kicad/eeschema/lib_arc.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2004 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
* Copyright (C) 2004-2011 KiCad Developers, see change_log.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* @file lib_arc.cpp
*/
#include <fctsys.h>
#include <gr_basic.h>
#include <macros.h>
#include <class_drawpanel.h>
#include <plot_common.h>
#include <trigo.h>
#include <wxstruct.h>
#include <richio.h>
#include <base_units.h>
#include <msgpanel.h>
#include <general.h>
#include <lib_arc.h>
#include <transform.h>
// Helper function
2013-05-04 11:57:09 +00:00
static inline wxPoint twoPointVector( const wxPoint &startPoint, const wxPoint &endPoint )
{
return endPoint - startPoint;
}
//! @brief Given three points A B C, compute the circumcenter of the resulting triangle
//! reference: http://en.wikipedia.org/wiki/Circumscribed_circle
//! Coordinates of circumcenter in Cartesian coordinates
static wxPoint calcCenter( const wxPoint& A, const wxPoint& B, const wxPoint& C )
{
double circumCenterX, circumCenterY;
double Ax = (double) A.x;
double Ay = (double) A.y;
double Bx = (double) B.x;
double By = (double) B.y;
double Cx = (double) C.x;
double Cy = (double) C.y;
wxPoint circumCenter;
double D = 2.0 * ( Ax * ( By - Cy ) + Bx * ( Cy - Ay ) + Cx * ( Ay - By ) );
// prevent division / 0
if( fabs( D ) < 1e-7 )
D = 1e-7;
circumCenterX = ( (Ay * Ay + Ax * Ax) * (By - Cy) +
(By * By + Bx * Bx) * (Cy - Ay) +
(Cy * Cy + Cx * Cx) * (Ay - By) ) / D;
circumCenterY = ( (Ay * Ay + Ax * Ax) * (Cx - Bx) +
(By * By + Bx * Bx) * (Ax - Cx) +
(Cy * Cy + Cx * Cx) * (Bx - Ax) ) / D;
circumCenter.x = (int) circumCenterX;
circumCenter.y = (int) circumCenterY;
return circumCenter;
}
LIB_ARC::LIB_ARC( LIB_PART* aParent ) : LIB_ITEM( LIB_ARC_T, aParent )
{
m_Radius = 0;
m_t1 = 0;
m_t2 = 0;
m_Width = 0;
m_Fill = NO_FILL;
m_isFillable = true;
m_typeName = _( "Arc" );
m_editState = 0;
m_lastEditState = 0;
}
bool LIB_ARC::Save( OUTPUTFORMATTER& aFormatter )
{
int x1 = m_t1;
if( x1 > 1800 )
x1 -= 3600;
int x2 = m_t2;
if( x2 > 1800 )
x2 -= 3600;
aFormatter.Print( 0, "A %d %d %d %d %d %d %d %d %c %d %d %d %d\n",
m_Pos.x, m_Pos.y, m_Radius, x1, x2, m_Unit, m_Convert, m_Width,
fill_tab[m_Fill], m_ArcStart.x, m_ArcStart.y, m_ArcEnd.x,
m_ArcEnd.y );
return true;
}
bool LIB_ARC::Load( LINE_READER& aLineReader, wxString& aErrorMsg )
{
int startx, starty, endx, endy, cnt;
char tmp[256] = "";
char* line = (char*) aLineReader;
cnt = sscanf( line + 2, "%d %d %d %d %d %d %d %d %255s %d %d %d %d",
&m_Pos.x, &m_Pos.y, &m_Radius, &m_t1, &m_t2, &m_Unit,
&m_Convert, &m_Width, tmp, &startx, &starty, &endx, &endy );
if( cnt < 8 )
{
aErrorMsg.Printf( _( "Arc only had %d parameters of the required 8" ), cnt );
return false;
}
if( tmp[0] == 'F' )
m_Fill = FILLED_SHAPE;
if( tmp[0] == 'f' )
m_Fill = FILLED_WITH_BG_BODYCOLOR;
NORMALIZE_ANGLE_POS( m_t1 );
NORMALIZE_ANGLE_POS( m_t2 );
