X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=scene.c;h=638683e95c05a4d7fb817c282d537057b32aefac;hb=a94c1e2ec02ba03c8f7c4dee751f2eded3203b8f;hp=79c506e416821bcdccd30f3d0ad5cde31c8e235a;hpb=79f4b6e1d83d5ec50cfac2f71487bd9d07d8fc8e;p=atyndall%2Fcits2231.git

diff --git a/scene.c b/scene.c
index 79c506e..638683e 100644
--- a/scene.c
+++ b/scene.c
@@ -527,6 +527,11 @@ drawFloor(void)
 }
 
 
+static GLfloat lightColor[] = {0.8, 1.0, 0.8, 1.0}; /* green-tinted */
+static GLfloat lightPosition[4];
+static float lightAngle = 0.0, lightHeight = 20;
+
+
 /**
  * Display function
  */
@@ -543,8 +548,8 @@ void display() {
    glEnd();*/
 
 
-   glTranslatef( 0.0f, 0.0f, -5.0f); // Move into the Screen 10.0
-   glutSolidTeapot(1);
+   //glTranslatef( 0.0f, 0.0f, -5.0f); // Move into the Screen 10.0
+   //glutSolidTeapot(1);
 
   /* glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
@@ -553,19 +558,51 @@ void display() {
 
    glMatrixMode(GL_PROJECTION);
   glLoadIdentity();*/
+
+
+   /* Reposition the light source. */
+  lightPosition[0] = 12*cos(lightAngle);
+  lightPosition[1] = lightHeight;
+  lightPosition[2] = 12*sin(lightAngle);
+  //if (directionalLight) {
+    lightPosition[3] = 0.0;
+  //} else {
+  //  lightPosition[3] = 1.0;
+  //}
+
+    glPushMatrix();
+
+    /* Tell GL new light source position. */
+    glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
+
+       /* Draw "bottom" of floor in blue. */
+    glFrontFace(GL_CW);  /* Switch face orientation. */
+    glColor4f(0.1, 0.1, 0.7, 1.0);
+    drawFloor();
+    glFrontFace(GL_CCW);
+
+        /* Draw "top" of floor.  Use blending to blend in reflection. */
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glColor4f(0.7, 0.0, 0.0, 0.3);
+    glColor4f(1.0, 1.0, 1.0, 0.3);
+    drawFloor();
+    glDisable(GL_BLEND);
+
+        glPushMatrix();
+    glDisable(GL_LIGHTING);
+
+     /* Draw a yellow ball at the light source. */
+      glTranslatef(lightPosition[0], lightPosition[1], lightPosition[2]);
+      glutSolidSphere(1.0, 5, 5);
+
+          glEnable(GL_LIGHTING);
+    glPopMatrix();
+
    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
@@ -588,17 +625,20 @@ int main(int argc, char **argv) {
 
     glutInit(&argc, argv);
 
-    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
+    //glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
+
+  glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_STENCIL | GLUT_MULTISAMPLE);
+
     glutInitWindowSize(500, 500);
     glutCreateWindow("Scene Editor");
 
-    glShadeModel(GL_SMOOTH); // Enables Smooth Shading
-    glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Black Background
-    glClearDepth(1.0f); // Depth Buffer Setup
-    glEnable(GL_DEPTH_TEST); // Enables Depth Testing
-    glDepthFunc(GL_LEQUAL);  // the type
+    //glShadeModel(GL_SMOOTH); // Enables Smooth Shading
+    //glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Black Background
+    //glClearDepth(1.0f); // Depth Buffer Setup
+    //glEnable(GL_DEPTH_TEST); // Enables Depth Testing
+    //glDepthFunc(GL_LEQUAL);  // the type
 
-    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);          // Really Nice Perspective Calculations
+   // glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);          // Really Nice Perspective Calculations
 
     glutReshapeFunc(windowReshape);
     glutDisplayFunc(display);
@@ -606,9 +646,15 @@ int main(int argc, char **argv) {
 
     makeMenu();
 
-    init();
+    //init();
+
 
-     glMatrixMode(GL_PROJECTION);
+  glEnable(GL_CULL_FACE);
+  glEnable(GL_DEPTH_TEST);
+  glEnable(GL_TEXTURE_2D);
+  glLineWidth(3.0);
+
+glMatrixMode(GL_PROJECTION);
   gluPerspective( /* field of view in degree */ 40.0,
   /* aspect ratio */ 1.0,
     /* Z near */ 20.0, /* Z far */ 100.0);
@@ -617,5 +663,12 @@ int main(int argc, char **argv) {
     0.0, 8.0, 0.0,      /* center is at (0,8,0) */
     0.0, 1.0, 0.);      /* up is in postivie Y direction */
 
+  glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
+  glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor);
+  glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 0.1);
+  glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.05);
+  glEnable(GL_LIGHT0);
+  glEnable(GL_LIGHTING);
+
     glutMainLoop();
 }