373 lines
12 KiB
C++
373 lines
12 KiB
C++
/*
|
|
* This program source code file is part of KICAD, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de
|
|
* Copyright (C) 2012 Kicad Developers, see change_log.txt for contributors.
|
|
* Copyright (C) 2013 CERN
|
|
* @author Maciej Suminski <maciej.suminski@cern.ch>
|
|
*
|
|
* Graphics Abstraction Layer (GAL) for OpenGL
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef OPENGLGAL_H_
|
|
#define OPENGLGAL_H_
|
|
|
|
// GAL imports
|
|
#include <gal/graphics_abstraction_layer.h>
|
|
#include <gal/opengl/shader.h>
|
|
#include <gal/opengl/vertex_manager.h>
|
|
#include <gal/opengl/vertex_item.h>
|
|
#include <gal/opengl/noncached_container.h>
|
|
#include <gal/opengl/opengl_compositor.h>
|
|
|
|
#include <wx/wx.h>
|
|
#include <wx/glcanvas.h>
|
|
|
|
#include <cmath>
|
|
#include <iterator>
|
|
#include <vector>
|
|
#include <algorithm>
|
|
#include <memory>
|
|
#include <map>
|
|
#include <boost/smart_ptr/shared_ptr.hpp>
|
|
#include <boost/smart_ptr/shared_array.hpp>
|
|
|
|
#include <stdlib.h>
|
|
#include <iostream>
|
|
#include <fstream>
|
|
|
|
#ifndef CALLBACK
|
|
#define CALLBACK
|
|
#endif
|
|
|
|
namespace KIGFX
|
|
{
|
|
class SHADER;
|
|
|
|
/**
|
|
* @brief Class OpenGL_GAL is the OpenGL implementation of the Graphics Abstraction Layer.
|
|
*
|
|
* This is a direct OpenGL-implementation and uses low-level graphics primitives like triangles
|
|
* and quads. The purpuse is to provide a fast graphics interface, that takes advantage of modern
|
|
* graphics card GPUs. All methods here benefit thus from the hardware acceleration.
|
|
*/
|
|
class OPENGL_GAL : public GAL, public wxGLCanvas
|
|
{
|
|
public:
|
|
|
|
/**
|
|
* @brief Constructor OPENGL_GAL
|
|
*
|
|
* @param aParent is the wxWidgets immediate wxWindow parent of this object.
|
|
*
|
|
* @param aMouseListener is the wxEvtHandler that should receive the mouse events,
|
|
* this can be can be any wxWindow, but is often a wxFrame container.
|
|
*
|
|
* @param aPaintListener is the wxEvtHandler that should receive the paint
|
|
* event. This can be any wxWindow, but is often a derived instance
|
|
* of this class or a containing wxFrame. The "paint event" here is
|
|
* a wxCommandEvent holding EVT_GAL_REDRAW, as sent by PostPaint().
|
|
*
|
|
* @param aName is the name of this window for use by wxWindow::FindWindowByName()
|
|
*/
|
|
OPENGL_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener = NULL,
|
|
wxEvtHandler* aPaintListener = NULL, const wxString& aName = wxT( "GLCanvas" ) );
|
|
|
|
virtual ~OPENGL_GAL();
|
|
|
|
// ---------------
|
|
// Drawing methods
|
|
// ---------------
|
|
|
|
/// @copydoc GAL::BeginDrawing()
|
|
virtual void BeginDrawing();
|
|
|
|
/// @copydoc GAL::EndDrawing()
|
|
virtual void EndDrawing();
|
|
|
|
/// @copydoc GAL::DrawLine()
|
|
virtual void DrawLine( const VECTOR2D& aStartPoint, const VECTOR2D& aEndPoint );
|
|
|
|
/// @copydoc GAL::DrawSegment()
|
|
virtual void DrawSegment( const VECTOR2D& aStartPoint, const VECTOR2D& aEndPoint,
|
|
double aWidth );
|
|
|
|
/// @copydoc GAL::DrawCircle()
|
|
virtual void DrawCircle( const VECTOR2D& aCenterPoint, double aRadius );
|
|
|
|
/// @copydoc GAL::DrawArc()
|
|
virtual void DrawArc( const VECTOR2D& aCenterPoint, double aRadius,
|
|
double aStartAngle, double aEndAngle );
|
|
|
|
/// @copydoc GAL::DrawRectangle()
|
|
virtual void DrawRectangle( const VECTOR2D& aStartPoint, const VECTOR2D& aEndPoint );
|
|
|
|
/// @copydoc GAL::DrawPolyline()
|
|
virtual void DrawPolyline( std::deque<VECTOR2D>& aPointList );
|
|
|
|
/// @copydoc GAL::DrawPolygon()
|
|
virtual void DrawPolygon( const std::deque<VECTOR2D>& aPointList );
|
|
|
|
/// @copydoc GAL::DrawCurve()
|
|
virtual void DrawCurve( const VECTOR2D& startPoint, const VECTOR2D& controlPointA,
|
|
const VECTOR2D& controlPointB, const VECTOR2D& endPoint );
|
|
|
|
// --------------
|
|
// Screen methods
|
|
// --------------
|
|
|
|
/// @brief Resizes the canvas.