// Actual Coordinates of arc ends are read from file
if( cnt >= 13 )
{
m_ArcStart.x = startx;
m_ArcStart.y = starty;
m_ArcEnd.x = endx;
m_ArcEnd.y = endy;
}
else
{
// Actual Coordinates of arc ends are not read from file
// (old library), calculate them
m_ArcStart.x = m_Radius;
m_ArcStart.y = 0;
m_ArcEnd.x = m_Radius;
m_ArcEnd.y = 0;
RotatePoint( &m_ArcStart.x, &m_ArcStart.y, -m_t1 );
m_ArcStart.x += m_Pos.x;
m_ArcStart.y += m_Pos.y;
RotatePoint( &m_ArcEnd.x, &m_ArcEnd.y, -m_t2 );
m_ArcEnd.x += m_Pos.x;
m_ArcEnd.y += m_Pos.y;
}
return true;
}
bool LIB_ARC::HitTest( const wxPoint& aRefPoint ) const
{
int mindist = GetPenSize() / 2;
// Have a minimal tolerance for hit test
if( mindist < MINIMUM_SELECTION_DISTANCE )
mindist = MINIMUM_SELECTION_DISTANCE;
return HitTest( aRefPoint, mindist, DefaultTransform );
}
bool LIB_ARC::HitTest( const wxPoint &aPosition, int aThreshold, const TRANSFORM& aTransform ) const
{
if( aThreshold < 0 )
aThreshold = GetPenSize() / 2;
// TODO: use aTransMat to calculates parameters
wxPoint relativePosition = aPosition;
NEGATE( relativePosition.y ); // reverse Y axis
2013-05-04 11:57:09 +00:00
int distance = KiROUND( GetLineLength( m_Pos, relativePosition ) );
if( abs( distance - m_Radius ) > aThreshold )
return false;
// We are on the circle, ensure we are only on the arc, i.e. between
// m_ArcStart and m_ArcEnd
wxPoint startEndVector = twoPointVector( m_ArcStart, m_ArcEnd);
wxPoint startRelativePositionVector = twoPointVector( m_ArcStart, relativePosition );
wxPoint centerStartVector = twoPointVector( m_Pos, m_ArcStart );
wxPoint centerEndVector = twoPointVector( m_Pos, m_ArcEnd );
wxPoint centerRelativePositionVector = twoPointVector( m_Pos, relativePosition );
// Compute the cross product to check if the point is in the sector
double crossProductStart = CrossProduct( centerStartVector, centerRelativePositionVector );
double crossProductEnd = CrossProduct( centerEndVector, centerRelativePositionVector );
// The cross products need to be exchanged, depending on which side the center point
// relative to the start point to end point vector lies
if( CrossProduct( startEndVector, startRelativePositionVector ) < 0 )
{
EXCHG( crossProductStart, crossProductEnd );
}
// When the cross products have a different sign, the point lies in sector
// also check, if the reference is near start or end point
return HitTestPoints( m_ArcStart, relativePosition, MINIMUM_SELECTION_DISTANCE ) ||
HitTestPoints( m_ArcEnd, relativePosition, MINIMUM_SELECTION_DISTANCE ) ||
( crossProductStart <= 0 && crossProductEnd >= 0 );
}
EDA_ITEM* LIB_ARC::Clone() const
{
return new LIB_ARC( *this );
}
int LIB_ARC::compare( const LIB_ITEM& aOther ) const
{
wxASSERT( aOther.Type() == LIB_ARC_T );
const LIB_ARC* tmp = ( LIB_ARC* ) &aOther;
if( m_Pos.x != tmp->m_Pos.x )
return m_Pos.x - tmp->m_Pos.x;
if( m_Pos.y != tmp->m_Pos.y )
return m_Pos.y - tmp->m_Pos.y;
if( m_t1 != tmp->m_t1 )
return m_t1 - tmp->m_t1;
