130 lines
3.5 KiB
C++
130 lines
3.5 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined ( INCLUDED_XORRECTANGLE_H )
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#define INCLUDED_XORRECTANGLE_H
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#include <gtk/gtkwidget.h>
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#include "math/vector.h"
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#include "gtkutil/glwidget.h"
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#include "igl.h"
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#include <gtk/gtkglwidget.h>
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//#include "stream/stringstream.h"
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class rectangle_t
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{
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public:
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rectangle_t()
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: x( 0 ), y( 0 ), w( 0 ), h( 0 )
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{}
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rectangle_t( float _x, float _y, float _w, float _h )
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: x( _x ), y( _y ), w( _w ), h( _h )
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{}
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float x;
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float y;
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float w;
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float h;
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};
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struct Coord2D
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{
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float x, y;
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Coord2D( float _x, float _y )
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: x( _x ), y( _y ){
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}
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};
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inline Coord2D coord2d_device2screen( const Coord2D& coord, unsigned int width, unsigned int height ){
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return Coord2D( ( ( coord.x + 1.0f ) * 0.5f ) * width, ( ( coord.y + 1.0f ) * 0.5f ) * height );
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}
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inline rectangle_t rectangle_from_area( const float min[2], const float max[2], unsigned int width, unsigned int height ){
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Coord2D botleft( coord2d_device2screen( Coord2D( min[0], min[1] ), width, height ) );
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Coord2D topright( coord2d_device2screen( Coord2D( max[0], max[1] ), width, height ) );
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return rectangle_t( botleft.x, botleft.y, topright.x - botleft.x, topright.y - botleft.y );
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}
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class XORRectangle {
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public:
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XORRectangle() {
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}
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~XORRectangle() {
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}
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void set( rectangle_t rectangle, int width, int height ) {
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if( rectangle.w != 0.f && rectangle.h != 0.f ) {
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GlobalOpenGL_debugAssertNoErrors();
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glViewport( 0, 0, width, height );
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// set up viewpoint
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glOrtho( 0, width, 0, height, -100, 100 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
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glDisable( GL_DEPTH_TEST );
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glDisable( GL_TEXTURE_2D );
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if( GlobalOpenGL().GL_1_3() ) {
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glDisable( GL_MULTISAMPLE );
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}
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glEnable( GL_BLEND );
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glBlendFunc( GL_ONE, GL_ONE );
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//glColor4f( 0.94902f / 5.f, 0.396078f / 5.f, 0.133333f / 5.f, .2f );
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glColor3f( 1.f / 10.f, .5f / 10.f, 0.f );
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glBegin( GL_QUADS );
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glVertex2f( rectangle.x, rectangle.y + rectangle.h );
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glVertex2f( rectangle.x + rectangle.w, rectangle.y + rectangle.h );
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glVertex2f( rectangle.x + rectangle.w, rectangle.y );
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glVertex2f( rectangle.x, rectangle.y );
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glEnd();
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glDisable( GL_BLEND );
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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glLineWidth( 1 );
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//glColor3f( 0.94902f, 0.396078f, 0.133333f );
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glColor3f( 1.f, .5f, 0.f );
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glBegin( GL_LINE_LOOP );
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glVertex2f( rectangle.x, rectangle.y + rectangle.h );
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glVertex2f( rectangle.x + rectangle.w, rectangle.y + rectangle.h );
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glVertex2f( rectangle.x + rectangle.w, rectangle.y );
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glVertex2f( rectangle.x, rectangle.y );
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glEnd();
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GlobalOpenGL_debugAssertNoErrors();
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}
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}
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};
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#endif
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