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kicad/common/widgets/mathplot.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: mathplot.cpp
// Purpose: Framework for plotting in wxWindows
// Original Author: David Schalig
// Maintainer: Davide Rondini
// Contributors: Jose Luis Blanco, Val Greene, Maciej Suminski, Tomasz Wlostowski
// Created: 21/07/2003
// Last edit: 2024
// Copyright: (c) David Schalig, Davide Rondini
// Copyright (c) 2021-2024 KiCad Developers, see AUTHORS.txt for contributors.
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include <wx/window.h>
// Comment out for release operation:
// (Added by J.L.Blanco, Aug 2007)
//#define MATHPLOT_DO_LOGGING
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/object.h"
#include "wx/font.h"
#include "wx/colour.h"
#include "wx/sizer.h"
#include "wx/intl.h"
#include "wx/dcclient.h"
#include "wx/cursor.h"
#include "gal/cursors.h"
#endif
#include <widgets/mathplot.h>
#include <wx/graphics.h>
#include <wx/image.h>
#include <cmath>
#include <cstdio> // used only for debug
#include <ctime> // used for representation of x axes involving date
#include <set>
// Memory leak debugging
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// Legend margins
#define mpLEGEND_MARGIN 5
#define mpLEGEND_LINEWIDTH 10
// See doxygen comments.
double mpWindow::zoomIncrementalFactor = 1.1;
// -----------------------------------------------------------------------------
// mpLayer
// -----------------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS( mpLayer, wxObject )
mpLayer::mpLayer() :
m_type( mpLAYER_UNDEF )
{
SetPen( (wxPen&) *wxBLACK_PEN );
SetFont( (wxFont&) *wxNORMAL_FONT );
m_continuous = false; // Default
m_showName = true; // Default
m_visible = true;
}
// -----------------------------------------------------------------------------
// mpInfoLayer
// -----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS( mpInfoLayer, mpLayer )
mpInfoLayer::mpInfoLayer()
{
m_dim = wxRect( 0, 0, 1, 1 );
m_brush = *wxTRANSPARENT_BRUSH;
m_reference.x = 0; m_reference.y = 0;
m_winX = 1; // parent->GetScrX();
m_winY = 1; // parent->GetScrY();
m_type = mpLAYER_INFO;
}
mpInfoLayer::mpInfoLayer( wxRect rect, const wxBrush* brush ) :
m_dim( rect )
{
m_brush = *brush;
m_reference.x = rect.x;
m_reference.y = rect.y;
m_winX = 1; // parent->GetScrX();
m_winY = 1; // parent->GetScrY();
m_type = mpLAYER_INFO;
}
mpInfoLayer::~mpInfoLayer()
{
}
bool mpInfoLayer::Inside( const wxPoint& point ) const
{
return m_dim.Contains( point );
}
void mpInfoLayer::Move( wxPoint delta )
{
m_dim.SetX( m_reference.x + delta.x );
m_dim.SetY( m_reference.y + delta.y );
}
void mpInfoLayer::UpdateReference()
{
m_reference.x = m_dim.x;
m_reference.y = m_dim.y;
}
void mpInfoLayer::Plot( wxDC& dc, mpWindow& w )
{
if( m_visible )
{
// Adjust relative position inside the window
int scrx = w.GetScrX();
int scry = w.GetScrY();
// Avoid dividing by 0
if( scrx == 0 )
scrx = 1;
if( scry == 0 )
scry = 1;
if( (m_winX != scrx) || (m_winY != scry) )
{
if( m_winX > 1 )
m_dim.x = (int) floor( (double) (m_dim.x * scrx / m_winX) );
if( m_winY > 1 )
{
m_dim.y = (int) floor( (double) (m_dim.y * scry / m_winY) );
UpdateReference();
}
// Finally update window size
m_winX = scrx;
m_winY = scry;
}
dc.SetPen( m_pen );
dc.SetBrush( m_brush );
dc.DrawRectangle( m_dim.x, m_dim.y, m_dim.width, m_dim.height );
}
}
wxPoint mpInfoLayer::GetPosition() const
{
return m_dim.GetPosition();
}
wxSize mpInfoLayer::GetSize() const
{
return m_dim.GetSize();
}
mpInfoLegend::mpInfoLegend() :
mpInfoLayer()
{
}
mpInfoLegend::mpInfoLegend( wxRect rect, const wxBrush* brush ) :
mpInfoLayer( rect, brush )
{
}
mpInfoLegend::~mpInfoLegend()
{
}
void mpInfoLegend::Plot( wxDC& dc, mpWindow& w )
{
if( m_visible )
{
// Adjust relative position inside the window
int scrx = w.GetScrX();
int scry = w.GetScrY();
if( m_winX != scrx || m_winY != scry )
{
if( m_winX > 1 )
m_dim.x = (int) floor( (double) (m_dim.x * scrx / m_winX) );
if( m_winY > 1 )
{
m_dim.y = (int) floor( (double) (m_dim.y * scry / m_winY) );
UpdateReference();
}
// Finally update window size
m_winX = scrx;
m_winY = scry;
}
dc.SetBrush( m_brush );
dc.SetFont( m_font );
const int baseWidth = mpLEGEND_MARGIN * 2 + mpLEGEND_LINEWIDTH;
int textX = baseWidth, textY = mpLEGEND_MARGIN;
int plotCount = 0;
int posY = 0;
int tmpX = 0;
int tmpY = 0;
mpLayer* layer = nullptr;
wxPen lpen;
wxString label;
for( unsigned int p = 0; p < w.CountAllLayers(); p++ )
{
layer = w.GetLayer( p );
if( layer->GetLayerType() == mpLAYER_PLOT && layer->IsVisible() )
{
label = layer->GetDisplayName();
dc.GetTextExtent( label, &tmpX, &tmpY );
textX = ( textX > tmpX + baseWidth ) ? textX : tmpX + baseWidth + mpLEGEND_MARGIN;
textY += tmpY;
}
}
dc.SetPen( m_pen );
dc.SetBrush( m_brush );
m_dim.width = textX;
if( textY != mpLEGEND_MARGIN ) // Don't draw any thing if there are no visible layers
{
textY += mpLEGEND_MARGIN;
m_dim.height = textY;
dc.DrawRectangle( m_dim.x, m_dim.y, m_dim.width, m_dim.height );
for( unsigned int p2 = 0; p2 < w.CountAllLayers(); p2++ )
{
layer = w.GetLayer( p2 );
if( layer->GetLayerType() == mpLAYER_PLOT && layer->IsVisible() )
{
label = layer->GetDisplayName();
lpen = layer->GetPen();
dc.GetTextExtent( label, &tmpX, &tmpY );
dc.SetPen( lpen );
posY = m_dim.y + mpLEGEND_MARGIN + plotCount * tmpY + (tmpY >> 1);
dc.DrawLine( m_dim.x + mpLEGEND_MARGIN, // X start coord
posY, // Y start coord
m_dim.x + mpLEGEND_LINEWIDTH + mpLEGEND_MARGIN, // X end coord
posY );
dc.DrawText( label,
m_dim.x + baseWidth,
m_dim.y + mpLEGEND_MARGIN + plotCount * tmpY );
plotCount++;
}
}
}
}
}
// -----------------------------------------------------------------------------
// mpLayer implementations - functions
// -----------------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS( mpFX, mpLayer )
mpFX::mpFX( const wxString& name, int flags )
{
SetName( name );
m_flags = flags;
m_type = mpLAYER_PLOT;
}
void mpFX::Plot( wxDC& dc, mpWindow& w )
{
if( m_visible )
{
dc.SetPen( m_pen );
wxCoord startPx = w.GetMarginLeft();
wxCoord endPx = w.GetScrX() - w.GetMarginRight();
wxCoord minYpx = w.GetMarginTop();
wxCoord maxYpx = w.GetScrY() - w.GetMarginBottom();
wxCoord iy = 0;
if( m_pen.GetWidth() <= 1 )
{
for( wxCoord i = startPx; i < endPx; ++i )
{
iy = w.y2p( GetY( w.p2x( i ) ) );
// Draw the point only if you can draw outside margins or if the point is inside margins
if( (iy >= minYpx) && (iy <= maxYpx) )
dc.DrawPoint( i, iy );
}
}
else
{
for( wxCoord i = startPx; i < endPx; ++i )
{
iy = w.y2p( GetY( w.p2x( i ) ) );
// Draw the point only if you can draw outside margins or if the point is inside margins
if( iy >= minYpx && iy <= maxYpx )
dc.DrawLine( i, iy, i, iy );
}
}
if( !m_name.IsEmpty() && m_showName )
{
dc.SetFont( m_font );
wxCoord tx, ty;
dc.GetTextExtent( m_name, &tx, &ty );
if( (m_flags & mpALIGNMASK) == mpALIGN_RIGHT )
tx = (w.GetScrX() - tx) - w.GetMarginRight() - 8;
else if( (m_flags & mpALIGNMASK) == mpALIGN_CENTER )
tx = ( (w.GetScrX() - w.GetMarginRight() - w.GetMarginLeft() - tx) / 2 ) + w.GetMarginLeft();
else
tx = w.GetMarginLeft() + 8;
dc.DrawText( m_name, tx, w.y2p( GetY( w.p2x( tx ) ) ) );
}
}
}
IMPLEMENT_ABSTRACT_CLASS( mpFY, mpLayer )
mpFY::mpFY( const wxString& name, int flags )
{
SetName( name );
m_flags = flags;
m_type = mpLAYER_PLOT;
}
void mpFY::Plot( wxDC& dc, mpWindow& w )
{
if( m_visible )
{
dc.SetPen( m_pen );
wxCoord i, ix;
wxCoord startPx = w.GetMarginLeft();
wxCoord endPx = w.GetScrX() - w.GetMarginRight();
wxCoord minYpx = w.GetMarginTop();
wxCoord maxYpx = w.GetScrY() - w.GetMarginBottom();
if( m_pen.GetWidth() <= 1 )
{
for( i = minYpx; i < maxYpx; ++i )
{
ix = w.x2p( GetX( w.p2y( i ) ) );
if( (ix >= startPx) && (ix <= endPx) )
dc.DrawPoint( ix, i );
}
}
else
{
for( i = 0; i< w.GetScrY(); ++i )
{
ix = w.x2p( GetX( w.p2y( i ) ) );
if( (ix >= startPx) && (ix <= endPx) )
dc.DrawLine( ix, i, ix, i );
}
}
if( !m_name.IsEmpty() && m_showName )
{
dc.SetFont( m_font );
wxCoord tx, ty;
dc.GetTextExtent( m_name, &tx, &ty );
if( (m_flags & mpALIGNMASK) == mpALIGN_TOP )
ty = w.GetMarginTop() + 8;
else if( (m_flags & mpALIGNMASK) == mpALIGN_CENTER )
ty = ( ( w.GetScrY() - w.GetMarginTop() - w.GetMarginBottom() - ty) / 2 ) + w.GetMarginTop();
else
ty = w.GetScrY() - 8 - ty - w.GetMarginBottom();
dc.DrawText( m_name, w.x2p( GetX( w.p2y( ty ) ) ), ty );
}
}
}
IMPLEMENT_ABSTRACT_CLASS( mpFXY, mpLayer )
mpFXY::mpFXY( const wxString& name, int flags )
{
SetName( name );
m_flags = flags;
m_type = mpLAYER_PLOT;
m_scaleX = nullptr;
m_scaleY = nullptr;
// Avoid not initialized members:
maxDrawX = minDrawX = maxDrawY = minDrawY = 0;
}
void mpFXY::UpdateViewBoundary( wxCoord xnew, wxCoord ynew )
{
// Keep track of how many points have been drawn and the bounding box
maxDrawX = (xnew > maxDrawX) ? xnew : maxDrawX;
minDrawX = (xnew < minDrawX) ? xnew : minDrawX;
maxDrawY = (maxDrawY > ynew) ? maxDrawY : ynew;
minDrawY = (minDrawY < ynew) ? minDrawY : ynew;
// drawnPoints++;
}
void mpFXY::Plot( wxDC& dc, mpWindow& w )
{
// If trace doesn't have any data yet then it won't have any scale set. In any case, there's
// nothing to plot.