if( m_t2 != tmp->m_t2 )
return m_t2 - tmp->m_t2;
return 0;
}
void LIB_ARC::SetOffset( const wxPoint& aOffset )
{
m_Pos += aOffset;
m_ArcStart += aOffset;
m_ArcEnd += aOffset;
}
bool LIB_ARC::Inside( EDA_RECT& aRect ) const
{
return aRect.Contains( m_ArcStart.x, -m_ArcStart.y )
|| aRect.Contains( m_ArcEnd.x, -m_ArcEnd.y );
}
void LIB_ARC::Move( const wxPoint& aPosition )
{
wxPoint offset = aPosition - m_Pos;
m_Pos = aPosition;
m_ArcStart += offset;
m_ArcEnd += offset;
}
void LIB_ARC::MirrorHorizontal( const wxPoint& aCenter )
{
m_Pos.x -= aCenter.x;
m_Pos.x *= -1;
m_Pos.x += aCenter.x;
m_ArcStart.x -= aCenter.x;
m_ArcStart.x *= -1;
m_ArcStart.x += aCenter.x;
m_ArcEnd.x -= aCenter.x;
m_ArcEnd.x *= -1;
m_ArcEnd.x += aCenter.x;
EXCHG( m_ArcStart, m_ArcEnd );
EXCHG( m_t1, m_t2 );
m_t1 = 1800 - m_t1;
m_t2 = 1800 - m_t2;
if( m_t1 > 3600 || m_t2 > 3600 )
{
m_t1 -= 3600;
m_t2 -= 3600;
}
else if( m_t1 < -3600 || m_t2 < -3600 )
{
m_t1 += 3600;
m_t2 += 3600;
}
}
void LIB_ARC::MirrorVertical( const wxPoint& aCenter )
{
m_Pos.y -= aCenter.y;
m_Pos.y *= -1;
m_Pos.y += aCenter.y;
m_ArcStart.y -= aCenter.y;
m_ArcStart.y *= -1;
m_ArcStart.y += aCenter.y;
m_ArcEnd.y -= aCenter.y;
m_ArcEnd.y *= -1;
m_ArcEnd.y += aCenter.y;
EXCHG( m_ArcStart, m_ArcEnd );
EXCHG( m_t1, m_t2 );
m_t1 = - m_t1;
m_t2 = - m_t2;
if( m_t1 > 3600 || m_t2 > 3600 )
{
m_t1 -= 3600;
m_t2 -= 3600;
}
else if( m_t1 < -3600 || m_t2 < -3600 )
{
m_t1 += 3600;
m_t2 += 3600;
}
}
void LIB_ARC::Rotate( const wxPoint& aCenter, bool aRotateCCW )
{
int rot_angle = aRotateCCW ? -900 : 900;
RotatePoint( &m_Pos, aCenter, rot_angle );
RotatePoint( &m_ArcStart, aCenter, rot_angle );
RotatePoint( &m_ArcEnd, aCenter, rot_angle );
m_t1 -= rot_angle;
m_t2 -= rot_angle;
if( m_t1 > 3600 || m_t2 > 3600 )
{
m_t1 -= 3600;
m_t2 -= 3600;
}
else if( m_t1 < -3600 || m_t2 < -3600 )
{
m_t1 += 3600;
m_t2 += 3600;
}
}
void LIB_ARC::Plot( PLOTTER* aPlotter, const wxPoint& aOffset, bool aFill,
const TRANSFORM& aTransform )
{
wxASSERT( aPlotter != NULL );
int t1 = m_t1;
int t2 = m_t2;
wxPoint pos = aTransform.TransformCoordinate( m_Pos ) + aOffset;
aTransform.MapAngles( &t1, &t2 );
if( aFill && m_Fill == FILLED_WITH_BG_BODYCOLOR )
{
aPlotter->SetColor( GetLayerColor( LAYER_DEVICE_BACKGROUND ) );
aPlotter->Arc( pos, -t2, -t1, m_Radius, FILLED_SHAPE, 0 );
}
bool already_filled = m_Fill == FILLED_WITH_BG_BODYCOLOR;
aPlotter->SetColor( GetLayerColor( LAYER_DEVICE ) );
aPlotter->Arc( pos, -t2, -t1, m_Radius, already_filled ? NO_FILL : m_Fill, GetPenSize() );
}
int LIB_ARC::GetPenSize() const
{
return ( m_Width == 0 ) ? GetDefaultLineThickness() : m_Width;
}
void LIB_ARC::drawEditGraphics( EDA_RECT* aClipBox, wxDC* aDC, EDA_COLOR_T aColor )
{
// The edit indicators only get drawn when a new arc is being drawn.
if( !IsNew() )
return;
// Use the last edit state so when the drawing switches from the end mode to the center
// point mode, the last line between the center points gets erased.
