X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=bc6e5950ff3186d57797b1b6b10e48c3a2353dae;hp=80c1ee982ab653a99b7e28308edc05cc22dfd49b;hb=35fb03fca913e98a903e9dc5b179e941505235ee;hpb=e7a92d3985b360bcb688de9976d1adcfae5de583

diff --git a/scene.c b/scene.c
index 80c1ee9..bc6e595 100644
--- a/scene.c
+++ b/scene.c
@@ -184,22 +184,8 @@ void makeMenu() {
  */
 void windowReshape(int w, int h) {
   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-    gluPerspective(
-    60.0,  /* field of view in degree */
-     1.0,  /* aspect ratio */
-    nearClip,  /* Z near */
-     farClip   /* Z far */
-    );
-  /*if (w <= h)
-    glOrtho(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, nearClip, farClip);
-   glMatrixMode(GL_MODELVIEW); */
-   glLoadIdentity();
+  width = w;
+  height = h;
 }
 
 /**
@@ -220,16 +206,66 @@ void mouse(int button, int state, int x, int y) {
       moving = 0;
     }
   }
-  if (button == GLUT_MIDDLE_BUTTON) {
-    if (state == GLUT_DOWN) {
-      lightMoving = 1;
-      lightStartX = x;
-      lightStartY = y;
-    }
-    if (state == GLUT_UP) {
-      lightMoving = 0;
-    }
+}
+
+/**
+ * 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':
+    case 'W':
+      camz -= factor;
+      break;
+    case 'a':
+    case 'A':
+      camx -= factor;
+      break;
+    case 's':
+    case 'S':
+      camz += factor;
+      break;
+    case 'd':
+    case 'D':
+      camx += factor;
+      break;
+    case 'q':
+    case 'Q':
+      camy += factor;
+      break;
+    case 'e':
+    case 'E':
+      camy -= factor;
+      break;
+    case 'z':
+    case 'Z':
+      keyrot += factor;
+      break;
+    case 'x':
+    case 'X':
+      keyrot -= factor;
+      break;
+    case '=':
+    case '+':
+      factor += 0.1;
+      printf("Factor of change is now %f\n", factor);
+      break;
+    case '-':
+    case '_':
+      factor -= 0.1;
+      printf("Factor of change is now %f\n", factor);
+      break;
+
   }
+  printf("Camera is now at (%f, %f, %f), angle %f\n", camx, camy, camz, keyrot);
+  glutPostRedisplay();
 }
 
 /**
@@ -239,17 +275,24 @@ void mouse(int button, int state, int x, int y) {
  */
 void motion(int x, int y) {
   if (moving) {
-    angle = angle + (x - startx);
-    angle2 = angle2 + (y - starty);
+    zoom += (y - starty);
+    rotate += (x - startx);
     startx = x;
     starty = y;
     glutPostRedisplay();
   }
-  if (lightMoving) {
-    lightAngle += (x - lightStartX)/40.0;
-    lightHeight += (lightStartY - y)/20.0;
-    lightStartX = x;
-    lightStartY = y;
+  if (lightMoving0) {
+    lightAngle0 += (x - lightStartX0)/40.0;
+    lightHeight0 += (lightStartY0 - y)/20.0;
+    lightStartX0 = x;
+    lightStartY0 = y;
+    glutPostRedisplay();
+  }
+  if (lightMoving1) {
+    lightAngle1 += (x - lightStartX1)/40.0;
+    lightHeight1 += (lightStartY1 - y)/20.0;
+    lightStartX1 = x;
+    lightStartY1 = y;
     glutPostRedisplay();
   }
 }
@@ -259,58 +302,89 @@ void motion(int x, int y) {
  */
 void display() {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+  
+  // Redraw projection matrix
+  glMatrixMode(GL_PROJECTION);
   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 */
+
+  float aspect;
+  if ( width <= height ) {
+    aspect = (float)height / (float)width;
+  } else {
+    aspect = (float)width / (float)height;
+  }
+
+  gluPerspective(
+    75.0,
+    aspect,
+    0.1,
+    300
     );
-   gluPerspective(
-    60.0,  /* field of view in degree */
-     1.0,  /* aspect ratio */
-    nearClip,  /* Z near */
-     farClip   /* Z far */
+
+  glMatrixMode(GL_MODELVIEW);
+  glLoadIdentity();
+
+  gluLookAt(
+    0.0,  0.0,  15.0 + (zoom*zoomFactor),  /* eye is at (x,y,z) */
+    0.0,  0.0,  0.0,  /* center is at (x,y,z) */
+    0.0,  10.0,  0.0   /* up is in postivie Y direction */
     );
 