if( !GetCount() )
return;
wxCHECK_RET( m_scaleX, wxS( "X scale was not set" ) );
wxCHECK_RET( m_scaleY, wxS( "Y scale was not set" ) );
if( !m_visible )
return;
wxCoord startPx = w.GetMarginLeft();
wxCoord endPx = w.GetScrX() - w.GetMarginRight();
wxCoord minYpx = w.GetMarginTop();
wxCoord maxYpx = w.GetScrY() - w.GetMarginBottom();
// Check for a collapsed window before we try to allocate a negative number of points
if( endPx <= startPx || minYpx >= maxYpx )
return;
dc.SetPen( m_pen );
double x, y;
// Do this to reset the counters to evaluate bounding box for label positioning
Rewind();
GetNextXY( x, y );
maxDrawX = x;
minDrawX = x;
maxDrawY = y;
minDrawY = y;
// drawnPoints = 0;
Rewind();
dc.SetClippingRegion( startPx, minYpx, endPx - startPx + 1, maxYpx - minYpx + 1 );
if( !m_continuous )
{
bool first = true;
wxCoord ix = 0;
std::set<wxCoord> ys;
while( GetNextXY( x, y ) )
{
double px = m_scaleX->TransformToPlot( x );
double py = m_scaleY->TransformToPlot( y );
wxCoord newX = w.x2p( px );
if( first )
{
ix = newX;
first = false;
}
if( newX == ix ) // continue until a new X coordinate is reached
{
// collect all unique points
ys.insert( w.y2p( py ) );
continue;
}
for( auto& iy: ys )
{
if( (ix >= startPx) && (ix <= endPx) && (iy >= minYpx) && (iy <= maxYpx) )
{
// for some reason DrawPoint does not use the current pen, so we use
// DrawLine for fat pens
if( m_pen.GetWidth() <= 1 )
dc.DrawPoint( ix, iy );
else
dc.DrawLine( ix, iy, ix, iy );
UpdateViewBoundary( ix, iy );
}
}
ys.clear();
ix = newX;
ys.insert( w.y2p( py ) );
}
}
else
{
int count = 0;
int x0 = 0; // X position of merged current vertical line
int ymin0 = 0; // y min coord of merged current vertical line
int ymax0 = 0; // y max coord of merged current vertical line
int dupx0 = 0; // count of currently merged vertical lines
wxPoint line_start; // starting point of the current line to draw
// A buffer to store coordinates of lines to draw
std::vector<wxPoint>pointList;
pointList.reserve( ( endPx - startPx ) * 2 );
double nextX;
double nextY;
bool hasNext = GetNextXY( nextX, nextY );
bool offRight = false;
// Note: we can use dc.DrawLines() only for a reasonable number or points (<10,000),
// because at least on Windows dc.DrawLines() can hang for a lot of points. Note that
// this includes the intermediate points when drawing dotted lines.
// Our first-pass optimization is to exclude points outside the view, and aggregate all
// contiguous y values found at a single x value into a vertical line.
while( hasNext )
{
x = nextX;
y = nextY;
hasNext = GetNextXY( nextX, nextY );
double px = m_scaleX->TransformToPlot( x );
double py = m_scaleY->TransformToPlot( y );
wxCoord x1 = w.x2p( px );
wxCoord y1 = w.y2p( py );
// Note that we can't start *right* at the edge of the view because we need to
// interpolate between two points, one of which might be outside the view.
// Note: x1 is a value truncated from px by w.x2p(). So to be sure the first point
// is drawn, the x1 low limit is startPx-1 in plot coordinates
if( x1 < startPx-1 )
{
wxCoord nextX1 = w.x2p( m_scaleX->TransformToPlot( nextX ) );
if( nextX1 < startPx-1 )
continue;
}
else if( x1 > endPx )
{
if( offRight )
continue;
else
offRight = true;
}
if( !count || line_start.x != x1 )
{
// We've aggregated a bunch of y values with a shared x value, so we need to draw
// a vertical line. However, short vertical segments spoil anti-aliasing on
// Retina displays, so only draw them if they're "significant" (the user should
// zoom in if they need a more accurate picture).
if( count && dupx0 > 1 && abs( ymax0 - ymin0 ) > 2 )
dc.DrawLine( x0, ymin0, x0, ymax0 );
x0 = x1;
ymin0 = ymax0 = y1;
dupx0 = 0;
pointList.emplace_back( wxPoint( x1, y1 ) );
line_start.x = x1;
line_start.y = y1;
count++;
}
else
{
ymin0 = std::min( ymin0, y1 );
ymax0 = std::max( ymax0, y1 );
x0 = x1;
dupx0++;
}
}
if( pointList.size() > 1 )
{
// Second pass optimization is to merge horizontal segments. This improves the look
// of dotted lines, keeps the point count down, and it's easy.
//
// This pass also includes a final protection to keep MSW from hanging by chunking to
// a size it can handle.
std::vector<wxPoint> drawPoints;
drawPoints.reserve( ( endPx - startPx ) * 2 );
#ifdef __WXMSW__
int chunkSize = 10000;
#else
int chunkSize = 100000;
#endif
if( dc.GetPen().GetStyle() == wxPENSTYLE_DOT )
chunkSize /= 500;
drawPoints.push_back( pointList[0] ); // push the first point in list
for( size_t ii = 1; ii < pointList.size()-1; ii++ )
{
// Skip intermediate points between the first point and the last point of the
// segment candidate
if( drawPoints.back().y == pointList[ii].y &&
drawPoints.back().y == pointList[ii+1].y )
{
continue;
}
else
{
drawPoints.push_back( pointList[ii] );
if( (int) drawPoints.size() > chunkSize )
{
dc.DrawLines( (int) drawPoints.size(), &drawPoints[0] );
drawPoints.clear();
// Restart the line with the current point
drawPoints.push_back( pointList[ii] );
}
}
}
// push the last point to draw in list
if( drawPoints.back() != pointList.back() )
drawPoints.push_back( pointList.back() );
dc.DrawLines( (int) drawPoints.size(), &drawPoints[0] );
}
}
if( !m_name.IsEmpty() && m_showName )
{
dc.SetFont( m_font );
wxCoord tx, ty;
dc.GetTextExtent( m_name, &tx, &ty );
if( (m_flags & mpALIGNMASK) == mpALIGN_NW )
{
tx = minDrawX + 8;
ty = maxDrawY + 8;
}
else if( (m_flags & mpALIGNMASK) == mpALIGN_NE )
{
tx = maxDrawX - tx - 8;
ty = maxDrawY + 8;
}
else if( (m_flags & mpALIGNMASK) == mpALIGN_SE )
{
tx = maxDrawX - tx - 8;
ty = minDrawY - ty - 8;
}
else
{
// mpALIGN_SW
tx = minDrawX + 8;
ty = minDrawY - ty - 8;
}
dc.DrawText( m_name, tx, ty );
}
dc.DestroyClippingRegion();
}
// -----------------------------------------------------------------------------
// mpLayer implementations - furniture (scales, ...)
