X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=d041021c554e36576f9b4085569d47026d66144b;hp=dde21250a2676d16a4b93079f1edeedef72ee0dd;hb=0c5705aa70f1a1875df4f9b33d5b04dce383ad72;hpb=805a86b6d1deded8f3f69fa059e1916e0e490ce5

diff --git a/scene.c b/scene.c
index dde2125..d041021 100644
--- a/scene.c
+++ b/scene.c
@@ -184,16 +184,16 @@ void makeMenu() {
  */
 void windowReshape(int w, int h) {
   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
-  glMatrixMode(GL_PROJECTION);
+  /*glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
   if (w <= h) 
-    glOrtho(near, far, near*(GLfloat)h/(GLfloat)w,
+    glFrustum(near, far, near*(GLfloat)h/(GLfloat)w,
              far*(GLfloat)h/(GLfloat)w, -100, 100);
   else
-    glOrtho(near*(GLfloat)w/(GLfloat)h,
-             far*(GLfloat)w/(GLfloat)h, near, far, -100, 100);
-   glMatrixMode(GL_MODELVIEW); 
-   glLoadIdentity();
+    glFrustum(near*(GLfloat)w/(GLfloat)h,
+             far*(GLfloat)w/(GLfloat)h, near, far, nearClip, farClip);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();*/
 }
 
 /**
@@ -226,6 +226,47 @@ void mouse(int button, int state, int x, int y) {
   }
 }
 
+/**
+ * Keybord event handler
+ * w/s increase/decrease the z
+ * a/d increase/decrease the x
+ * q/e increase/decrease the y
+ * z/x increase/decrease the angle
+ * @param key Key pressed
+ * @param x x co-ordinate of mouse
+ * @param y y co-ordinate of mouse
+ */
+void keyboard(unsigned char key, int x, int y) {
+  switch(key) {
+    case 'w':
+      camz = camz - 1;
+      break;
+    case 'a':
+      camx = camx - 1;
+      break;
+    case 's':
+      camz = camz + 1;
+      break;
+    case 'd':
+      camx = camx + 1;
+      break;
+    case 'q':
+      camy = camy + 1;
+      break;
+    case 'e':
+      camy = camy - 1;
+      break;
+    case 'z':
+      rot = rot + 1;
+      break;
+    case 'x':
+      rot = rot - 1;
+      break;
+  }
+  printf("Camera is now at (%f, %f, %f), angle %f\n", camx, camy, camz, rot);
+  glutPostRedisplay();
+}
+
 /**
  * Called when motion event occurs
  * @param x Mouse x position
@@ -254,16 +295,17 @@ void motion(int x, int y) {
 void display() {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   glLoadIdentity();
-  gluLookAt(
-    0.0, 0.0, 10.0,  /* 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 */
-    );
-
+  //gluLookAt(
+  //  0.0, 0.0, 30.0,  /* 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 */
+   // );
 
+  glTranslatef(camx, camy, camz);
+  
   // **NOTE: Currently this rotation function is all that moves the camera off
   //         the flat surface. Need to integrate function into gluLookAt
-  glRotatef(30.0, 1.0, 0.0, 0.0);
+  glRotatef(rot, 1.0, 0.0, 0.0);
 
   /* Reposition the light source. */
   lightPosition[0] = 12*cos(lightAngle);
@@ -275,7 +317,7 @@ void display() {
 
     /* Perform scene rotations based on user mouse input. */
     glRotatef(angle, 0.0, 1.0, 0.0);
-    //glRotatef(angle2, 1.0, 0.0, 0.0); **NOTE: Only one degree of freedom
+    glRotatef(angle2, 1.0, 0.0, 0.0); //**NOTE: Only one degree of freedom
 
     glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
 
@@ -308,17 +350,19 @@ void display() {
  * init function; sets initial OpenGL state
  */
 void init() {
-  glMatrixMode(GL_PROJECTION);
+  //glMatrixMode(GL_PROJECTION);
+  //glLoadIdentity();
+
+   //gluPerspective(
+   // 60.0,  /* field of view in degree */
+   //  1.0,  /* aspect ratio */
+   // nearClip,  /* Z near */
+    // farClip   /* Z far */
+   // );
+  
+  glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
 
-  gluPerspective(
-    60.0,  /* field of view in degree */
-     1.0,  /* aspect ratio */
-    near,  /* Z near */
-     far   /* Z far */
-    );
-
-  
   glLightfv(GL_LIGHT0, GL_POSITION, light0_pos);
   glLightfv(GL_LIGHT0, GL_AMBIENT, ambient0);
   glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse0);
@@ -333,8 +377,6 @@ void init() {
 
   
 
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
 }
 
 /**
@@ -371,11 +413,27 @@ int main(int argc, char **argv) {
   glEnable(GL_TEXTURE_2D);
   glLineWidth(1.0);
 
+  glMatrixMode(GL_PROJECTION);
+  gluPerspective(
+     40.0, /* field of view in degree */
+      1.0, /* aspect ratio */
+     10.0, /* Z near */
+    100.0  /* Z far */
+    );
+
+  glMatrixMode(GL_MODELVIEW);
+  gluLookAt(
+    0.0, 35.0, 10.0,  /* eye is at (0,8,60) */
+    0.0,  0.0,  0.0,  /* center is at (0,8,0) */
+    0.0,  1.0,  0.0   /* up is in postivie Y direction */
+    );
+
   glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 
   glutReshapeFunc(windowReshape);
   glutDisplayFunc(display);
   glutMouseFunc(mouse);
+  glutKeyboardFunc(keyboard);
   glutMotionFunc(motion);
 
   makeMenu();