116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
// RenderArea2D.hxx - a class to manage 2D polygon-based drawing
|
|
// for a complex instrument (eg. GPS).
|
|
//
|
|
// Written by David Luff, started 2005.
|
|
//
|
|
// Copyright (C) 2005 - David C Luff - daveluff AT ntlworld.com
|
|
//
|
|
// 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, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
//
|
|
// $Id$
|
|
|
|
#ifndef _RENDER_AREA_2D
|
|
#define _RENDER_AREA_2D
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <osg/ref_ptr>
|
|
#include <osg/State>
|
|
#include <osg/StateSet>
|
|
|
|
#include <simgear/compiler.h>
|
|
#include <simgear/math/SGMath.hxx>
|
|
|
|
#include <vector>
|
|
|
|
using std::vector;
|
|
|
|
enum RA2DDrawingType {
|
|
RA2D_LINE,
|
|
RA2D_QUAD,
|
|
RA2D_PIXEL
|
|
};
|
|
|
|
struct RA2DPrimitive {
|
|
RA2DPrimitive();
|
|
|
|
RA2DDrawingType type;
|
|
int x1, y1, x2, y2;
|
|
bool invert;
|
|
bool debug;
|
|
};
|
|
|
|
class RenderArea2D {
|
|
|
|
public:
|
|
RenderArea2D(int logx, int logy, int sizex, int sizey, int posx, int posy);
|
|
~RenderArea2D();
|
|
|
|
void SetPixelColor(const float* rgba);
|
|
void SetBackgroundColor(const float* rgba);
|
|
void SetPosition(int posx, int posy);
|
|
void SetLogicalSize(int logx, int logy);
|
|
void SetActualSize(int sizex, int sizey);
|
|
|
|
// Set clipping region in logical units
|
|
void SetClipRegion(int x1, int y1, int x2, int y2);
|
|
// Set clip region to be the same as the rendered area (default)
|
|
void ResetClipRegion();
|
|
|
|
// The DrawXXX functions place the shapes in the buffer, specified
|
|
// in logical units, and clipped to the current clip region.
|
|
void DrawPixel(int x, int y, bool invert = false);
|
|
void DrawLine(int x1, int y1, int x2, int y2);
|
|
void DrawQuad(int x1, int y1, int x2, int y2, bool invert = false);
|
|
void DrawBackground();
|
|
|
|
// Call Draw to have the buffer contents drawn and then cleared.
|
|
void Draw(osg::State& state);
|
|
|
|
// Clear the buffer contents
|
|
void Flush();
|
|
|
|
// Turn debugging on or off.
|
|
inline void SetDebugging(bool b) { _ra2d_debug = b; }
|
|
|
|
private:
|
|
int _logx, _logy; // logical size of rendered area
|
|
int _sizex, _sizey; // Actual size of rendered area
|
|
int _posx, _posy; // Position of rendered area
|
|
int _clipx1, _clipx2, _clipy1, _clipy2; // Current clipping region in *logical* units
|
|
|
|
float _backgroundColor[4];
|
|
float _pixelColor[4];
|
|
|
|
// Drawing specified in logical units
|
|
void DoDrawPixel(int x, int y, bool invert = false);
|
|
void DoDrawLine(int x1, int y1, int x2, int y2);
|
|
void DoDrawQuad(int x1, int y1, int x2, int y2, bool invert = false);
|
|
void DoDrawBackground();
|
|
|
|
// Actual rendering routines copied from Atlas
|
|
void SetRenderColor( const float *rgb );
|
|
void RenderQuad( const SGVec2f *p);
|
|
void RenderQuad( const SGVec2f *p, const SGVec4f *color );
|
|
|
|
vector<RA2DPrimitive> drawing_list;
|
|
|
|
// Control whether to output debugging output
|
|
bool _ra2d_debug;
|
|
};
|
|
|
|
#endif
|