// -----------------------------------------------------------------------------
#define mpLN10 2.3025850929940456840179914546844
void mpScaleX::recalculateTicks( wxDC& dc, mpWindow& w )
{
double minV, maxV, minVvis, maxVvis;
GetDataRange( minV, maxV );
getVisibleDataRange( w, minVvis, maxVvis );
m_absVisibleMaxV = std::max( std::abs( minVvis ), std::abs( maxVvis ) );
m_tickValues.clear();
m_tickLabels.clear();
double minErr = 1000000000000.0;
double bestStep = 1.0;
int m_scrX = w.GetXScreen();
for( int i = 10; i <= 20; i += 2 )
{
double curr_step = fabs( maxVvis - minVvis ) / (double) i;
double base = pow( 10, floor( log10( curr_step ) ) );
double stepInt = floor( curr_step / base ) * base;
double err = fabs( curr_step - stepInt );
if( err < minErr )
{
minErr = err;
bestStep = stepInt;
}
}
double numberSteps = floor( ( maxVvis - minVvis ) / bestStep );
// Half the number of ticks according to window size.
// The value 96 is used to have only 4 ticks when m_scrX is 268.
// For each 96 device context units, is possible to add a new tick.
while( numberSteps - 2.0 >= m_scrX/96.0 )
{
bestStep *= 2;
numberSteps = floor( ( maxVvis - minVvis ) / bestStep );
}
double v = floor( minVvis / bestStep ) * bestStep;
double zeroOffset = 100000000.0;
while( v < maxVvis )
{
m_tickValues.push_back( v );
if( fabs( v ) < zeroOffset )
zeroOffset = fabs( v );
v += bestStep;
}
if( zeroOffset <= bestStep )
{
for( double& t : m_tickValues )
t -= zeroOffset;
}
for( double t : m_tickValues )
m_tickLabels.emplace_back( t );
updateTickLabels( dc, w );
}
mpScaleBase::mpScaleBase()
{
m_rangeSet = false;
m_axisLocked = false;
m_axisMin = 0;
m_axisMax = 0;
m_nameFlags = mpALIGN_BORDER_BOTTOM;
// initialize these members mainly to avoid not initialized values
m_offset = 0.0;
m_scale = 1.0;
m_absVisibleMaxV = 0.0;
m_flags = 0; // Flag for axis alignment
m_ticks = true; // Flag to toggle between ticks or grid
m_minV = 0.0;
m_maxV = 0.0;
m_maxLabelHeight = 1;
m_maxLabelWidth = 1;
}
void mpScaleBase::computeLabelExtents( wxDC& dc, mpWindow& w )
{
m_maxLabelHeight = 0;
m_maxLabelWidth = 0;
for( const TICK_LABEL& tickLabel : m_tickLabels )
{
int tx, ty;
const wxString s = tickLabel.label;
dc.GetTextExtent( s, &tx, &ty );
m_maxLabelHeight = std::max( ty, m_maxLabelHeight );
m_maxLabelWidth = std::max( tx, m_maxLabelWidth );
}
}
void mpScaleBase::updateTickLabels( wxDC& dc, mpWindow& w )
{
formatLabels();
computeLabelExtents( dc, w );
}
void mpScaleY::getVisibleDataRange( mpWindow& w, double& minV, double& maxV )
{
wxCoord minYpx = w.GetMarginTop();
wxCoord maxYpx = w.GetScrY() - w.GetMarginBottom();
double pymin = w.p2y( minYpx );
double pymax = w.p2y( maxYpx );
minV = TransformFromPlot( pymax );
maxV = TransformFromPlot( pymin );
}
void mpScaleY::computeSlaveTicks( mpWindow& w )
{
// No need for slave ticks when there aren't 2 main ticks for them to go between
if( m_masterScale->m_tickValues.size() < 2 )
return;
m_tickValues.clear();
m_tickLabels.clear();
double p0 = m_masterScale->TransformToPlot( m_masterScale->m_tickValues[0] );
double p1 = m_masterScale->TransformToPlot( m_masterScale->m_tickValues[1] );
m_scale = 1.0 / ( m_maxV - m_minV );
m_offset = -m_minV;
double y_slave0 = p0 / m_scale;
double y_slave1 = p1 / m_scale;
double dy_slave = (y_slave1 - y_slave0);
double exponent = floor( log10( dy_slave ) );
double base = dy_slave / pow( 10.0, exponent );
double dy_scaled = ceil( 2.0 * base ) / 2.0 * pow( 10.0, exponent );
double minvv, maxvv;
getVisibleDataRange( w, minvv, maxvv );
minvv = floor( minvv / dy_scaled ) * dy_scaled;
m_scale = 1.0 / ( m_maxV - m_minV );
m_scale *= dy_slave / dy_scaled;
m_offset = p0 / m_scale - minvv;
m_tickValues.clear();
m_absVisibleMaxV = 0;
for( double tickValue : m_masterScale->m_tickValues )
{
double m = TransformFromPlot( m_masterScale->TransformToPlot( tickValue ) );
m_tickValues.push_back( m );
m_tickLabels.emplace_back( m );
m_absVisibleMaxV = std::max( m_absVisibleMaxV, fabs( m ) );
}
}
void mpScaleY::recalculateTicks( wxDC& dc, mpWindow& w )
{
double minVvis, maxVvis;
if( m_axisLocked )
{
minVvis = m_axisMin;
maxVvis = m_axisMax;
m_offset = -m_axisMin;
m_scale = 1.0 / ( m_axisMax - m_axisMin );
}
else if( m_masterScale )
{
computeSlaveTicks( w );
updateTickLabels( dc, w );
return;
}
else
{
getVisibleDataRange( w, minVvis, maxVvis );
}
m_absVisibleMaxV = std::max( std::abs( minVvis ), std::abs( maxVvis ) );
m_tickValues.clear();
m_tickLabels.clear();
double minErr = 1000000000000.0;
double bestStep = 1.0;
int m_scrY = w.GetYScreen();
for( int i = 10; i <= 20; i += 2 )
{
double curr_step = fabs( maxVvis - minVvis ) / (double) i;
double base = pow( 10, floor( log10( curr_step ) ) );
double stepInt = floor( curr_step / base ) * base;
double err = fabs( curr_step - stepInt );
if( err< minErr )
{
minErr = err;
bestStep = stepInt;
}
}
double numberSteps = floor( ( maxVvis - minVvis ) / bestStep );
// Half the number of ticks according to window size.
// For each 32 device context units, is possible to add a new tick.
while( numberSteps >= m_scrY/32.0 )
{
bestStep *= 2;
numberSteps = floor( ( maxVvis - minVvis ) / bestStep );
}
double v = floor( minVvis / bestStep ) * bestStep;
double zeroOffset = 100000000.0;
const int iterLimit = 1000;
int i = 0;
while( v <= maxVvis && i < iterLimit )
{
m_tickValues.push_back( v );
if( fabs( v ) < zeroOffset )
zeroOffset = fabs( v );
v += bestStep;
i++;
}
// something weird happened...
if( i == iterLimit )
m_tickValues.clear();
if( zeroOffset <= bestStep )
{
for( double& t : m_tickValues )
t -= zeroOffset;
}
for( double t : m_tickValues )
m_tickLabels.emplace_back( t );
updateTickLabels( dc, w );
}
void mpScaleXBase::getVisibleDataRange( mpWindow& w, double& minV, double& maxV )
{
wxCoord startPx = w.GetMarginLeft();
wxCoord endPx = w.GetScrX() - w.GetMarginRight();
double pxmin = w.p2x( startPx );
double pxmax = w.p2x( endPx );
minV = TransformFromPlot( pxmin );
maxV = TransformFromPlot( pxmax );
}
void mpScaleXLog::recalculateTicks( wxDC& dc, mpWindow& w )
{
double minV, maxV, minVvis, maxVvis;
GetDataRange( minV, maxV );
getVisibleDataRange( w, minVvis, maxVvis );
// double decades = log( maxV / minV ) / log(10);
double minDecade = pow( 10, floor( log10( minV ) ) );
double maxDecade = pow( 10, ceil( log10( maxV ) ) );
double visibleDecades = log( maxVvis / minVvis ) / log( 10 );
double step = 10.0;
int m_scrX = w.GetXScreen();
double d;
m_tickValues.clear();
m_tickLabels.clear();
if( minDecade == 0.0 )
return;
// Half the number of ticks according to window size.
// The value 96 is used to have only 4 ticks when m_scrX is 268.
// For each 96 device context units, is possible to add a new tick.
