kicad/3d-viewer/3d_canvas.cpp

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/**
* @file 3d_canvas.cpp
*/
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#include "fctsys.h"
#include "trigo.h"
#include "wx/image.h"
#if !wxUSE_GLCANVAS
#error Please set wxUSE_GLCANVAS to 1 in setup.h.
#endif
#include "wx/dataobj.h"
#include "wx/clipbrd.h"
#include <wx/wupdlock.h>
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#include "gestfich.h"
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#include "3d_viewer.h"
#include "trackball.h"
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// -----------------
// helper function (from wxWidgets, opengl/cube.cpp sample
// -----------------
void CheckGLError()
{
GLenum errLast = GL_NO_ERROR;
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for ( ; ; )
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{
GLenum err = glGetError();
if ( err == GL_NO_ERROR )
return;
// normally the error is reset by the call to glGetError() but if
// glGetError() itself returns an error, we risk looping forever here
// so check that we get a different error than the last time
if ( err == errLast )
{
wxLogError(wxT("OpenGL error state couldn't be reset."));
return;
}
errLast = err;
wxLogError(wxT("OpenGL error %d"), err);
}
}
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/*
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* EDA_3D_CANVAS implementation
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*/
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BEGIN_EVENT_TABLE( EDA_3D_CANVAS, wxGLCanvas )
EVT_PAINT( EDA_3D_CANVAS::OnPaint )
// key event:
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EVT_CHAR( EDA_3D_CANVAS::OnChar )
// mouse events
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EVT_RIGHT_DOWN( EDA_3D_CANVAS::OnRightClick )
EVT_MOUSEWHEEL( EDA_3D_CANVAS::OnMouseWheel )
EVT_MOTION( EDA_3D_CANVAS::OnMouseMove )
// other events
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EVT_ERASE_BACKGROUND( EDA_3D_CANVAS::OnEraseBackground )
EVT_MENU_RANGE( ID_POPUP_3D_VIEW_START, ID_POPUP_3D_VIEW_END, EDA_3D_CANVAS::OnPopUpMenu )
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END_EVENT_TABLE()
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EDA_3D_CANVAS::EDA_3D_CANVAS( EDA_3D_FRAME* parent, int* attribList ) :
#if wxCHECK_VERSION( 2, 7, 0 )
wxGLCanvas( parent, -1, attribList, wxDefaultPosition, wxDefaultSize,
wxFULL_REPAINT_ON_RESIZE )
#else
wxGLCanvas( parent, -1, wxDefaultPosition, wxDefaultSize,
wxFULL_REPAINT_ON_RESIZE )
#endif
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{
m_init = false;
m_gllist = 0;
m_Parent = parent;
m_ortho = false;
#if wxCHECK_VERSION( 2, 7, 0 )
// Explicitly create a new rendering context instance for this canvas.