if( m_lastEditState == 1 )
{
GRLine( aClipBox, aDC, m_ArcStart.x, -m_ArcStart.y, m_ArcEnd.x, -m_ArcEnd.y, 0, aColor );
}
else
{
GRDashedLine( aClipBox, aDC, m_ArcStart.x, -m_ArcStart.y, m_Pos.x, -m_Pos.y, 0, aColor );
GRDashedLine( aClipBox, aDC, m_ArcEnd.x, -m_ArcEnd.y, m_Pos.x, -m_Pos.y, 0, aColor );
}
}
void LIB_ARC::drawGraphic( EDA_DRAW_PANEL* aPanel, wxDC* aDC, const wxPoint& aOffset,
EDA_COLOR_T aColor, GR_DRAWMODE aDrawMode, void* aData,
const TRANSFORM& aTransform )
{
// Don't draw the arc until the end point is selected. Only the edit indicators
// get drawn at this time.
if( IsNew() && m_lastEditState == 1 )
return;
wxPoint pos1, pos2, posc;
EDA_COLOR_T color = GetLayerColor( LAYER_DEVICE );
if( aColor < 0 ) // Used normal color or selected color
{
if( IsSelected() )
color = GetItemSelectedColor();
}
else
{
color = aColor;
}
pos1 = aTransform.TransformCoordinate( m_ArcEnd ) + aOffset;
pos2 = aTransform.TransformCoordinate( m_ArcStart ) + aOffset;
posc = aTransform.TransformCoordinate( m_Pos ) + aOffset;
int pt1 = m_t1;
int pt2 = m_t2;
bool swap = aTransform.MapAngles( &pt1, &pt2 );
if( swap )
{
EXCHG( pos1.x, pos2.x );
EXCHG( pos1.y, pos2.y );
}
GRSetDrawMode( aDC, aDrawMode );
FILL_T fill = aData ? NO_FILL : m_Fill;
if( aColor >= 0 )
fill = NO_FILL;
EDA_RECT* const clipbox = aPanel? aPanel->GetClipBox() : NULL;
if( fill == FILLED_WITH_BG_BODYCOLOR )
{
GRFilledArc( clipbox, aDC, posc.x, posc.y, pt1, pt2,
m_Radius, GetPenSize( ),
(m_Flags & IS_MOVED) ? color : GetLayerColor( LAYER_DEVICE_BACKGROUND ),
GetLayerColor( LAYER_DEVICE_BACKGROUND ) );
}
else if( fill == FILLED_SHAPE && !aData )
{
GRFilledArc( clipbox, aDC, posc.x, posc.y, pt1, pt2, m_Radius,
color, color );
}
else
{
#ifdef DRAW_ARC_WITH_ANGLE
GRArc( clipbox, aDC, posc.x, posc.y, pt1, pt2, m_Radius,
GetPenSize(), color );
#else
GRArc1( clipbox, aDC, pos1.x, pos1.y, pos2.x, pos2.y,
posc.x, posc.y, GetPenSize(), color );
#endif
}
/* Set to one (1) to draw bounding box around arc to validate bounding box
* calculation. */
#if 0
EDA_RECT bBox = GetBoundingBox();
GRRect( clipbox, aDC, bBox.GetOrigin().x, bBox.GetOrigin().y,
bBox.GetEnd().x, bBox.GetEnd().y, 0, LIGHTMAGENTA );
#endif
}
const EDA_RECT LIB_ARC::GetBoundingBox() const
{
int minX, minY, maxX, maxY, angleStart, angleEnd;
EDA_RECT rect;
wxPoint nullPoint, startPos, endPos, centerPos;
wxPoint normStart = m_ArcStart - m_Pos;
wxPoint normEnd = m_ArcEnd - m_Pos;
if( ( normStart == nullPoint ) || ( normEnd == nullPoint ) || ( m_Radius == 0 ) )
{
wxLogDebug( wxT("Invalid arc drawing definition, center(%d, %d) \
start(%d, %d), end(%d, %d), radius %d" ),
m_Pos.x, m_Pos.y, m_ArcStart.x, m_ArcStart.y, m_ArcEnd.x,
m_ArcEnd.y, m_Radius );
return rect;
}
endPos = DefaultTransform.TransformCoordinate( m_ArcEnd );
startPos = DefaultTransform.TransformCoordinate( m_ArcStart );
centerPos = DefaultTransform.TransformCoordinate( m_Pos );
angleStart = m_t1;
angleEnd = m_t2;
if( DefaultTransform.MapAngles( &angleStart, &angleEnd ) )
{
EXCHG( endPos.x, startPos.x );
EXCHG( endPos.y, startPos.y );
}
/* Start with the start and end point of the arc. */
minX = std::min( startPos.x, endPos.x );
minY = std::min( startPos.y, endPos.y );
maxX = std::max( startPos.x, endPos.x );
maxY = std::max( startPos.y, endPos.y );