while( visibleDecades - 2 >= m_scrX / 96.0 )
{
step *= 10.0;
visibleDecades = log( maxVvis / minVvis ) / log( step );
}
for( d = minDecade; d<=maxDecade; d *= step )
{
m_tickLabels.emplace_back( d );
for( double dd = d; dd < d * step; dd += d )
{
if( visibleDecades < 2 )
m_tickLabels.emplace_back( dd );
m_tickValues.push_back( dd );
}
}
updateTickLabels( dc, w );
}
IMPLEMENT_ABSTRACT_CLASS( mpScaleXBase, mpLayer )
IMPLEMENT_DYNAMIC_CLASS( mpScaleX, mpScaleXBase )
IMPLEMENT_DYNAMIC_CLASS( mpScaleXLog, mpScaleXBase )
mpScaleXBase::mpScaleXBase( const wxString& name, int flags, bool ticks, unsigned int type )
{
SetName( name );
SetFont( (wxFont&) *wxSMALL_FONT );
SetPen( (wxPen&) *wxGREY_PEN );
m_flags = flags;
m_ticks = ticks;
m_type = mpLAYER_AXIS;
}
mpScaleX::mpScaleX( const wxString& name, int flags, bool ticks, unsigned int type ) :
mpScaleXBase( name, flags, ticks, type )
{
}
mpScaleXLog::mpScaleXLog( const wxString& name, int flags, bool ticks, unsigned int type ) :
mpScaleXBase( name, flags, ticks, type )
{
}
void mpScaleXBase::Plot( wxDC& dc, mpWindow& w )
{
int tx, ty;
m_offset = -m_minV;
m_scale = 1.0 / ( m_maxV - m_minV );
recalculateTicks( dc, w );
if( m_visible )
{
dc.SetPen( m_pen );
dc.SetFont( m_font );
int orgy = 0;
const int extend = w.GetScrX(); ///2;
if( m_flags == mpALIGN_CENTER )
orgy = w.y2p( 0 );
if( m_flags == mpALIGN_TOP )
orgy = w.GetMarginTop();
if( m_flags == mpALIGN_BOTTOM )
orgy = w.GetScrY() - w.GetMarginBottom();
if( m_flags == mpALIGN_BORDER_BOTTOM )
orgy = w.GetScrY() - 1;
if( m_flags == mpALIGN_BORDER_TOP )
orgy = 1;
wxCoord startPx = w.GetMarginLeft();
wxCoord endPx = w.GetScrX() - w.GetMarginRight();
wxCoord minYpx = w.GetMarginTop();
wxCoord maxYpx = w.GetScrY() - w.GetMarginBottom();
// int tmp=-65535;
int labelH = m_maxLabelHeight; // Control labels height to decide where to put axis name (below labels or on top of axis)
// int maxExtent = tc.MaxLabelWidth();
for( double tp : m_tickValues )
{
double px = TransformToPlot( tp );
const int p = (int) ( ( px - w.GetPosX() ) * w.GetScaleX() );
if( p >= startPx && p <= endPx )
{
if( m_ticks ) // draw axis ticks
{
if( m_flags == mpALIGN_BORDER_BOTTOM )
dc.DrawLine( p, orgy, p, orgy - 4 );
else
dc.DrawLine( p, orgy, p, orgy + 4 );
}
else // draw grid dotted lines
{
m_pen.SetStyle( wxPENSTYLE_DOT );
dc.SetPen( m_pen );
if( m_flags == mpALIGN_BOTTOM )
{
m_pen.SetStyle( wxPENSTYLE_DOT );
dc.SetPen( m_pen );
dc.DrawLine( p, orgy + 4, p, minYpx );
m_pen.SetStyle( wxPENSTYLE_SOLID );
dc.SetPen( m_pen );
dc.DrawLine( p, orgy + 4, p, orgy - 4 );
}
else
{
if( m_flags == mpALIGN_TOP )
dc.DrawLine( p, orgy - 4, p, maxYpx );
else
dc.DrawLine( p, minYpx, p, maxYpx );
}
m_pen.SetStyle( wxPENSTYLE_SOLID );
dc.SetPen( m_pen );
}
}
}
m_pen.SetStyle( wxPENSTYLE_SOLID );
dc.SetPen( m_pen );
dc.DrawLine( startPx, minYpx, endPx, minYpx );
dc.DrawLine( startPx, maxYpx, endPx, maxYpx );
// Actually draw labels, taking care of not overlapping them, and distributing them
// regularly
for( const TICK_LABEL& tickLabel : m_tickLabels )
{
if( !tickLabel.visible )
continue;
double px = TransformToPlot( tickLabel.pos );
const int p = (int) ( ( px - w.GetPosX() ) * w.GetScaleX() );
if( (p >= startPx) && (p <= endPx) )
{
// Write ticks labels in s string
wxString s = tickLabel.label;
dc.GetTextExtent( s, &tx, &ty );
if( (m_flags == mpALIGN_BORDER_BOTTOM) || (m_flags == mpALIGN_TOP) )
dc.DrawText( s, p - tx / 2, orgy - 4 - ty );
else
dc.DrawText( s, p - tx / 2, orgy + 4 );
}
}
// Draw axis name
dc.GetTextExtent( m_name, &tx, &ty );
switch( m_nameFlags )
{
case mpALIGN_BORDER_BOTTOM:
dc.DrawText( m_name, extend - tx - 4, orgy - 8 - ty - labelH );
break;
case mpALIGN_BOTTOM:
dc.DrawText( m_name, (endPx + startPx) / 2 - tx / 2, orgy + 6 + labelH );
break;
case mpALIGN_CENTER:
dc.DrawText( m_name, extend - tx - 4, orgy - 4 - ty );
break;
case mpALIGN_TOP:
if( w.GetMarginTop() > (ty + labelH + 8) )
dc.DrawText( m_name, (endPx - startPx - tx) >> 1, orgy - 6 - ty - labelH );
else
dc.DrawText( m_name, extend - tx - 4, orgy + 4 );
break;
case mpALIGN_BORDER_TOP:
dc.DrawText( m_name, extend - tx - 4, orgy + 6 + labelH );
break;
default:
break;
}
}
}
IMPLEMENT_DYNAMIC_CLASS( mpScaleY, mpLayer )
mpScaleY::mpScaleY( const wxString& name, int flags, bool ticks )
{
SetName( name );
SetFont( (wxFont&) *wxSMALL_FONT );
SetPen( (wxPen&) *wxGREY_PEN );
m_flags = flags;
m_ticks = ticks;
m_type = mpLAYER_AXIS;
m_masterScale = nullptr;
m_nameFlags = mpALIGN_BORDER_LEFT;
}
void mpScaleY::Plot( wxDC& dc, mpWindow& w )
{
m_offset = -m_minV;
m_scale = 1.0 / ( m_maxV - m_minV );
recalculateTicks( dc, w );
if( m_visible )
{
dc.SetPen( m_pen );
dc.SetFont( m_font );
int orgx = 0;
if( m_flags == mpALIGN_CENTER )
orgx = w.x2p( 0 );
if( m_flags == mpALIGN_LEFT )
orgx = w.GetMarginLeft();
if( m_flags == mpALIGN_RIGHT )
orgx = w.GetScrX() - w.GetMarginRight();
if( m_flags == mpALIGN_FAR_RIGHT )
orgx = w.GetScrX() - ( w.GetMarginRight() / 2 );
if( m_flags == mpALIGN_BORDER_RIGHT )
orgx = w.GetScrX() - 1;
if( m_flags == mpALIGN_BORDER_LEFT )
orgx = 1;
wxCoord endPx = w.GetScrX() - w.GetMarginRight();
wxCoord minYpx = w.GetMarginTop();
wxCoord maxYpx = w.GetScrY() - w.GetMarginBottom();
// Draw line
dc.DrawLine( orgx, minYpx, orgx, maxYpx );
wxCoord tx, ty;
wxString s;
wxString fmt;
int labelW = 0;
// Before staring cycle, calculate label height
int labelHeight = 0;
s.Printf( fmt, 0 );
dc.GetTextExtent( s, &tx, &labelHeight );
for( double tp : m_tickValues )
{
double py = TransformToPlot( tp );
const int p = (int) ( ( w.GetPosY() - py ) * w.GetScaleY() );
if( p >= minYpx && p <= maxYpx )
{
if( m_ticks ) // Draw axis ticks
{
if( m_flags == mpALIGN_BORDER_LEFT )
dc.DrawLine( orgx, p, orgx + 4, p );
else
dc.DrawLine( orgx - 4, p, orgx, p );
}
else
{
dc.DrawLine( orgx - 4, p, orgx + 4, p );
m_pen.SetStyle( wxPENSTYLE_DOT );
dc.SetPen( m_pen );
dc.DrawLine( orgx - 4, p, endPx, p );
m_pen.SetStyle( wxPENSTYLE_SOLID );
dc.SetPen( m_pen );
}
// Print ticks labels
}
}
for( const TICK_LABEL& tickLabel : m_tickLabels )
{
double py = TransformToPlot( tickLabel.pos );
const int p = (int) ( ( w.GetPosY() - py ) * w.GetScaleY() );
if( !tickLabel.visible )
continue;
if( p >= minYpx && p <= maxYpx )
{
s = tickLabel.label;
dc.GetTextExtent( s, &tx, &ty );
if( m_flags == mpALIGN_BORDER_LEFT || m_flags == mpALIGN_RIGHT || m_flags == mpALIGN_FAR_RIGHT )
dc.DrawText( s, orgx + 4, p - ty / 2 );
else
dc.DrawText( s, orgx - 4 - tx, p - ty / 2 ); // ( s, orgx+4, p-ty/2);
}
}
// Draw axis name
dc.GetTextExtent( m_name, &tx, &ty );
switch( m_nameFlags )
{
case mpALIGN_BORDER_LEFT:
dc.DrawText( m_name, labelW + 8, 4 );
break;
case mpALIGN_LEFT:
dc.DrawText( m_name, orgx - ( tx / 2 ), minYpx - ty - 4 );
break;
case mpALIGN_CENTER:
dc.DrawText( m_name, orgx + 4, 4 );
break;
case mpALIGN_RIGHT:
case mpALIGN_FAR_RIGHT:
dc.DrawText( m_name, orgx - ( tx / 2 ), minYpx - ty - 4 );
break;
case mpALIGN_BORDER_RIGHT:
dc.DrawText( m_name, orgx - 6 - tx - labelW, 4 );
break;
default:
break;
}
}
}
// -----------------------------------------------------------------------------
// mpWindow
// -----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS( mpWindow, wxWindow )
BEGIN_EVENT_TABLE( mpWindow, wxWindow )
EVT_PAINT( mpWindow::OnPaint )
EVT_SIZE( mpWindow::OnSize )
EVT_MIDDLE_DOWN( mpWindow::OnMouseMiddleDown ) // JLB
EVT_RIGHT_UP( mpWindow::OnShowPopupMenu )
EVT_MOUSEWHEEL( mpWindow::onMouseWheel ) // JLB
EVT_MAGNIFY( mpWindow::onMagnify )
EVT_MOTION( mpWindow::onMouseMove ) // JLB
EVT_LEFT_DOWN( mpWindow::onMouseLeftDown )
EVT_LEFT_UP( mpWindow::onMouseLeftRelease )
EVT_MENU( mpID_CENTER, mpWindow::OnCenter )
EVT_MENU( mpID_FIT, mpWindow::OnFit )
EVT_MENU( mpID_ZOOM_IN, mpWindow::onZoomIn )
EVT_MENU( mpID_ZOOM_OUT, mpWindow::onZoomOut )
EVT_MENU( mpID_ZOOM_UNDO, mpWindow::onZoomUndo )
EVT_MENU( mpID_ZOOM_REDO, mpWindow::onZoomRedo )
END_EVENT_TABLE()
mpWindow::mpWindow() : mpWindow( DelegatingContructorTag() )
{
initializeGraphicsContext();
}
mpWindow::mpWindow( wxWindow* parent, wxWindowID id ) :
mpWindow( DelegatingContructorTag(), parent, id, wxDefaultPosition, wxDefaultSize, 0,
wxT( "mathplot" ) )
{
m_popmenu.Append( mpID_ZOOM_UNDO, _( "Undo Last Zoom" ), _( "Return zoom to level prior to last zoom action" ) );
m_popmenu.Append( mpID_ZOOM_REDO, _( "Redo Last Zoom" ), _( "Return zoom to level prior to last zoom undo" ) );
m_popmenu.AppendSeparator();
m_popmenu.Append( mpID_ZOOM_IN, _( "Zoom In" ), _( "Zoom in plot view." ) );
m_popmenu.Append( mpID_ZOOM_OUT, _( "Zoom Out" ), _( "Zoom out plot view." ) );
m_popmenu.Append( mpID_CENTER, _( "Center on Cursor" ), _( "Center plot view to this position" ) );
m_popmenu.Append( mpID_FIT, _( "Fit on Screen" ), _( "Set plot view to show all items" ) );
m_layers.clear();
SetBackgroundColour( *wxWHITE );
m_bgColour = *wxWHITE;
m_fgColour = *wxBLACK;
SetSizeHints( 128, 128 );
// J.L.Blanco: Eliminates the "flick" with the double buffer.