|
|
virtual void ResizeScreen( int aWidth, int aHeight );
|
|
|
|
/// @brief Shows/hides the GAL canvas
|
|
virtual bool Show( bool aShow );
|
|
|
|
/// @copydoc GAL::Flush()
|
|
virtual void Flush();
|
|
|
|
/// @copydoc GAL::ClearScreen()
|
|
virtual void ClearScreen( const COLOR4D& aColor );
|
|
|
|
// --------------
|
|
// Transformation
|
|
// --------------
|
|
|
|
/// @copydoc GAL::Transform()
|
|
virtual void Transform( const MATRIX3x3D& aTransformation );
|
|
|
|
/// @copydoc GAL::Rotate()
|
|
virtual void Rotate( double aAngle );
|
|
|
|
/// @copydoc GAL::Translate()
|
|
virtual void Translate( const VECTOR2D& aTranslation );
|
|
|
|
/// @copydoc GAL::Scale()
|
|
virtual void Scale( const VECTOR2D& aScale );
|
|
|
|
/// @copydoc GAL::Save()
|
|
virtual void Save();
|
|
|
|
/// @copydoc GAL::Restore()
|
|
virtual void Restore();
|
|
|
|
// --------------------------------------------
|
|
// Group methods
|
|
// ---------------------------------------------
|
|
|
|
/// @copydoc GAL::BeginGroup()
|
|
virtual int BeginGroup();
|
|
|
|
/// @copydoc GAL::EndGroup()
|
|
virtual void EndGroup();
|
|
|
|
/// @copydoc GAL::DrawGroup()
|
|
virtual void DrawGroup( int aGroupNumber );
|
|
|
|
/// @copydoc GAL::ChangeGroupColor()
|
|
virtual void ChangeGroupColor( int aGroupNumber, const COLOR4D& aNewColor );
|
|
|
|
/// @copydoc GAL::ChangeGroupDepth()
|
|
virtual void ChangeGroupDepth( int aGroupNumber, int aDepth );
|
|
|
|
/// @copydoc GAL::DeleteGroup()
|
|
virtual void DeleteGroup( int aGroupNumber );
|
|
|
|
/// @copydoc GAL::ClearCache()
|
|
virtual void ClearCache();
|
|
|
|
// --------------------------------------------------------
|
|
// Handling the world <-> screen transformation
|
|
// --------------------------------------------------------
|
|
|
|
/// @copydoc GAL::SaveScreen()
|
|
virtual void SaveScreen();
|
|
|
|
/// @copydoc GAL::RestoreScreen()
|
|
virtual void RestoreScreen();
|
|
|
|
/// @copydoc GAL::SetTarget()
|
|
virtual void SetTarget( RENDER_TARGET aTarget );
|
|
|
|
/// @copydoc GAL::GetTarget()
|
|
virtual RENDER_TARGET GetTarget() const;
|
|
|
|
/// @copydoc GAL::ClearTarget()
|
|
virtual void ClearTarget( RENDER_TARGET aTarget );
|
|
|
|
// -------
|
|
// Cursor
|
|
// -------
|
|
|
|
/// @copydoc GAL::DrawCursor()
|
|
virtual void DrawCursor( const VECTOR2D& aCursorPosition );
|
|
|
|
/**
|
|
* @brief Function PostPaint
|
|
* posts an event to m_paint_listener. A post is used so that the actual drawing
|
|
* function can use a device context type that is not specific to the wxEVT_PAINT event.