/* Zero degrees is a special case. */
if( angleStart == 0 )
maxX = centerPos.x + m_Radius;
/* Arc end angle wrapped passed 360. */
if( angleStart > angleEnd )
angleEnd += 3600;
if( angleStart <= 900 && angleEnd >= 900 ) /* 90 deg */
maxY = centerPos.y + m_Radius;
if( angleStart <= 1800 && angleEnd >= 1800 ) /* 180 deg */
minX = centerPos.x - m_Radius;
if( angleStart <= 2700 && angleEnd >= 2700 ) /* 270 deg */
minY = centerPos.y - m_Radius;
if( angleStart <= 3600 && angleEnd >= 3600 ) /* 0 deg */
maxX = centerPos.x + m_Radius;
rect.SetOrigin( minX, minY );
rect.SetEnd( maxX, maxY );
rect.Inflate( m_Width / 2, m_Width / 2 );
return rect;
}
void LIB_ARC::GetMsgPanelInfo( std::vector< MSG_PANEL_ITEM >& aList )
{
wxString msg;
EDA_RECT bBox = GetBoundingBox();
LIB_ITEM::GetMsgPanelInfo( aList );
* KIWAY Milestone A): Make major modules into DLL/DSOs. ! The initial testing of this commit should be done using a Debug build so that all the wxASSERT()s are enabled. Also, be sure and keep enabled the USE_KIWAY_DLLs option. The tree won't likely build without it. Turning it off is senseless anyways. If you want stable code, go back to a prior version, the one tagged with "stable". * Relocate all functionality out of the wxApp derivative into more finely targeted purposes: a) DLL/DSO specific b) PROJECT specific c) EXE or process specific d) configuration file specific data e) configuration file manipulations functions. All of this functionality was blended into an extremely large wxApp derivative and that was incompatible with the desire to support multiple concurrently loaded DLL/DSO's ("KIFACE")s and multiple concurrently open projects. An amazing amount of organization come from simply sorting each bit of functionality into the proper box. * Switch to wxConfigBase from wxConfig everywhere except instantiation. * Add classes KIWAY, KIFACE, KIFACE_I, SEARCH_STACK, PGM_BASE, PGM_KICAD, PGM_SINGLE_TOP, * Remove "Return" prefix on many function names. * Remove obvious comments from CMakeLists.txt files, and from else() and endif()s. * Fix building boost for use in a DSO on linux. * Remove some of the assumptions in the CMakeLists.txt files that windows had to be the host platform when building windows binaries. * Reduce the number of wxStrings being constructed at program load time via static construction. * Pass wxConfigBase* to all SaveSettings() and LoadSettings() functions so that these functions are useful even when the wxConfigBase comes from another source, as is the case in the KICAD_MANAGER_FRAME. * Move the setting of the KIPRJMOD environment variable into class PROJECT, so that it can be moved into a project variable soon, and out of FP_LIB_TABLE. * Add the KIWAY_PLAYER which is associated with a particular PROJECT, and all its child wxFrames and wxDialogs now have a Kiway() member function which returns a KIWAY& that that window tree branch is in support of. This is like wxWindows DNA in that child windows get this member with proper value at time of construction. * Anticipate some of the needs for milestones B) and C) and make code adjustments now in an effort to reduce work in those milestones. * No testing has been done for python scripting, since milestone C) has that being largely reworked and re-thought-out.