SetBackgroundStyle( wxBG_STYLE_CUSTOM );
initializeGraphicsContext();
UpdateAll();
}
mpWindow::~mpWindow()
{
// Free all the layers:
DelAllLayers( true, false );
delete m_buff_bmp;
m_buff_bmp = nullptr;
}
// Mouse handler, for detecting when the user drag with the right button or just "clicks" for the menu
// JLB
void mpWindow::OnMouseMiddleDown( wxMouseEvent& event )
{
m_mouseMClick.x = event.GetX();
m_mouseMClick.y = event.GetY();
}
void mpWindow::onMagnify( wxMouseEvent& event )
{
if( !m_enableMouseNavigation )
{
event.Skip();
return;
}
float zoom = event.GetMagnification() + 1.0f;
wxPoint pos( event.GetX(), event.GetY() );
if( zoom > 1.0f )
ZoomIn( pos, zoom );
else if( zoom < 1.0f )
ZoomOut( pos, 1.0f / zoom );
}
// Process mouse wheel events
// JLB
void mpWindow::onMouseWheel( wxMouseEvent& event )
{
if( !m_enableMouseNavigation )
{
event.Skip();
return;
}
const wxMouseWheelAxis axis = event.GetWheelAxis();
const int modifiers = event.GetModifiers();
MouseWheelAction action = MouseWheelAction::NONE;
if( axis == wxMOUSE_WHEEL_HORIZONTAL )
{
action = m_mouseWheelActions.horizontal;
}
else if( modifiers == wxMOD_NONE )
{
action = m_mouseWheelActions.verticalUnmodified;
}
else if( modifiers == wxMOD_CONTROL )
{
action = m_mouseWheelActions.verticalWithCtrl;
}
else if( modifiers == wxMOD_SHIFT )
{
action = m_mouseWheelActions.verticalWithShift;
}
else if( modifiers == wxMOD_ALT )
{
action = m_mouseWheelActions.verticalWithAlt;
}
else
{
event.Skip();
return;
}
PerformMouseWheelAction( event, action );
}
// If the user "drags" with the right button pressed, do "pan"
// JLB
void mpWindow::onMouseMove( wxMouseEvent& event )
{
if( !m_enableMouseNavigation )
{
event.Skip();
return;
}
wxCursor cursor = wxCURSOR_MAGNIFIER;
if( event.m_middleDown )
{
cursor = wxCURSOR_ARROW;
// The change:
int Ax = m_mouseMClick.x - event.GetX();
int Ay = m_mouseMClick.y - event.GetY();
// For the next event, use relative to this coordinates.
m_mouseMClick.x = event.GetX();
m_mouseMClick.y = event.GetY();
if( Ax )
{
double Ax_units = Ax / m_scaleX;
SetXView( m_posX + Ax_units, m_desiredXmax + Ax_units, m_desiredXmin + Ax_units );
}
if( Ay )
{
double Ay_units = -Ay / m_scaleY;
SetYView( m_posY + Ay_units, m_desiredYmax + Ay_units, m_desiredYmin + Ay_units );
}
if( Ax || Ay )
UpdateAll();
}
else if( event.m_leftDown )
{
if( m_movingInfoLayer )
{
if( dynamic_cast<mpInfoLegend*>( m_movingInfoLayer ) )
cursor = wxCURSOR_SIZING;
else
cursor = wxCURSOR_SIZEWE;
wxPoint moveVector( event.GetX() - m_mouseLClick.x, event.GetY() - m_mouseLClick.y );
m_movingInfoLayer->Move( moveVector );
m_zooming = false;
}
else
{
cursor = wxCURSOR_MAGNIFIER;
wxClientDC dc( this );
wxPen pen( m_fgColour, 1, wxPENSTYLE_DOT );
dc.SetPen( pen );
dc.SetBrush( *wxTRANSPARENT_BRUSH );
dc.DrawRectangle( m_mouseLClick.x, m_mouseLClick.y,
event.GetX() - m_mouseLClick.x, event.GetY() - m_mouseLClick.y );
m_zooming = true;
m_zoomRect.x = m_mouseLClick.x;
m_zoomRect.y = m_mouseLClick.y;
m_zoomRect.width = event.GetX() - m_mouseLClick.x;
m_zoomRect.height = event.GetY() - m_mouseLClick.y;
}
UpdateAll();
}
else
{
for( mpLayer* layer : m_layers)
{
if( layer->IsInfo() && layer->IsVisible() )
{
mpInfoLayer* infoLayer = (mpInfoLayer*) layer;
if( infoLayer->Inside( event.GetPosition() ) )
{
if( dynamic_cast<mpInfoLegend*>( infoLayer ) )
cursor = wxCURSOR_SIZING;
else
cursor = wxCURSOR_SIZEWE;
}
}
}
}
SetCursor( cursor );
event.Skip();
}
void mpWindow::onMouseLeftDown( wxMouseEvent& event )
{
m_mouseLClick.x = event.GetX();
m_mouseLClick.y = event.GetY();
m_zooming = true;
wxPoint pointClicked = event.GetPosition();
m_movingInfoLayer = IsInsideInfoLayer( pointClicked );
event.Skip();
}
void mpWindow::onMouseLeftRelease( wxMouseEvent& event )
{
wxPoint release( event.GetX(), event.GetY() );
wxPoint press( m_mouseLClick.x, m_mouseLClick.y );
m_zooming = false;
if( m_movingInfoLayer != nullptr )
{
m_movingInfoLayer->UpdateReference();
m_movingInfoLayer = nullptr;
}
else
{
if( release != press )
ZoomRect( press, release );
}
event.Skip();
}
void mpWindow::Fit()
{
if( UpdateBBox() )
Fit( m_minX, m_maxX, m_minY, m_maxY );
}
// JL
void mpWindow::Fit( double xMin, double xMax, double yMin, double yMax, const wxCoord* printSizeX,
const wxCoord* printSizeY, wxOrientation directions )
{
const bool isPrinting = printSizeX != nullptr && printSizeY != nullptr;
// Save desired borders:
double newDesiredXmin = xMin;
double newDesiredXmax = xMax;
double newDesiredYmin = yMin;
double newDesiredYmax = yMax;
// Provide a gap between the extrema of the curve and the top/bottom edges of the
// plot area. Not to be confused with the left/right/top/bottom margins outside the plot area.
const double xGap = fabs( xMax - xMin ) * m_leftRightPlotGapFactor;
const double yGap = fabs( yMax - yMin ) * m_topBottomPlotGapFactor;
xMin -= xGap;
xMax += xGap;
yMin -= yGap;
yMax += yGap;
int newScrX = m_scrX;
int newScrY = m_scrY;
if( isPrinting )
{
// Printer:
newScrX = *printSizeX;
newScrY = *printSizeY;
}
else
{
// Normal case (screen):
GetClientSize( &newScrX, &newScrY );
}
// Compute the width/height in pixels for the plot area.
const int plotScreenWidth = newScrX - m_marginLeft - m_marginRight;
const int plotScreenHeight = newScrY - m_marginTop - m_marginBottom;
// Adjust scale so that desired X/Y span plus extra gap fits in the plot area
double desiredSpanX = xMax - xMin;
double desiredSpanY = yMax - yMin;
double newScaleX = ( desiredSpanX != 0 ) ? double( plotScreenWidth ) / desiredSpanX : 1;
double newScaleY = ( desiredSpanY != 0 ) ? double( plotScreenHeight ) / desiredSpanY : 1;
// Adjust corner coordinates:
// Upstream's aspect lock code has been removed, so no need to account for centering.
double newPosX = xMin - ( m_marginLeft / newScaleX );
double newPosY = yMax + ( m_marginTop / newScaleY );
// Commit above changes to member variables only if enabled for their respective dimension.
if( ( ( directions & wxHORIZONTAL ) != 0 ) || isPrinting )
{
// Don't commit the passed desired bounds when printing
if( !isPrinting )
{
m_desiredXmin = newDesiredXmin;
m_desiredXmax = newDesiredXmax;
}
m_scrX = newScrX;
m_scaleX = newScaleX;
m_posX = newPosX;
}
if( ( ( directions & wxVERTICAL ) != 0 ) || isPrinting )
{
// Don't commit the passed desired bounds when printing
if( !isPrinting )
{
m_desiredYmin = newDesiredYmin;
m_desiredYmax = newDesiredYmax;
}
m_scrY = newScrY;
m_scaleY = newScaleY;
m_posY = newPosY;
}
// It is VERY IMPORTANT to NOT call Refresh if we are drawing to the printer!!
