115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
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// RenderArea2D.hxx - a class to manage 2D polygon-based drawing
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// for a complex instrument (eg. GPS).
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//
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// Written by David Luff, started 2005.
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//
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// Copyright (C) 2005 - David C Luff - david.luff@nottingham.ac.uk
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#ifndef _RENDER_AREA_2D
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#define _RENDER_AREA_2D
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <simgear/compiler.h>
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#include <plib/ssg.h>
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#include <vector>
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SG_USING_STD(vector);
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enum RA2DDrawingType {
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RA2D_LINE,
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RA2D_QUAD,
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RA2D_PIXEL
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};
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struct RA2DPrimitive {
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RA2DPrimitive();
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RA2DDrawingType type;
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int x1, y1, x2, y2;
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bool invert;
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bool debug;
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};
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class RenderArea2D {
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public:
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RenderArea2D(int logx, int logy, int sizex, int sizey, int posx, int posy);
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~RenderArea2D();
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void draw();
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void SetPixelColor(const float* rgba);
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void SetBackgroundColor(const float* rgba);
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void SetPosition(int posx, int posy);
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void SetLogicalSize(int logx, int logy);
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void SetActualSize(int sizex, int sizey);
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// Set clipping region in logical units
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void SetClipRegion(int x1, int y1, int x2, int y2);
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// Set clip region to be the same as the rendered area (default)
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void ResetClipRegion();
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// Drawing specified in logical units
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void DrawLine(int x1, int y1, int x2, int y2);
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void DrawQuad(int x1, int y1, int x2, int y2, bool invert = false);
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void DrawBackground();
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// Draw a pixel specified by *logical* position
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void DrawPixel(int x, int y, bool invert = false);
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// The old drawing functions have been renamed in order to buffer the drawing for FG
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//
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// Drawing specified in logical units
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void oldDrawLine(int x1, int y1, int x2, int y2);
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void oldDrawQuad(int x1, int y1, int x2, int y2, bool invert = false);
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void oldDrawBackground();
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// Draw a pixel specified by *logical* position
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void oldDrawPixel(int x, int y, bool invert = false);
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// Flush the buffer pipeline
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void Flush();
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// Turn debugging on or off.
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inline void SetDebugging(bool b) { _ra2d_debug = b; }
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private:
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int _logx, _logy; // logical size of rendered area
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int _sizex, _sizey; // Actual size of rendered area
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int _posx, _posy; // Position of rendered area
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int _clipx1, _clipx2, _clipy1, _clipy2; // Current clipping region in *logical* units
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float _backgroundColor[4];
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float _pixelColor[4];
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// Actual drawing routines copied from Atlas
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void doSetColor( const float *rgb );
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void doDrawQuad( const sgVec2 *p, const sgVec3 *normals );
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void doDrawQuad( const sgVec2 *p, const sgVec3 *normals, const sgVec4 *color );
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vector<RA2DPrimitive> drawing_list;
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// Control whether to output debugging output
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bool _ra2d_debug;
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};
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#endif
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