m_glRC = new wxGLContext( this );
#endif
DisplayStatus();
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}
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EDA_3D_CANVAS::~EDA_3D_CANVAS()
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{
ClearLists();
m_init = false;
#if wxCHECK_VERSION( 2, 7, 0 )
delete m_glRC;
#endif
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}
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void EDA_3D_CANVAS::ClearLists()
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{
if( m_gllist > 0 )
glDeleteLists( m_gllist, 1 );
m_gllist = 0;
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}
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void EDA_3D_CANVAS::OnChar( wxKeyEvent& event )
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{
SetView3D( event.GetKeyCode() );
event.Skip();
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}
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void EDA_3D_CANVAS::SetView3D( int keycode )
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{
int ii;
double delta_move = 0.7 * g_Parm_3D_Visu.m_Zoom;
switch( keycode )
{
case WXK_LEFT:
g_Draw3d_dx -= delta_move;
break;
case WXK_RIGHT:
g_Draw3d_dx += delta_move;
break;
case WXK_UP:
g_Draw3d_dy += delta_move;
break;
case WXK_DOWN:
g_Draw3d_dy -= delta_move;
break;
case WXK_HOME:
g_Parm_3D_Visu.m_Zoom = 1.0;
g_Draw3d_dx = g_Draw3d_dy = 0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
break;
case WXK_END:
break;
case WXK_F1:
g_Parm_3D_Visu.m_Zoom /= 1.4;
if( g_Parm_3D_Visu.m_Zoom <= 0.01 )
g_Parm_3D_Visu.m_Zoom = 0.01;
break;
case WXK_F2:
g_Parm_3D_Visu.m_Zoom *= 1.4;
break;
case '+':
break;
case '-':
break;
case 'r':
case 'R':
g_Draw3d_dx = g_Draw3d_dy = 0;
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
break;
case 'x':
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
g_Parm_3D_Visu.m_ROTZ = -90;
g_Parm_3D_Visu.m_ROTX = -90;
break;
case 'X':
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
g_Parm_3D_Visu.m_ROTZ = 90;
g_Parm_3D_Visu.m_ROTX = -90;
break;
case 'y':
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
g_Parm_3D_Visu.m_ROTX = -90;
break;
case 'Y':
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
g_Parm_3D_Visu.m_ROTX = -90;
g_Parm_3D_Visu.m_ROTZ = -180;
break;
case 'z':
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
break;
case 'Z':
for( ii = 0; ii < 4; ii++ )
g_Parm_3D_Visu.m_Rot[ii] = 0.0;
trackball( g_Parm_3D_Visu.m_Quat, 0.0, 0.0, 0.0, 0.0 );
g_Parm_3D_Visu.m_ROTX = -180;
break;
default:
return;
}
DisplayStatus();
Refresh( false );
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}
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void EDA_3D_CANVAS::OnMouseWheel( wxMouseEvent& event )
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{
wxSize size( GetClientSize() );
if( event.ShiftDown() )
{
if( event.GetWheelRotation() < 0 )
{
/* up */
SetView3D( WXK_UP );
}
else
{
/* down */
SetView3D( WXK_DOWN );
}
}
else if( event.ControlDown() )
{
if( event.GetWheelRotation() > 0 )
{
/* right */
SetView3D( WXK_RIGHT );
}
else
{
/* left */
SetView3D( WXK_LEFT );
}
}
else
{
if( event.GetWheelRotation() > 0 )
{
g_Parm_3D_Visu.m_Zoom /= 1.4;
if( g_Parm_3D_Visu.m_Zoom <= 0.01 )
g_Parm_3D_Visu.m_Zoom = 0.01;
}
else
g_Parm_3D_Visu.m_Zoom *= 1.4;
DisplayStatus();
Refresh( false );
}
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g_Parm_3D_Visu.m_Beginx = event.GetX();
g_Parm_3D_Visu.m_Beginy = event.GetY();
}
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void EDA_3D_CANVAS::OnMouseMove( wxMouseEvent& event )
{
wxSize size( GetClientSize() );
double spin_quat[4];
if( event.Dragging() )
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{
if( event.LeftIsDown() )
{
/* drag in progress, simulate trackball */
trackball( spin_quat,
(2.0 * g_Parm_3D_Visu.m_Beginx - size.x) / size.x,
(size.y - 2.0 * g_Parm_3D_Visu.m_Beginy) / size.y,
( 2.0 * event.GetX() - size.x) / size.x,
( size.y - 2.0 * event.GetY() ) / size.y );
add_quats( spin_quat, g_Parm_3D_Visu.m_Quat, g_Parm_3D_Visu.m_Quat );
}
else if( event.MiddleIsDown() )
{
/* middle button drag -> pan */
/* Current zoom and an additional factor are taken into account
* for the amount of panning. */
const double PAN_FACTOR = 8.0 * g_Parm_3D_Visu.m_Zoom;
g_Draw3d_dx -= PAN_FACTOR *
( g_Parm_3D_Visu.m_Beginx - event.GetX() ) / size.x;
g_Draw3d_dy -= PAN_FACTOR *
(event.GetY() - g_Parm_3D_Visu.m_Beginy) / size.y;
}
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/* orientation has changed, redraw mesh */
DisplayStatus();
Refresh( false );
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}
g_Parm_3D_Visu.m_Beginx = event.GetX();
g_Parm_3D_Visu.m_Beginy = event.GetY();
}
/* Construct and display a popup menu when the right button is clicked.
