+/*
+ * Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
#include "graphics.h"
+#include "debug.h"
#include <GL/gl.h>
#include <GL/glu.h>
#include <SDL/SDL.h>
#include <cmath>
-#include "../debug.h"
+#include "mathw.h"
+
+#include <iostream>
+using std::cerr;
+using std::cout;
+using std::endl;
-static const float PI = 3.1415926535897;
/// ***** Private Method Headers *****
-void drawCircle(int);
+
+void glDrawCircle(int);
+void glDrawPolygon( const std::vector<Vector2>& points );
void sdlInit();
void glInit();
-/// ***** Public Methods *****
+/// ***** Initializers/Cleaners *****
-void graphicsInit()
+void graphics::init()
{
sdlInit();
glInit();
}
-void graphicsCleanUp()
+void graphics::clean()
{
}
-void glDrawCircle(float radius, const Vector2& vec, const float* color)
+/// ***** Public Methods *****
+
+void graphics::drawCircle(float radius, const Vector2& pos, const float* color)
{
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
- glTranslatef(vec.x, vec.y, -1);
+ glTranslatef(pos.x, pos.y, -1);
glScalef(radius, radius, radius);
if(color != NULL)
glColor3fv(color);
- drawCircle(32);
+ glDrawCircle(32);
+}
+
+void graphics::drawPolygon
+(
+ const std::vector<Vector2>& points,
+ const float* color
+)
+{
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+ if(color != NULL)
+ glColor3fv(color);
+
+ glDrawPolygon(points);
}
/// ***** Private Methods *****
-void drawCircle(int pieces)
+void glDrawCircle(int pieces)
{
glBegin(GL_POLYGON);
for(int n = 0; n < pieces; n++)
glEnd();
}
+void glDrawPolygon( const std::vector<Vector2>& points )
+{
+ glBegin(GL_POLYGON);
+ for(unsigned int n = 0; n < points.size(); n++)
+ {
+ const Vector2& vec = points.at(n);
+
+ glVertex3f(vec.x, vec.y, 0);
+ }
+ glEnd();
+}
+
void sdlInit()
{
if(SDL_Init(SDL_INIT_VIDEO) < 0)
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
+
+ // anti aliasing?
+ /*
+ glEnable(GL_BLEND);
+ glEnable(GL_POLYGON_SMOOTH_HINT);
+
+ glBlendFunc(GL_SRC_ALPHA_SATURATE, GL_ONE);
+
+ glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
+ */
}