// Otherwise, the DC dimensions will be those of the window instead of the printer device
// The caller wanting to print should perform another Fit() afterwards to restore this
// object's state.
if( !isPrinting )
UpdateAll();
}
void mpWindow::AdjustLimitedView( wxOrientation directions )
{
if( !m_enableLimitedView )
return;
// The m_desired* members are expressed in plot coordinates.
// They should be clamped against their respective m_minX, m_maxX, m_minY, m_maxY limits.
if( ( directions & wxHORIZONTAL ) != 0 )
{
if( m_desiredXmin < m_minX )
{
double diff = m_minX - m_desiredXmin;
m_posX += diff;
m_desiredXmax += diff;
m_desiredXmin = m_minX;
}
if( m_desiredXmax > m_maxX )
{
double diff = m_desiredXmax - m_maxX;
m_posX -= diff;
m_desiredXmin -= diff;
m_desiredXmax = m_maxX;
}
}
if( ( directions & wxVERTICAL ) != 0 )
{
if( m_desiredYmin < m_minY )
{
double diff = m_minY - m_desiredYmin;
m_posY += diff;
m_desiredYmax += diff;
m_desiredYmin = m_minY;
}
if( m_desiredYmax > m_maxY )
{
double diff = m_desiredYmax - m_maxY;
m_posY -= diff;
m_desiredYmin -= diff;
m_desiredYmax = m_maxY;
}
}
}
bool mpWindow::SetXView( double pos, double desiredMax, double desiredMin )
{
// TODO (ecorm): Investigate X scale flickering when panning at minimum zoom level
// Possible cause: When AdjustLimitedView subtracts the out-of-bound delta, it does not
// revert back to the exact same original coordinates due to floating point rounding errors.
m_posX = pos;
m_desiredXmax = desiredMax;
m_desiredXmin = desiredMin;
AdjustLimitedView( wxHORIZONTAL );
return true;
}
bool mpWindow::SetYView( double pos, double desiredMax, double desiredMin )
{
m_posY = pos;
m_desiredYmax = desiredMax;
m_desiredYmin = desiredMin;
AdjustLimitedView( wxVERTICAL );
return true;
}
void mpWindow::ZoomIn( const wxPoint& centerPoint )
{
ZoomIn( centerPoint, zoomIncrementalFactor, wxBOTH );
}
void mpWindow::ZoomIn( const wxPoint& centerPoint, double zoomFactor, wxOrientation directions )
{
DoZoom( centerPoint, zoomFactor, directions );
}
void mpWindow::ZoomOut( const wxPoint& centerPoint )
{
ZoomOut( centerPoint, zoomIncrementalFactor, wxBOTH );
}
void mpWindow::ZoomOut( const wxPoint& centerPoint, double zoomFactor, wxOrientation directions )
{
if( zoomFactor == 0 )
zoomFactor = 1.0;
DoZoom( centerPoint, 1.0 / zoomFactor, directions );
}
void mpWindow::ZoomRect( wxPoint p0, wxPoint p1 )
{
pushZoomUndo( { m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax } );
// Constrain given rectangle to plot area
const int pMinX = m_marginLeft;
const int pMaxX = m_scrX - m_marginRight;
const int pMinY = m_marginTop;
const int pMaxY = m_scrY - m_marginBottom;
p0.x = std::max( p0.x, pMinX );
p0.x = std::min( p0.x, pMaxX );
p0.y = std::max( p0.y, pMinY );
p0.y = std::min( p0.y, pMaxY );
p1.x = std::max( p1.x, pMinX );
p1.x = std::min( p1.x, pMaxX );
p1.y = std::max( p1.y, pMinY );
p1.y = std::min( p1.y, pMaxY );
// Compute the 2 corners in graph coordinates:
double p0x = p2x( p0.x );
double p0y = p2y( p0.y );
double p1x = p2x( p1.x );
double p1y = p2y( p1.y );
// Order them:
double zoom_x_min = p0x<p1x ? p0x : p1x;
double zoom_x_max = p0x>p1x ? p0x : p1x;
double zoom_y_min = p0y<p1y ? p0y : p1y;
double zoom_y_max = p0y>p1y ? p0y : p1y;
if( m_yLocked )
{
zoom_y_min = m_desiredYmin;
zoom_y_max = m_desiredYmax;
}
Fit( zoom_x_min, zoom_x_max, zoom_y_min, zoom_y_max );
// Even with the input rectangle contrained to the plot area, it's still possible for the
// resulting view to exceed limits when a portion of the gap is grabbed.
AdjustLimitedView();
// These additional checks are needed because AdjustLimitedView only adjusts the position
// and not the scale.
wxOrientation directionsNeedingRefitting = ViewNeedsRefitting( wxBOTH );
if( directionsNeedingRefitting != 0 )
Fit( m_minX, m_maxX, m_minY, m_maxY, nullptr, nullptr, directionsNeedingRefitting );
}
void mpWindow::pushZoomUndo( const std::array<double, 4>& aZoom )
{
m_undoZoomStack.push( aZoom );
while( !m_redoZoomStack.empty() )
m_redoZoomStack.pop();
}
void mpWindow::ZoomUndo()
{
if( m_undoZoomStack.size() )
{
m_redoZoomStack.push( { m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax } );
std::array<double, 4> zoom = m_undoZoomStack.top();
m_undoZoomStack.pop();
Fit( zoom[0], zoom[1], zoom[2], zoom[3] );
AdjustLimitedView();
}
}
void mpWindow::ZoomRedo()
{
if( m_redoZoomStack.size() )
{
m_undoZoomStack.push( { m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax } );
std::array<double, 4> zoom = m_redoZoomStack.top();
m_redoZoomStack.pop();
Fit( zoom[0], zoom[1], zoom[2], zoom[3] );
AdjustLimitedView();
}
}
void mpWindow::OnShowPopupMenu( wxMouseEvent& event )
{
m_clickedX = event.GetX();
m_clickedY = event.GetY();
m_popmenu.Enable( mpID_ZOOM_UNDO, !m_undoZoomStack.empty() );
m_popmenu.Enable( mpID_ZOOM_REDO, !m_redoZoomStack.empty() );
PopupMenu( &m_popmenu, event.GetX(), event.GetY() );
}
void mpWindow::OnFit( wxCommandEvent& WXUNUSED( event ) )
{
pushZoomUndo( { m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax } );
Fit();
}
void mpWindow::OnCenter( wxCommandEvent& WXUNUSED( event ) )
{
GetClientSize( &m_scrX, &m_scrY );
int centerX = (m_scrX - m_marginLeft - m_marginRight) / 2;
int centerY = (m_scrY - m_marginTop - m_marginBottom) / 2;
SetPos( p2x( m_clickedX - centerX ), p2y( m_clickedY - centerY ) );
}
mpWindow::MouseWheelActionSet mpWindow::defaultMouseWheelActions()
{
MouseWheelActionSet actions;
actions.verticalUnmodified = MouseWheelAction::ZOOM;
actions.verticalWithCtrl = MouseWheelAction::PAN_LEFT_RIGHT;
actions.verticalWithShift = MouseWheelAction::PAN_UP_DOWN;
actions.verticalWithAlt = MouseWheelAction::NONE;
actions.horizontal = MouseWheelAction::NONE;
return actions;
}
void mpWindow::onZoomIn( wxCommandEvent& WXUNUSED( event ) )
{
ZoomIn( wxPoint( m_mouseMClick.x, m_mouseMClick.y ) );
}
void mpWindow::onZoomOut( wxCommandEvent& WXUNUSED( event ) )
{
ZoomOut();
}
void mpWindow::onZoomUndo( wxCommandEvent& WXUNUSED( event ) )
{
ZoomUndo();
}
void mpWindow::onZoomRedo( wxCommandEvent& WXUNUSED( event ) )
{
ZoomRedo();
}
void mpWindow::OnSize( wxSizeEvent& WXUNUSED( event ) )
{
// Try to fit again with the new window size:
Fit( m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax );
}
bool mpWindow::AddLayer( mpLayer* layer, bool refreshDisplay )
{
if( layer )
{
m_layers.push_back( layer );
if( refreshDisplay )
UpdateAll();
return true;
}
return false;
}
bool mpWindow::DelLayer( mpLayer* layer, bool alsoDeleteObject, bool refreshDisplay )
{
wxLayerList::iterator layIt;
for( layIt = m_layers.begin(); layIt != m_layers.end(); layIt++ )
{
if( *layIt == layer )
{
// Also delete the object?
if( alsoDeleteObject )
delete *layIt;
m_layers.erase( layIt ); // this deleted the reference only
if( refreshDisplay )
UpdateAll();
return true;
}
}
return false;
}
void mpWindow::DelAllLayers( bool alsoDeleteObject, bool refreshDisplay )
{
while( m_layers.size()>0 )
{
// Also delete the object?
if( alsoDeleteObject )
delete m_layers[0];
m_layers.erase( m_layers.begin() ); // this deleted the reference only
}
if( refreshDisplay )
UpdateAll();
}
void mpWindow::OnPaint( wxPaintEvent& WXUNUSED( event ) )
{
wxPaintDC paintDC( this );
paintDC.GetSize( &m_scrX, &m_scrY ); // This is the size of the visible area only!