*/
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void EDA_3D_CANVAS::OnRightClick( wxMouseEvent& event )
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{
wxPoint pos;
wxMenu PopUpMenu;
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pos.x = event.GetX();
pos.y = event.GetY();
wxMenuItem* item = new wxMenuItem( &PopUpMenu, ID_POPUP_ZOOMIN, _( "Zoom +" ) );
item->SetBitmap( KiBitmap( zoom_in_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_ZOOMOUT, _( "Zoom -" ) );
item->SetBitmap( KiBitmap( zoom_out_xpm ));
PopUpMenu.Append( item );
PopUpMenu.AppendSeparator();
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_VIEW_ZPOS, _( "Top View" ) );
item->SetBitmap( KiBitmap( axis3d_top_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_VIEW_ZNEG, _( "Bottom View" ) );
item->SetBitmap( KiBitmap( axis3d_bottom_xpm ));
PopUpMenu.Append( item );
PopUpMenu.AppendSeparator();
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_VIEW_XPOS, _( "Right View" ) );
item->SetBitmap( KiBitmap( axis3d_right_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_VIEW_XNEG, _( "Left View" ) );
item->SetBitmap( KiBitmap( axis3d_left_xpm ));
PopUpMenu.Append( item );
PopUpMenu.AppendSeparator();
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_VIEW_YPOS, _( "Front View" ) );
item->SetBitmap( KiBitmap( axis3d_front_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_VIEW_YNEG, _( "Back View" ) );
item->SetBitmap( KiBitmap( axis3d_back_xpm ));
PopUpMenu.Append( item );
PopUpMenu.AppendSeparator();
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_MOVE3D_LEFT, _( "Move left <-" ) );
item->SetBitmap( KiBitmap( left_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_MOVE3D_RIGHT, _( "Move right ->" ) );
item->SetBitmap( KiBitmap( right_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_MOVE3D_UP, _( "Move Up ^" ) );
item->SetBitmap( KiBitmap( up_xpm ));
PopUpMenu.Append( item );
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item = new wxMenuItem( &PopUpMenu, ID_POPUP_MOVE3D_DOWN, _( "Move Down" ) );
item->SetBitmap( KiBitmap( down_xpm ));
PopUpMenu.Append( item );
PopupMenu( &PopUpMenu, pos );
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}
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void EDA_3D_CANVAS::OnPopUpMenu( wxCommandEvent& event )
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{
int key = 0;
switch( event.GetId() )
{
case ID_POPUP_ZOOMIN:
key = WXK_F1;
break;
case ID_POPUP_ZOOMOUT:
key = WXK_F2;
break;
case ID_POPUP_VIEW_XPOS:
key = 'x';
break;
case ID_POPUP_VIEW_XNEG:
key = 'X';
break;
case ID_POPUP_VIEW_YPOS:
key = 'y';
break;
case ID_POPUP_VIEW_YNEG:
key = 'Y';
break;
case ID_POPUP_VIEW_ZPOS:
key = 'z';
break;
case ID_POPUP_VIEW_ZNEG:
key = 'Z';
break;
case ID_POPUP_MOVE3D_LEFT:
key = WXK_LEFT;
break;
case ID_POPUP_MOVE3D_RIGHT:
key = WXK_RIGHT;
break;
case ID_POPUP_MOVE3D_UP:
key = WXK_UP;
break;
case ID_POPUP_MOVE3D_DOWN:
key = WXK_DOWN;
break;
default:
return;
}
SetView3D( key );
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}
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void EDA_3D_CANVAS::DisplayStatus()
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{
wxString msg;
msg.Printf( wxT( "dx %3.2f" ), g_Draw3d_dx );
m_Parent->SetStatusText( msg, 1 );
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msg.Printf( wxT( "dy %3.2f" ), g_Draw3d_dy );
m_Parent->SetStatusText( msg, 2 );
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msg.Printf( wxT( "View: %3.1f" ), 45 * g_Parm_3D_Visu.m_Zoom );
m_Parent->SetStatusText( msg, 3 );
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}
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void EDA_3D_CANVAS::OnPaint( wxPaintEvent& event )
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{
wxPaintDC dc( this );
Redraw();
event.Skip();
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}
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void EDA_3D_CANVAS::OnEraseBackground( wxEraseEvent& event )
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{
// Do nothing, to avoid flashing.
