X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=242a10482f0cfae27c4c01f2bda37e7f38bf4100;hp=0488bceb17f533a26441be127dead4286df13158;hb=fbcff5fdddb4380b77f5cc4eb8a9419266fc1355;hpb=acad09733179bca04aa9c2c74e6092b072d1ae43

diff --git a/scene.c b/scene.c
index 0488bce..242a104 100644
--- a/scene.c
+++ b/scene.c
@@ -109,6 +109,25 @@ char *dirDefault2 = "/cslinux/examples/CITS2231/project-files/models-textures";
 
 char dataDir[200];  // Stores the directory name for the meshes and textures.
 
+static GLfloat floorVertices[4][3] = {
+  { -1000.0, 0.0, 1000.0 },
+  { 1000.0, 0.0, 1000.0 },
+  { 1000.0, 0.0, -1000.0 },
+  { -1000.0, 0.0, -1000.0 },
+};
+
+static GLfloat lightColor[] = {1.0, 1.0, 1.0, 1.0}; // White light
+static GLfloat lightPosition[4];
+
+int moving, startx, starty;
+int lightMoving = 0, lightStartX, lightStartY;
+
+/* Time varying or user-controled variables. */
+static float jump = 0.0;
+static float lightAngle = 0.0, lightHeight = 20;
+GLfloat angle = -150;   /* in degrees */
+GLfloat angle2 = 30;   /* in degrees */
+
 /**
  * Prints out error message when file cannot be read
  * @param fileName Name of file that could not be read
@@ -487,28 +506,65 @@ void windowReshape(int w, int h) {
  * @param x Mouse x position
  * @param y Mouse y position
  */
-void mouse(int btn, int state, int x, int y) {
+/*void mouse(int btn, int state, int x, int y) {
   
+}*/
+static void
+mouse(int button, int state, int x, int y)
+{
+  if (button == GLUT_LEFT_BUTTON) {
+    if (state == GLUT_DOWN) {
+      moving = 1;
+      startx = x;
+      starty = y;
+    }
+    if (state == GLUT_UP) {
+      moving = 0;
+    }
+  }
+  if (button == GLUT_MIDDLE_BUTTON) {
+    if (state == GLUT_DOWN) {
+      lightMoving = 1;
+      lightStartX = x;
+      lightStartY = y;
+    }
+    if (state == GLUT_UP) {
+      lightMoving = 0;
+    }
+  }
 }
 
-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)
+motion(int x, int y)
 {
+  if (moving) {
+    angle = angle + (x - startx);
+    angle2 = angle2 + (y - starty);
+    startx = x;
+    starty = y;
+    glutPostRedisplay();
+  }
+  if (lightMoving) {
+    lightAngle += (x - lightStartX)/40.0;
+    lightHeight += (lightStartY - y)/20.0;
+    lightStartX = x;
+    lightStartY = y;
+    glutPostRedisplay();
+  }
+}
+
+
+/**
+ * Draw a floor.
+ */
+void drawFloor() {
   glDisable(GL_LIGHTING);
 
   //if (useTexture) {
   //  glEnable(GL_TEXTURE_2D);
   //}
 
-  glBegin(GL_QUADS);
+  /*glBegin(GL_QUADS);
     glTexCoord2f(0.0, 0.0);
     glVertex3fv(floorVertices[0]);
     glTexCoord2f(0.0, 16.0);
@@ -517,7 +573,7 @@ drawFloor(void)
     glVertex3fv(floorVertices[2]);
     glTexCoord2f(16.0, 0.0);
     glVertex3fv(floorVertices[3]);
-  glEnd();
+  glEnd();*/
 
   /*if (useTexture) {
     glDisable(GL_TEXTURE_2D);
@@ -526,18 +582,17 @@ drawFloor(void)
   glEnable(GL_LIGHTING);
 }
 
-
-static GLfloat lightColor[] = {1.0, 1.0, 1.0, 1.0}; /* green-tinted */
-static GLfloat lightPosition[4];
-static float lightAngle = 0.0, lightHeight = 20;
-
-
 /**
  * Display function
  */
 void display() {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   glLoadIdentity();
+  gluLookAt(
+    0.0, 0.0, 60.0,  /* eye is at (x,y,z) */
+    0.0, 0.0,  0.0,  /* center is at (x,y,z) */
+    0.0, -1.0,  0.0   /* up is in postivie Y direction */
+    );
 
   /* Reposition the light source. */
   lightPosition[0] = 12*cos(lightAngle);
@@ -546,6 +601,10 @@ void display() {
   lightPosition[3] = 0.0;
 
   glPushMatrix();
+      /* Perform scene rotations based on user mouse input. */
+    glRotatef(angle2, 1.0, 0.0, 0.0);
+    glRotatef(angle, 0.0, 1.0, 0.0);
+
     glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
 
     glEnable(GL_BLEND);
@@ -553,11 +612,16 @@ void display() {
     drawFloor();
     glDisable(GL_BLEND);
 
-    glutSolidTeapot(1); // Draw teapot for test
+    glPushMatrix();
+    
+      //glTranslatef(0.0, 0.0, 0.0);
+ 
+      glutSolidTeapot(30); // Draw teapot for test
+    glPopMatrix();
 
     glPushMatrix();
       glDisable(GL_LIGHTING);
-      glColor3f(1.0, 1.0, 0.0);
+      glColor3f(1.0, 1.0, 1.0);
 
       /* Draw a yellow ball at the light source. */
       glTranslatef(lightPosition[0], lightPosition[1], lightPosition[2]);
@@ -575,25 +639,15 @@ void display() {
  * init function; sets initial OpenGL state
  */
 void init() {
-  glEnable(GL_CULL_FACE);
-  glEnable(GL_DEPTH_TEST);
-  glEnable(GL_TEXTURE_2D);
-  glLineWidth(3.0);
-
   glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+
   gluPerspective(
-     40.0,  /* field of view in degree */ 
+     60.0,  /* field of view in degree */
       1.0,  /* aspect ratio */ 
       0.0,  /* Z near */
     900.0   /* Z far */
-    );
-  
-  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,  0.0   /* up is in postivie Y direction */
-    );      
+    );    
 
   glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
   glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor);
@@ -601,6 +655,9 @@ void init() {
   glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.05);
   glEnable(GL_LIGHT0);
   glEnable(GL_LIGHTING);
+
+  glMatrixMode(GL_MODELVIEW);
+  glLoadIdentity();
 }
 
 /**
@@ -633,12 +690,16 @@ int main(int argc, char **argv) {
   glClearDepth(1.0f); // Depth Buffer Setup
   glEnable(GL_DEPTH_TEST); // Enables Depth Testing
   glDepthFunc(GL_LEQUAL);  // the type
+  glEnable(GL_CULL_FACE);
+  glEnable(GL_TEXTURE_2D);
+  glLineWidth(3.0);
 
-  glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);          // Really Nice Perspective Calculations
+  glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 
   glutReshapeFunc(windowReshape);
   glutDisplayFunc(display);
   glutMouseFunc(mouse);
+  glutMotionFunc(motion);
 
   makeMenu();