// Selects direct or buffered draw:
wxDC* targetDC = &paintDC;
// J.L.Blanco @ Aug 2007: Added double buffer support
if( m_enableDoubleBuffer )
{
if( m_last_lx != m_scrX || m_last_ly != m_scrY )
{
delete m_buff_bmp;
m_buff_bmp = new wxBitmap( m_scrX, m_scrY );
m_buff_dc.SelectObject( *m_buff_bmp );
m_last_lx = m_scrX;
m_last_ly = m_scrY;
}
targetDC = &m_buff_dc;
}
if( wxGraphicsContext* ctx = targetDC->GetGraphicsContext() )
{
if( !ctx->SetInterpolationQuality( wxINTERPOLATION_BEST ) )
if( !ctx->SetInterpolationQuality( wxINTERPOLATION_GOOD ) )
ctx->SetInterpolationQuality( wxINTERPOLATION_FAST );
ctx->SetAntialiasMode( wxANTIALIAS_DEFAULT );
}
// Draw background:
targetDC->SetPen( *wxTRANSPARENT_PEN );
wxBrush brush( GetBackgroundColour() );
targetDC->SetBrush( brush );
targetDC->SetTextForeground( m_fgColour );
targetDC->DrawRectangle( 0, 0, m_scrX, m_scrY );
// Draw all the layers:
for( mpLayer* layer : m_layers )
layer->Plot( *targetDC, *this );
if( m_zooming )
{
wxPen pen( m_fgColour, 1, wxPENSTYLE_DOT );
targetDC->SetPen( pen );
targetDC->SetBrush( *wxTRANSPARENT_BRUSH );
targetDC->DrawRectangle( m_zoomRect );
}
// If doublebuffer, draw now to the window:
if( m_enableDoubleBuffer )
paintDC.Blit( 0, 0, m_scrX, m_scrY, targetDC, 0, 0 );
}
void mpWindow::DoZoom( const wxPoint& centerPoint, double zoomFactor, wxOrientation directions )
{
if( m_yLocked )
{
if( directions == wxVERTICAL )
return;
directions = wxHORIZONTAL;
}
const bool horizontally = ( directions & wxHORIZONTAL ) != 0;
const bool vertically = ( directions & wxVERTICAL ) != 0;
pushZoomUndo( { m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax } );
// Preserve the position of the clicked point:
wxPoint c( centerPoint );
if( c == wxDefaultPosition )
{
GetClientSize( &m_scrX, &m_scrY );
c.x = ( m_scrX - m_marginLeft - m_marginRight ) / 2 + m_marginLeft;
c.y = ( m_scrY - m_marginTop - m_marginBottom ) / 2 + m_marginTop;
}
else
{
c.x = std::max( c.x, m_marginLeft );
c.x = std::min( c.x, m_scrX - m_marginRight );
c.y = std::max( c.y, m_marginTop );
c.y = std::min( c.y, m_scrY - m_marginBottom );
}
// Zoom in/out:
const double MAX_SCALE = 1e6;
const double newScaleX = horizontally ? ( m_scaleX * zoomFactor ) : m_scaleX;
const double newScaleY = vertically ? ( m_scaleY * zoomFactor ) : m_scaleY;
// Baaaaad things happen when you zoom in too much..
if( newScaleX > MAX_SCALE || newScaleY > MAX_SCALE )
return;
if( horizontally )
{
// Transform the clicked X point to layer coordinates:
const double prior_layer_x = p2x( c.x );
// Adjust the new X scale and plot X origin:
m_scaleX = newScaleX;
m_posX = prior_layer_x - c.x / newScaleX;
// Recompute the desired X view extents:
RecomputeDesiredX( m_desiredXmin, m_desiredXmax );
}
if( vertically )
{
// Transform the clicked Y point to layer coordinates:
const double prior_layer_y = p2y( c.y );
// Adjust the new Y scale and plot Y origin:
m_scaleY = newScaleY;
m_posY = prior_layer_y + c.y / newScaleY;
// Recompute the desired Y view extents:
RecomputeDesiredY( m_desiredYmin, m_desiredYmax );
}
AdjustLimitedView( directions );
if( zoomFactor < 1.0 )
{
// These additional checks are needed because AdjustLimitedView only adjusts the position
// and not the scale.
wxOrientation directionsNeedingRefitting = ViewNeedsRefitting( directions );
// If the view is still out-of-limits after AdjustLimitedView is called, perform a Fit
// along the offending dimension(s).
if( directionsNeedingRefitting != 0 )
Fit( m_minX, m_maxX, m_minY, m_maxY, nullptr, nullptr, directionsNeedingRefitting );
}
UpdateAll();
}
void mpWindow::RecomputeDesiredX( double& min, double& max )
{
const int plotScreenWidth = m_scrX - m_marginLeft - m_marginRight;
const double plotSpanX = plotScreenWidth / m_scaleX;
const double desiredSpanX = plotSpanX / ( 2 * m_leftRightPlotGapFactor + 1 );
const double xGap = desiredSpanX * m_leftRightPlotGapFactor;
min = m_posX + ( m_marginLeft / m_scaleX ) + xGap;
max = m_desiredXmin + desiredSpanX;
}
void mpWindow::RecomputeDesiredY( double& min, double& max )
{
const int plotScreenHeight = m_scrY - m_marginTop - m_marginBottom;
const double plotSpanY = plotScreenHeight / m_scaleY;
const double desiredSpanY = plotSpanY / ( 2 * m_topBottomPlotGapFactor + 1 );
const double yGap = desiredSpanY * m_topBottomPlotGapFactor;
max = m_posY - ( m_marginTop / m_scaleY ) - yGap;
min = m_desiredYmax - desiredSpanY;
}
wxOrientation mpWindow::ViewNeedsRefitting( wxOrientation directions ) const
{
if( !m_enableLimitedView )
return static_cast<wxOrientation>( 0 );
// Allow a gap between the extrema of the curve and the edges of the plot area. Not to be
// confused with the left/right/top/bottom margins outside the plot area.
const double xGap = fabs( m_maxX - m_minX ) * m_leftRightPlotGapFactor;
const double yGap = fabs( m_maxY - m_minY ) * m_topBottomPlotGapFactor;
wxOrientation result = {};
if( ( directions & wxHORIZONTAL ) != 0 )
{
if( ( m_desiredXmax > m_maxX + xGap ) || ( m_desiredXmin < m_minX - xGap ) )
result = static_cast<wxOrientation>( result | wxHORIZONTAL );
}
if( ( directions & wxVERTICAL ) != 0 )
{
if( ( m_desiredYmax > m_maxY + yGap ) || ( m_desiredYmin < m_minY - yGap ) )
result = static_cast<wxOrientation>( result | wxVERTICAL );
}
return result;
}
void mpWindow::PerformMouseWheelAction( wxMouseEvent& event, MouseWheelAction action )
{
const int change = event.GetWheelRotation();
const double changeUnitsX = change / m_scaleX;
const double changeUnitsY = change / m_scaleY;
const wxPoint clickPt( event.GetX(), event.GetY() );
switch( action )
{
case MouseWheelAction::NONE: break;
case MouseWheelAction::PAN_LEFT_RIGHT:
SetXView( m_posX + changeUnitsX, m_desiredXmax + changeUnitsX,
m_desiredXmin + changeUnitsX );
UpdateAll();
break;
case MouseWheelAction::PAN_RIGHT_LEFT:
SetXView( m_posX - changeUnitsX, m_desiredXmax - changeUnitsX,
m_desiredXmin - changeUnitsX );
UpdateAll();
break;
case MouseWheelAction::PAN_UP_DOWN:
if( !m_yLocked )
{
SetYView( m_posY + changeUnitsY, m_desiredYmax + changeUnitsY,
m_desiredYmin + changeUnitsY );
UpdateAll();
}
break;
case MouseWheelAction::ZOOM:
if( event.GetWheelRotation() > 0 )
ZoomIn( clickPt );
else
ZoomOut( clickPt );
break;
case MouseWheelAction::ZOOM_HORIZONTALLY:
if( event.GetWheelRotation() > 0 )
ZoomIn( clickPt, zoomIncrementalFactor, wxHORIZONTAL );
else
ZoomOut( clickPt, zoomIncrementalFactor, wxHORIZONTAL );
break;
case MouseWheelAction::ZOOM_VERTICALLY:
if( event.GetWheelRotation() > 0 )
ZoomIn( clickPt, zoomIncrementalFactor, wxVERTICAL );
else
ZoomOut( clickPt, zoomIncrementalFactor, wxVERTICAL );
break;
default: break;
}
}
bool mpWindow::UpdateBBox()
{
m_minX = 0.0;
m_maxX = 1.0;
m_minY = 0.0;
m_maxY = 1.0;
return true;
}
void mpWindow::UpdateAll()
{
UpdateBBox();
Refresh( false );
}
void mpWindow::SetScaleX( double scaleX )
{
if( scaleX != 0 )
m_scaleX = scaleX;
UpdateAll();
}
// New methods implemented by Davide Rondini
mpLayer* mpWindow::GetLayer( int position ) const
{
if( ( position >= (int) m_layers.size() ) || position < 0 )
return nullptr;
return m_layers[position];
}
const mpLayer* mpWindow::GetLayerByName( const wxString& name ) const
{
for( const mpLayer* layer : m_layers )