2014-03-20 00:42:08 +00:00
msg = StringFromValue( g_UserUnit, m_Width, true );
aList.push_back( MSG_PANEL_ITEM( _( "Line Width" ), msg, BLUE ) );
msg.Printf( wxT( "(%d, %d, %d, %d)" ), bBox.GetOrigin().x,
bBox.GetOrigin().y, bBox.GetEnd().x, bBox.GetEnd().y );
aList.push_back( MSG_PANEL_ITEM( _( "Bounding Box" ), msg, BROWN ) );
}
wxString LIB_ARC::GetSelectMenuText() const
{
return wxString::Format( _( "Arc center (%s, %s), radius %s" ),
GetChars( CoordinateToString( m_Pos.x ) ),
GetChars( CoordinateToString( m_Pos.y ) ),
GetChars( CoordinateToString( m_Radius ) ) );
}
void LIB_ARC::BeginEdit( STATUS_FLAGS aEditMode, const wxPoint aPosition )
{
wxCHECK_RET( ( aEditMode & ( IS_NEW | IS_MOVED | IS_RESIZED ) ) != 0,
wxT( "Invalid edit mode for LIB_ARC object." ) );
if( aEditMode == IS_NEW )
{
m_ArcStart = m_ArcEnd = aPosition;
m_editState = m_lastEditState = 1;
}
else if( aEditMode == IS_MOVED )
{
m_initialPos = m_Pos;
m_initialCursorPos = aPosition;
SetEraseLastDrawItem();
}
else
{
// The arc center point has to be rotated with while adjusting the
// start or end point, determine the side of this point and the distance
// from the start / end point
wxPoint middlePoint = wxPoint( (m_ArcStart.x + m_ArcEnd.x) / 2,
(m_ArcStart.y + m_ArcEnd.y) / 2 );
wxPoint centerVector = m_Pos - middlePoint;
wxPoint startEndVector = twoPointVector( m_ArcStart, m_ArcEnd );
m_editCenterDistance = EuclideanNorm( centerVector );
// Determine on which side is the center point
m_editDirection = CrossProduct( startEndVector, centerVector ) ? 1 : -1;
// Drag either the start, end point or the outline
if( HitTestPoints( m_ArcStart, aPosition, MINIMUM_SELECTION_DISTANCE ) )
{
m_editSelectPoint = ARC_STATUS_START;
}
else if( HitTestPoints( m_ArcEnd, aPosition, MINIMUM_SELECTION_DISTANCE ) )
{
m_editSelectPoint = ARC_STATUS_END;
}
else
{
m_editSelectPoint = ARC_STATUS_OUTLINE;
}
m_editState = 0;
SetEraseLastDrawItem();
}
m_Flags = aEditMode;
}
bool LIB_ARC::ContinueEdit( const wxPoint aPosition )
{
wxCHECK_MSG( ( m_Flags & ( IS_NEW | IS_MOVED | IS_RESIZED ) ) != 0, false,
wxT( "Bad call to ContinueEdit(). LIB_ARC is not being edited." ) );
if( m_Flags == IS_NEW )
{
if( m_editState == 1 ) // Second position yields the arc segment length.
{
m_ArcEnd = aPosition;
m_editState = 2;
SetEraseLastDrawItem( false );
return true; // Need third position to calculate center point.
}
}
return false;
}
void LIB_ARC::EndEdit( const wxPoint& aPosition, bool aAbort )
{
wxCHECK_RET( ( m_Flags & ( IS_NEW | IS_MOVED | IS_RESIZED ) ) != 0,
wxT( "Bad call to EndEdit(). LIB_ARC is not being edited." ) );
SetEraseLastDrawItem( false );
m_lastEditState = 0;
m_editState = 0;
m_Flags = 0;
}
void LIB_ARC::calcEdit( const wxPoint& aPosition )
{
if( m_Flags == IS_RESIZED )
{
wxPoint newCenterPoint, startPos, endPos;
// Choose the point of the arc to be adjusted
if( m_editSelectPoint == ARC_STATUS_START )
{
startPos = aPosition;
endPos = m_ArcEnd;
}
else if( m_editSelectPoint == ARC_STATUS_END )
{
endPos = aPosition;
startPos = m_ArcStart;
}
else
{
// Use the cursor for adjusting the arc curvature
startPos = m_ArcStart;
endPos = m_ArcEnd;
// If the distance is too small, use the old center point
// else the new center point is calculated over the three points start/end/cursor
if( DistanceLinePoint( startPos, endPos, aPosition ) > MINIMUM_SELECTION_DISTANCE )
{
