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[atyndall/cits2231.git] / scene.c

diff --git a/scene.c b/scene.c
index 3a948c8..0219621 100644 (file)
--- a/scene.c
+++ b/scene.c
@@ -464,15 +464,21 @@ 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
+  GLdouble aspect = (GLfloat) h / (GLfloat) w;\r
+  GLdouble n = 10.0;\r
 \r
-  // Calculate The Aspect Ratio Of The Window\r
-  gluPerspective(45.0f,(GLfloat)w/(GLfloat)h,0.1f,100.0f);\r
+  glViewport(0, 0, w, h);\r
 \r
-  glMatrixMode(GL_MODELVIEW);                     // Select The Modelview Matrix\r
-   glLoadIdentity();                           // Reset The Modelview Matrix\r
+  glMatrixMode(GL_PROJECTION); /* switch matrix mode*/\r
+  glLoadIdentity();\r
+\r
+  if (w <= h) {\r
+    gluOrtho2D(-n, n, -n * aspect, n * aspect);\r
+  } else {\r
+    gluOrtho2D(-n * aspect, n * aspect, -n, n);\r
+  }\r
+\r
+  glMatrixMode(GL_MODELVIEW); /* return to modelview mode */\r
 }\r
 \r
 /**\r
@@ -493,10 +499,8 @@ void display() {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);\r
    glLoadIdentity();\r
 \r
-   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