|
|
*/
|
|
void PostPaint()
|
|
{
|
|
if( paintListener )
|
|
{
|
|
wxPaintEvent redrawEvent;
|
|
wxPostEvent( paintListener, redrawEvent );
|
|
}
|
|
}
|
|
|
|
void SetMouseListener( wxEvtHandler* aMouseListener )
|
|
{
|
|
mouseListener = aMouseListener;
|
|
}
|
|
|
|
void SetPaintListener( wxEvtHandler* aPaintListener )
|
|
{
|
|
paintListener = aPaintListener;
|
|
}
|
|
|
|
///< Parameters passed to the GLU tesselator
|
|
typedef struct
|
|
{
|
|
/// Manager used for storing new vertices
|
|
VERTEX_MANAGER* vboManager;
|
|
|
|
/// Intersect points, that have to be freed after tessellation
|
|
std::deque< boost::shared_array<GLdouble> >& intersectPoints;
|
|
} TessParams;
|
|
|
|
protected:
|
|
virtual void drawGridLine( const VECTOR2D& aStartPoint, const VECTOR2D& aEndPoint );
|
|
|
|
private:
|
|
/// Super class definition
|
|
typedef GAL super;
|
|
|
|
static const int CIRCLE_POINTS = 64; ///< The number of points for circle approximation
|
|
static const int CURVE_POINTS = 32; ///< The number of points for curve approximation
|
|
|
|
wxClientDC* clientDC; ///< Drawing context
|
|
wxGLContext* glContext; ///< OpenGL context of wxWidgets
|
|
wxWindow* parentWindow; ///< Parent window
|
|
wxEvtHandler* mouseListener;
|
|
wxEvtHandler* paintListener;
|
|
|
|
// Vertex buffer objects related fields
|
|
typedef std::map< unsigned int, boost::shared_ptr<VERTEX_ITEM> > GROUPS_MAP;
|
|
GROUPS_MAP groups; ///< Stores informations about VBO objects (groups)
|
|
unsigned int groupCounter; ///< Counter used for generating keys for groups
|
|
VERTEX_MANAGER* currentManager; ///< Currently used VERTEX_MANAGER (for storing VERTEX_ITEMs)
|
|
VERTEX_MANAGER cachedManager; ///< Container for storing cached VERTEX_ITEMs
|
|
VERTEX_MANAGER nonCachedManager; ///< Container for storing non-cached VERTEX_ITEMs
|
|
VERTEX_MANAGER overlayManager; ///< Container for storing overlaid VERTEX_ITEMs
|
|
|
|
// Framebuffer & compositing
|
|
OPENGL_COMPOSITOR compositor; ///< Handles multiple rendering targets
|
|
unsigned int mainBuffer; ///< Main rendering target
|
|
unsigned int overlayBuffer; ///< Auxiliary rendering target (for menus etc.)
|
|
RENDER_TARGET currentTarget; ///< Current rendering target
|
|
|
|
// Shader
|
|
SHADER shader; ///< There is only one shader used for different objects
|
|
|
|
// Internal flags
|
|
bool isGlewInitialized; ///< Is GLEW initialized?
|
|
bool isFramebufferInitialized; ///< Are the framebuffers initialized?
|
|
bool isShaderInitialized; ///< Was the shader initialized?
|
|
bool isGrouping; ///< Was a group started?
|
|
|
|
// Polygon tesselation
|
|
/// The tessellator
|
|
GLUtesselator* tesselator;
|
|
/// Storage for intersecting points
|
|
std::deque< boost::shared_array<GLdouble> > tessIntersects;
|
|
|
|
/**
|
|
* @brief Draw a quad for the line.
|
|
*
|
|
* @param aStartPoint is the start point of the line.
|
|
* @param aEndPoint is the end point of the line.
|
|
*/
|
|
void drawLineQuad( const VECTOR2D& aStartPoint, const VECTOR2D& aEndPoint );
|
|
|
|
/**
|
|
* @brief Draw a semicircle. Depending on settings (isStrokeEnabled & isFilledEnabled) it runs
|
|
* the proper function (drawStrokedSemiCircle or drawFilledSemiCircle).
|
|
*
|
|
* @param aCenterPoint is the center point.
|
|
* @param aRadius is the radius of the semicircle.
|
|
* @param aAngle is the angle of the semicircle.
|
|
*
|
|
*/
|
|
void drawSemiCircle( const VECTOR2D& aCenterPoint, double aRadius, double aAngle );
|
|
|
|
/**
|
|
* @brief Draw a filled semicircle.
|
|
*
|
|
* @param aCenterPoint is the center point.
|
|
* @param aRadius is the radius of the semicircle.
|
|
* @param aAngle is the angle of the semicircle.
|
|
*
|
|
*/
|
|
void drawFilledSemiCircle( const VECTOR2D& aCenterPoint, double aRadius, double aAngle );
|
|
|
|
/**
|
|
* @brief Draw a stroked semicircle.
|
|
*
|
|
* @param aCenterPoint is the center point.
|
|
* @param aRadius is the radius of the semicircle.
|
|
* @param aAngle is the angle of the semicircle.
|
|
*
|
|
*/
|
|
void drawStrokedSemiCircle( const VECTOR2D& aCenterPoint, double aRadius, double aAngle );
|
|
|
|
// Event handling
|
|
/**
|
|
* @brief This is the OnPaint event handler.
|
|
*
|
|
* @param aEvent is the OnPaint event.
|
|
*/
|
|
void onPaint( wxPaintEvent& aEvent );
|
|
|
|
/**
|
|
* @brief Skip the mouse event to the parent.
|
|
*
|
|
* @param aEvent is the mouse event.
|
|
*/
|
|
void skipMouseEvent( wxMouseEvent& aEvent );
|
|
|
|
/// Initialize GLEW
|
|
void initGlew();
|
|
|
|
/**
|
|
* @brief Blits cursor into the current screen.
|
|
*/
|
|
void blitCursor();
|
|
|
|
/**
|
|
* @brief Returns a valid key that can be used as a new group number.
|
|
*
|
|
* @return An unique group number that is not used by any other group.
|
|
*/
|
|
unsigned int getNewGroupNumber();
|
|
};
|
|
} // namespace KIGFX
|
|
|
|
#endif // OPENGLGAL_H_
|