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}
/* Initialize broad parameters for OpenGL */
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void EDA_3D_CANVAS::InitGL()
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{
wxSize size = GetClientSize();
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if( !m_init )
{
m_init = true;
g_Parm_3D_Visu.m_Zoom = 1.0;
ZBottom = 1.0; ZTop = 10.0;
glDisable( GL_CULL_FACE ); // show back faces
glEnable( GL_DEPTH_TEST ); // Enable z-buferring
glEnable( GL_LINE_SMOOTH );
glEnable( GL_COLOR_MATERIAL );
glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE );
/* speedups */
glEnable( GL_DITHER );
glShadeModel( GL_SMOOTH );
glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST );
glHint( GL_POLYGON_SMOOTH_HINT, GL_FASTEST );
/* blend */
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
}
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// set viewing projection
glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
#define MAX_VIEW_ANGLE 160.0 / 45.0
if( g_Parm_3D_Visu.m_Zoom > MAX_VIEW_ANGLE )
g_Parm_3D_Visu.m_Zoom = MAX_VIEW_ANGLE;
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if( ModeIsOrtho() )
{
// OrthoReductionFactor is chosen so as to provide roughly the same size as
// Perspective View
const double orthoReductionFactor = 400 / g_Parm_3D_Visu.m_Zoom;
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// Initialize Projection Matrix for Ortographic View
glOrtho( -size.x / orthoReductionFactor, size.x / orthoReductionFactor,
-size.y / orthoReductionFactor, size.y / orthoReductionFactor, 1, 10 );
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}
else
{
// Ratio width / height of the window display
double ratio_HV = (double) size.x / size.y;
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// Initialize Projection Matrix for Perspective View
gluPerspective( 45.0 * g_Parm_3D_Visu.m_Zoom, ratio_HV, 1, 10 );
}
// position viewer
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glTranslatef( 0.0F, 0.0F, -( ZBottom + ZTop) / 2 );
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// clear color and depth buffers
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glClearColor( g_Parm_3D_Visu.m_BgColor.m_Red,
g_Parm_3D_Visu.m_BgColor.m_Green,
g_Parm_3D_Visu.m_BgColor.m_Blue, 1 );
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glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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// Setup light sources:
SetLights();
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CheckGLError();
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}
/* Initialize OpenGL light sources. */
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void EDA_3D_CANVAS::SetLights()
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{
double light;
GLfloat light_color[4];
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/* set viewing projection */
light_color[3] = 1.0;
GLfloat Z_axis_pos[4] = { 0.0, 0.0, 3.0, 0.0 };
GLfloat lowZ_axis_pos[4] = { 0.0, 0.0, -3.0, 0.5 };
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/* activate light */
light = 1.0;
light_color[0] = light_color[1] = light_color[2] = light;
glLightfv( GL_LIGHT0, GL_POSITION, Z_axis_pos );
glLightfv( GL_LIGHT0, GL_DIFFUSE, light_color );
light = 0.3;
light_color[0] = light_color[1] = light_color[2] = light;
glLightfv( GL_LIGHT1, GL_POSITION, lowZ_axis_pos );
glLightfv( GL_LIGHT1, GL_DIFFUSE, light_color );
glEnable( GL_LIGHT0 ); // White spot on Z axis
glEnable( GL_LIGHT1 ); // White spot on Z axis ( bottom)
glEnable( GL_LIGHTING );
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}
/* Create a Screenshot of the current 3D view.