newCenterPoint = calcCenter( startPos, aPosition, endPos );
}
else
{
newCenterPoint = m_Pos;
}
// Determine if the arc angle is larger than 180 degrees -> this happens if both
// points (cursor position, center point) lie on the same side of the vector
// start-end
double crossA = CrossProduct( twoPointVector( startPos, endPos ),
twoPointVector( endPos, aPosition ) );
double crossB = CrossProduct( twoPointVector( startPos, endPos ),
twoPointVector( endPos, newCenterPoint ) );
if( ( crossA < 0 && crossB < 0 ) || ( crossA >= 0 && crossB >= 0 ) )
newCenterPoint = m_Pos;
}
if( m_editSelectPoint == ARC_STATUS_START || m_editSelectPoint == ARC_STATUS_END )
{
// Compute the new center point when the start/end points are modified
wxPoint middlePoint = wxPoint( (startPos.x + endPos.x) / 2,
(startPos.y + endPos.y) / 2 );
wxPoint startEndVector = twoPointVector( startPos, endPos );
wxPoint perpendicularVector = wxPoint( -startEndVector.y, startEndVector.x );
double lengthPerpendicularVector = EuclideanNorm( perpendicularVector );
// prevent too large values, division / 0
if( lengthPerpendicularVector < 1e-1 )
lengthPerpendicularVector = 1e-1;
perpendicularVector.x = (int) ( (double) perpendicularVector.x *
m_editCenterDistance /
lengthPerpendicularVector ) * m_editDirection;
perpendicularVector.y = (int) ( (double) perpendicularVector.y *
m_editCenterDistance /
lengthPerpendicularVector ) * m_editDirection;
newCenterPoint = middlePoint + perpendicularVector;
m_ArcStart = startPos;
m_ArcEnd = endPos;
}
m_Pos = newCenterPoint;
calcRadiusAngles();
}
else if( m_Flags == IS_NEW )
{
if( m_editState == 1 )
{
m_ArcEnd = aPosition;
}
if( m_editState != m_lastEditState )
m_lastEditState = m_editState;
// Keep the arc center point up to date. Otherwise, there will be edit graphic
// artifacts left behind from the initial draw.
int dx, dy;
int cX, cY;
double angle;
cX = aPosition.x;
cY = aPosition.y;
dx = m_ArcEnd.x - m_ArcStart.x;
dy = m_ArcEnd.y - m_ArcStart.y;
cX -= m_ArcStart.x;
cY -= m_ArcStart.y;
angle = ArcTangente( dy, dx );
RotatePoint( &dx, &dy, angle ); /* The segment dx, dy is horizontal
* -> Length = dx, dy = 0 */
RotatePoint( &cX, &cY, angle );
cX = dx / 2; /* cX, cY is on the median segment 0.0 a dx, 0 */
RotatePoint( &cX, &cY, -angle );
cX += m_ArcStart.x;
cY += m_ArcStart.y;
m_Pos.x = cX;
m_Pos.y = cY;
calcRadiusAngles();
SetEraseLastDrawItem();
}
else if( m_Flags == IS_MOVED )
{
Move( m_initialPos + aPosition - m_initialCursorPos );
}
}
void LIB_ARC::calcRadiusAngles()
{
wxPoint centerStartVector = twoPointVector( m_Pos, m_ArcStart );
wxPoint centerEndVector = twoPointVector( m_Pos, m_ArcEnd );
m_Radius = KiROUND( EuclideanNorm( centerStartVector ) );
// Angles in eeschema are still integers
m_t1 = KiROUND( ArcTangente( centerStartVector.y, centerStartVector.x ) );
m_t2 = KiROUND( ArcTangente( centerEndVector.y, centerEndVector.x ) );
NORMALIZE_ANGLE_POS( m_t1 );
NORMALIZE_ANGLE_POS( m_t2 ); // angles = 0 .. 3600
// Restrict angle to less than 180 to avoid PBS display mirror Trace because it is
// assumed that the arc is less than 180 deg to find orientation after rotate or mirror.
if( (m_t2 - m_t1) > 1800 )
m_t2 -= 3600;
else if( (m_t2 - m_t1) <= -1800 )
m_t2 += 3600;
while( (m_t2 - m_t1) >= 1800 )
{
m_t2--;
m_t1++;
}
while( (m_t1 - m_t2) >= 1800 )
{
m_t2++;
m_t1--;
}
NORMALIZE_ANGLE_POS( m_t1 );
if( !IsMoving() )
NORMALIZE_ANGLE_POS( m_t2 );
}