(no commit message)
authorAsh Tyndall <[email protected]>
Sun, 9 Oct 2011 06:45:10 +0000 (14:45 +0800)
committerAsh Tyndall <[email protected]>
Sun, 9 Oct 2011 06:45:10 +0000 (14:45 +0800)
scene.c

diff --git a/scene.c b/scene.c
index e7becbf..f899dd8 100644 (file)
--- a/scene.c
+++ b/scene.c
@@ -464,15 +464,14 @@ void makeMenu() {
  * @param h New height\r
  */\r
 void windowReshape(int w, int h) {\r
-  glViewport(0, 0, w, h);                    // Reset The Current Viewport\r
-  glMatrixMode(GL_PROJECTION);                        // Select The Projection Matrix\r
-  glLoadIdentity();                           // Reset The Projection Matrix\r
-\r
-  // Calculate The Aspect Ratio Of The Window\r
-  gluPerspective(45.0f,(GLfloat)w/(GLfloat)h,0.1f,100.0f);\r
-\r
-  glMatrixMode(GL_MODELVIEW);                     // Select The Modelview Matrix\r
-   glLoadIdentity();                           // Reset The Modelview Matrix\r
+    glViewport(0, 0, w, h);\r
+    glMatrixMode(GL_PROJECTION); /* switch matrix mode */\r
+    glLoadIdentity();\r
+    if (w <= h)\r
+      gluOrtho2D(-2.0, 2.0, -2.0 * (GLfloat) h / (GLfloat) w, 2.0 * (GLfloat) h / (GLfloat) w);\r
+    else\r
+      gluOrtho2D(-2.0 * (GLfloat) w / (GLfloat) h, 2.0 * (GLfloat) w / (GLfloat) h, -2.0, 2.0);\r
+    glMatrixMode(GL_MODELVIEW); /* return to modelview mode */\r
 }\r
 \r
 /**\r
@@ -496,7 +495,7 @@ void display() {
    glTranslatef(-1.5f, 0.0f, -6.0f);\r
 \r
    glBegin(GL_QUADS);\r
-     glColor3f(1.0f,0.0f,0.0f);          // Set The Color To Red\r
+     glColor3f(1.0f,0.0f,0.0f);     // Set The Color To Red\r
      glVertex3f(-1.0f, 1.0f, 0.0f); // Top left\r
      glVertex3f( 1.0f, 1.0f, 0.0f); // Top Right\r
      glVertex3f( 1.0f,-1.0f, 0.0f); // Bottom Right\r
@@ -539,8 +538,6 @@ int main(int argc, char **argv) {
 \r
     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);          // Really Nice Perspective Calculations\r
 \r
-    glutSwapBuffers();\r
-\r
     glutReshapeFunc(windowReshape);\r
     glutDisplayFunc(display);\r
     glutMouseFunc(mouse);\r

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