* Output file format is png or jpeg, or image is copied to the clipboard
*/
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void EDA_3D_CANVAS::TakeScreenshot( wxCommandEvent& event )
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{
wxFileName fn( m_Parent->m_Parent->GetScreen()->GetFileName() );
wxString FullFileName;
wxString file_ext, mask;
bool fmt_is_jpeg = false;
if( event.GetId() == ID_MENU_SCREENCOPY_JPEG )
fmt_is_jpeg = true;
if( event.GetId() != ID_TOOL_SCREENCOPY_TOCLIBBOARD )
{
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file_ext = fmt_is_jpeg ? wxT( "jpg" ) : wxT( "png" );
mask = wxT( "*." ) + file_ext;
FullFileName = m_Parent->m_Parent->GetScreen()->GetFileName();
fn.SetExt( file_ext );
FullFileName = EDA_FileSelector( _( "3D Image filename:" ), wxEmptyString,
fn.GetFullName(), file_ext, mask, this,
wxFD_SAVE, true );
if( FullFileName.IsEmpty() )
return;
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// Be sure the screen area destroyed by the file dialog is redrawn before making
// a screen copy.
// Without this call, under Linux the screen refresh is made to late.
wxYield();
}
struct vieport_params
{
GLint originx;
GLint originy;
GLint x;
GLint y;
} viewport;
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// Build image from the 3D buffer
wxWindowUpdateLocker noUpdates( this );
glGetIntegerv( GL_VIEWPORT, (GLint*) &viewport );
unsigned char* pixelbuffer = (unsigned char*) malloc( viewport.x * viewport.y * 3 );
unsigned char* alphabuffer = (unsigned char*) malloc( viewport.x * viewport.y );
wxImage image( viewport.x, viewport.y );
glPixelStorei( GL_PACK_ALIGNMENT, 1 );
glReadBuffer( GL_BACK_LEFT );
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glReadPixels( viewport.originx, viewport.originy,
viewport.x, viewport.y,
GL_RGB, GL_UNSIGNED_BYTE, pixelbuffer );
glReadPixels( viewport.originx, viewport.originy,
viewport.x, viewport.y,
GL_ALPHA, GL_UNSIGNED_BYTE, alphabuffer );
image.SetData( pixelbuffer );
image.SetAlpha( alphabuffer );
image = image.Mirror( false );
wxBitmap bitmap( image );
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if( event.GetId() == ID_TOOL_SCREENCOPY_TOCLIBBOARD )
{
wxBitmapDataObject* dobjBmp = new wxBitmapDataObject;
dobjBmp->SetBitmap( bitmap );
if( wxTheClipboard->Open() )
{
if( !wxTheClipboard->SetData( dobjBmp ) )
wxMessageBox( _( "Failed to copy image to clipboard" ) );
wxTheClipboard->Flush(); /* the data in clipboard will stay
* available after the
* application exits */
wxTheClipboard->Close();
}
}
else
{
wxImage image = bitmap.ConvertToImage();
if( !image.SaveFile( FullFileName,
fmt_is_jpeg ? wxBITMAP_TYPE_JPEG : wxBITMAP_TYPE_PNG ) )
wxMessageBox( _( "Can't save file" ) );
2007-05-06 16:03:28 +00:00
image.Destroy();
}
}