X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=scene.c;h=79c506e416821bcdccd30f3d0ad5cde31c8e235a;hb=79f4b6e1d83d5ec50cfac2f71487bd9d07d8fc8e;hp=963f78bec7032ce6f465cc73d5a5f5382a3e08ae;hpb=db2ce035b0f1f0c957ce8dbf998a45b799b8aa29;p=atyndall%2Fcits2231.git

diff --git a/scene.c b/scene.c
index 963f78b..79c506e 100644
--- a/scene.c
+++ b/scene.c
@@ -491,6 +491,42 @@ void mouse(int btn, int state, int x, int y) {
   
 }
 
+static GLfloat floorVertices[4][3] = {
+  { -20.0, 0.0, 20.0 },
+  { 20.0, 0.0, 20.0 },
+  { 20.0, 0.0, -20.0 },
+  { -20.0, 0.0, -20.0 },
+};
+
+/* Draw a floor (possibly textured). */
+static void
+drawFloor(void)
+{
+  glDisable(GL_LIGHTING);
+
+  //if (useTexture) {
+  //  glEnable(GL_TEXTURE_2D);
+  //}
+
+  glBegin(GL_QUADS);
+    glTexCoord2f(0.0, 0.0);
+    glVertex3fv(floorVertices[0]);
+    glTexCoord2f(0.0, 16.0);
+    glVertex3fv(floorVertices[1]);
+    glTexCoord2f(16.0, 16.0);
+    glVertex3fv(floorVertices[2]);
+    glTexCoord2f(16.0, 0.0);
+    glVertex3fv(floorVertices[3]);
+  glEnd();
+
+  /*if (useTexture) {
+    glDisable(GL_TEXTURE_2D);
+  }*/
+
+  glEnable(GL_LIGHTING);
+}
+
+
 /**
  * Display function
  */
@@ -498,28 +534,39 @@ void display() {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity();
 
-   glTranslatef( 0.0f,  0.0f,  0.0f);
+   /*glTranslatef( 0.0f,  0.0f,  0.0f);
    glBegin(GL_QUADS);
      glVertex3f( 0.0f,  1.0f, -1.0f);
      glVertex3f( 0.0f,  1.0f,  1.0f);
      glVertex3f( 0.0f, -1.0f,  1.0f);
      glVertex3f( 0.0f, -1.0f, -1.0f);
-   glEnd();
+   glEnd();*/
 
 
    glTranslatef( 0.0f, 0.0f, -5.0f); // Move into the Screen 10.0
    glutSolidTeapot(1);
 
-   glMatrixMode(GL_MODELVIEW);
+  /* glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(0.7f, 0.4f, 0.9f, -2.0f, -1.0f, -7.0f, 1.0f, 10.0f, 1.0f);
 
 
    glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
+  glLoadIdentity();*/
+   drawFloor();
    glutSwapBuffers();
 }
 
+/**
+ * init function, sets OpenGL's starting state
+ */
+void init() {
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  gluPerspective( 60, 1, 0.1, 1000.0);
+  glMatrixMode(GL_MODELVIEW);
+}
+
 /**
  * Main function
  * @param argc Number of arguments
@@ -559,10 +606,16 @@ int main(int argc, char **argv) {
 
     makeMenu();
 
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-    gluPerspective( 60, 1, 0.1, 1000.0);
-    glMatrixMode(GL_MODELVIEW);
+    init();
+
+     glMatrixMode(GL_PROJECTION);
+  gluPerspective( /* field of view in degree */ 40.0,
+  /* aspect ratio */ 1.0,
+    /* Z near */ 20.0, /* Z far */ 100.0);
+  glMatrixMode(GL_MODELVIEW);
+  gluLookAt(0.0, 8.0, 60.0,  /* eye is at (0,8,60) */
+    0.0, 8.0, 0.0,      /* center is at (0,8,0) */
+    0.0, 1.0, 0.);      /* up is in postivie Y direction */
 
     glutMainLoop();
 }