{
if( !layer->GetName().Cmp( name ) )
return layer;
}
return nullptr; // Not found
}
void mpWindow::GetBoundingBox( double* bbox ) const
{
bbox[0] = m_minX;
bbox[1] = m_maxX;
bbox[2] = m_minY;
bbox[3] = m_maxY;
}
bool mpWindow::SaveScreenshot( wxImage& aImage, wxSize aImageSize, bool aFit )
{
int sizeX, sizeY;
if( aImageSize == wxDefaultSize )
{
sizeX = m_scrX;
sizeY = m_scrY;
}
else
{
sizeX = aImageSize.x;
sizeY = aImageSize.y;
SetScr( sizeX, sizeY );
}
wxBitmap screenBuffer( sizeX, sizeY );
wxMemoryDC screenDC;
screenDC.SelectObject( screenBuffer );
screenDC.SetPen( *wxWHITE_PEN );
screenDC.SetTextForeground( m_fgColour );
wxBrush brush( GetBackgroundColour() );
screenDC.SetBrush( brush );
screenDC.DrawRectangle( 0, 0, sizeX, sizeY );
if( aFit )
Fit( m_minX, m_maxX, m_minY, m_maxY, &sizeX, &sizeY );
else
Fit( m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax, &sizeX, &sizeY );
// Draw all the layers:
for( mpLayer* layer : m_layers )
layer->Plot( screenDC, *this );
if( aImageSize != wxDefaultSize )
{
// Restore dimensions
int bk_scrX = m_scrX;
int bk_scrY = m_scrY;
SetScr( bk_scrX, bk_scrY );
Fit( m_desiredXmin, m_desiredXmax, m_desiredYmin, m_desiredYmax, &bk_scrX, &bk_scrY );
UpdateAll();
}
// Once drawing is complete, actually save screen shot
aImage = screenBuffer.ConvertToImage();
return true;
}
void mpWindow::SetMargins( int top, int right, int bottom, int left )
{
m_marginTop = top;
m_marginRight = right;
m_marginBottom = bottom;
m_marginLeft = left;
}
mpInfoLayer* mpWindow::IsInsideInfoLayer( wxPoint& point )
{
for( mpLayer* layer : m_layers )
{
if( layer->IsInfo() )
{
mpInfoLayer* tmpLyr = static_cast<mpInfoLayer*>( layer );
if( tmpLyr->Inside( point ) )
return tmpLyr;
}
}
return nullptr;
}
void mpWindow::SetLayerVisible( const wxString& name, bool viewable )
{
if( mpLayer* lx = GetLayerByName( name ) )
{
lx->SetVisible( viewable );
UpdateAll();
}
}
bool mpWindow::IsLayerVisible( const wxString& name ) const
{
if( const mpLayer* lx = GetLayerByName( name ) )
return lx->IsVisible();
return false;
}
void mpWindow::SetLayerVisible( const unsigned int position, bool viewable )
{
if( mpLayer* lx = GetLayer( position ) )
{
lx->SetVisible( viewable );
UpdateAll();
}
}
bool mpWindow::IsLayerVisible( unsigned int position ) const
{
if( const mpLayer* lx = GetLayer( position ) )
return lx->IsVisible();
return false;
}
void mpWindow::SetColourTheme( const wxColour& bgColour, const wxColour& drawColour,
const wxColour& axesColour )
{
SetBackgroundColour( bgColour );
SetForegroundColour( drawColour );
m_bgColour = bgColour;
m_fgColour = drawColour;
m_axColour = axesColour;
// Cycle between layers to set colours and properties to them
for( mpLayer* layer : m_layers )
{
if( layer->GetLayerType() == mpLAYER_AXIS )
{
wxPen axisPen = layer->GetPen(); // Get the old pen to modify only colour, not style or width
axisPen.SetColour( axesColour );
layer->SetPen( axisPen );
}
if( layer->GetLayerType() == mpLAYER_INFO )
{
wxPen infoPen = layer->GetPen(); // Get the old pen to modify only colour, not style or width
infoPen.SetColour( drawColour );
layer->SetPen( infoPen );
}
}
}
template <typename... Ts>
mpWindow::mpWindow( DelegatingContructorTag, Ts&&... windowArgs ) :
wxWindow( std::forward<Ts>( windowArgs )... ),
m_minX( 0.0 ),
m_maxX( 0.0 ),
m_minY( 0.0 ),
m_maxY( 0.0 ),
m_scaleX( 1.0 ),
m_scaleY( 1.0 ),
m_posX( 0.0 ),
m_posY( 0.0 ),
m_scrX( 64 ),
m_scrY( 64 ),
m_clickedX( 0 ),
m_clickedY( 0 ),
m_yLocked( false ),
m_desiredXmin( 0.0 ),
m_desiredXmax( 1.0 ),
m_desiredYmin( 0.0 ),
m_desiredYmax( 1.0 ),
m_topBottomPlotGapFactor( 0.03 ),
m_leftRightPlotGapFactor( 0.0 ),
m_marginTop( 0 ),
m_marginRight( 0 ),
m_marginBottom( 0 ),
m_marginLeft( 0 ),
m_last_lx( 0 ),
m_last_ly( 0 ),
m_buff_bmp( nullptr ),
m_enableDoubleBuffer( false ),
m_enableMouseNavigation( true ),
m_enableLimitedView( false ),
m_mouseWheelActions( defaultMouseWheelActions() ),
m_movingInfoLayer( nullptr ),
m_zooming( false )
{}
void mpWindow::initializeGraphicsContext()
{
if( wxGraphicsContext* ctx = m_buff_dc.GetGraphicsContext() )
{
if( !ctx->SetInterpolationQuality( wxINTERPOLATION_BEST )
|| !ctx->SetInterpolationQuality( wxINTERPOLATION_GOOD ) )
{
ctx->SetInterpolationQuality( wxINTERPOLATION_FAST );
}
ctx->SetAntialiasMode( wxANTIALIAS_DEFAULT );
}
}
// -----------------------------------------------------------------------------
// mpFXYVector implementation - by Jose Luis Blanco (AGO-2007)
// -----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS( mpFXYVector, mpFXY )
// Constructor
mpFXYVector::mpFXYVector( const wxString& name, int flags ) :
mpFXY( name, flags )
{
m_index = 0;
m_minX = -1;
m_maxX = 1;
m_minY = -1;
m_maxY = 1;
m_type = mpLAYER_PLOT;
}
double mpScaleX::TransformToPlot( double x ) const
{
return (x + m_offset) * m_scale;
}
double mpScaleX::TransformFromPlot( double xplot ) const
{
return xplot / m_scale - m_offset;
}
double mpScaleY::TransformToPlot( double x ) const
{
return (x + m_offset) * m_scale;
}
double mpScaleY::TransformFromPlot( double xplot ) const
{
return xplot / m_scale - m_offset;
}
double mpScaleXLog::TransformToPlot( double x ) const
{
double xlogmin = log10( m_minV );
double xlogmax = log10( m_maxV );
return ( log10( x ) - xlogmin) / (xlogmax - xlogmin);
}
double mpScaleXLog::TransformFromPlot( double xplot ) const
{
double xlogmin = log10( m_minV );
double xlogmax = log10( m_maxV );
return pow( 10.0, xplot * (xlogmax - xlogmin) + xlogmin );
}
void mpFXYVector::Rewind()
{
m_index = 0;
}
size_t mpFXYVector::GetCount() const
{
return m_xs.size();
}
bool mpFXYVector::GetNextXY( double& x, double& y )
{
if( m_index >= m_xs.size() )
{
return false;
}
else
{
x = m_xs[m_index];
y = m_ys[m_index++];
return m_index <= m_xs.size();
}
}
void mpFXYVector::Clear()
{
m_xs.clear();
m_ys.clear();
}
void mpFXYVector::SetData( const std::vector<double>& xs, const std::vector<double>& ys )
{
// Check if the data vectors are of the same size
if( xs.size() != ys.size() )
return;
// Copy the data:
m_xs = xs;
m_ys = ys;
// Update internal variables for the bounding box.
if( xs.size() > 0 )
{
m_minX = xs[0];
m_maxX = xs[0];
m_minY = ys[0];
m_maxY = ys[0];
for( const double x : xs )
{
if( x < m_minX )
m_minX = x;
if( x > m_maxX )
m_maxX = x;
}
for( const double y : ys )
{
if( y < m_minY )
m_minY = y;
if( y > m_maxY )
m_maxY = y;
}
}
else
{
m_minX = 0;
m_maxX = 0;
m_minY = 0;
m_maxY = 0;
}
}
void mpFXY::SetScale( mpScaleBase* scaleX, mpScaleBase* scaleY )
{
m_scaleX = scaleX;
m_scaleY = scaleY;
UpdateScales();
}
void mpFXY::UpdateScales()
{
if( m_scaleX )
m_scaleX->ExtendDataRange( GetMinX(), GetMaxX() );
if( m_scaleY )
m_scaleY->ExtendDataRange( GetMinY(), GetMaxY() );
}
double mpFXY::s2x( double plotCoordX ) const
{
return m_scaleX ? m_scaleX->TransformFromPlot( plotCoordX ) : plotCoordX;
}
double mpFXY::s2y( double plotCoordY ) const
{
return m_scaleY ? m_scaleY->TransformFromPlot( plotCoordY ) : plotCoordY;
}
double mpFXY::x2s( double x ) const
{
return m_scaleX ? m_scaleX->TransformToPlot( x ) : x;
}
double mpFXY::y2s( double y ) const
{
return m_scaleY ? m_scaleY->TransformToPlot( y ) : y;
}
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