+  glRotatef(40.0, 1.0, 0.0, 0.0);
 
-  // **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);
+  /* Reposition the light source 0. */
+  lightPosition0[0] = 12*cos(lightAngle0);
+  lightPosition0[1] = lightHeight0;
+  lightPosition0[2] = 12*sin(lightAngle0);
+  lightPosition0[3] = 0.0;
 
-  /* Reposition the light source. */
-  lightPosition[0] = 12*cos(lightAngle);
-  lightPosition[1] = lightHeight;
-  lightPosition[2] = 12*sin(lightAngle);
-  lightPosition[3] = 0.0;
+  /* Reposition the light source 1. */
+  lightPosition1[0] = 12*cos(lightAngle1);
+  lightPosition1[1] = lightHeight1;
+  lightPosition1[2] = 12*sin(lightAngle1);
+  lightPosition1[3] = 0.0;
 
   glPushMatrix();
 
-    /* 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
+    /* Perform scene rotations based on user mouse/keyboard input. */
+    glRotatef(rotate*rotateFactor, 0.0, 1.0, 0.0);
+    glTranslatef(camx, camy, camz);
+    glRotatef(keyrot, 1.0, 0.0, 0.0);
 
-    glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
+    glLightfv(GL_LIGHT0, GL_POSITION, lightPosition0);
+    glLightfv(GL_LIGHT1, GL_POSITION, lightPosition1);
 
     drawFloor();
-
-    drawLine();
     
     // Draw teapot for a test object
     glPushMatrix();
-      glTranslatef(0.0, 1.0, 0.0); // **NOTE: Teapot does not rest on surface
-      glColor3f(0.5, 0.5, 0.5);
+      glTranslatef(0.0, 0.5, 0.0); // **NOTE: Teapot currently does not rest on surface
+      glColor3f(0.0, 0.0, 0.0);
+      glFrontFace(GL_CW); // The teapot does not obey the right-hand rule
       glutSolidTeapot(1);
+      glFrontFace(GL_CCW);
     glPopMatrix();
 
     // Draw a white ball over the light source
     glPushMatrix();
       glDisable(GL_LIGHTING);
       glColor3f(1.0, 1.0, 1.0);
-      glTranslatef(lightPosition[0], lightPosition[1], lightPosition[2]);
-      glutSolidSphere(1.0, 50, 50);
+      glTranslatef(lightPosition0[0], lightPosition0[1], lightPosition0[2]);
+      glutSolidSphere(0.5, 50, 50);
       glEnable(GL_LIGHTING);
     glPopMatrix();
 
+    // Draw a white ball over the light source
+    glPushMatrix();
+      glDisable(GL_LIGHTING);
+      glColor3f(1.0, 1.0, 1.0);
+      glTranslatef(lightPosition1[0], lightPosition1[1], lightPosition1[2]);
+      glutSolidSphere(0.5, 50, 50);
+      glEnable(GL_LIGHTING);
+    glPopMatrix();
+
+    drawAxisLines();
+
   glPopMatrix();
 
   glutSwapBuffers();
@@ -320,26 +394,31 @@ void display() {
  * init function; sets initial OpenGL state
  */
 void init() {
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-
-  
-  glLightfv(GL_LIGHT0, GL_POSITION, light0_pos);
   glLightfv(GL_LIGHT0, GL_AMBIENT, ambient0);
   glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse0);
   glLightfv(GL_LIGHT0, GL_SPECULAR, specular0);
+  glLightfv(GL_LIGHT0, GL_SPOT_DIRECTION, direction0);
+
+  glLightf(GL_LIGHT0, GL_SPOT_CUTOFF, 90.0);
+
+  glLightfv(GL_LIGHT1, GL_AMBIENT, ambient1);
+  glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse1);
+  glLightfv(GL_LIGHT1, GL_SPECULAR, specular1);
+  glLightfv(GL_LIGHT1, GL_SPOT_DIRECTION, direction1);
+
+  glLightf(GL_LIGHT1, GL_SPOT_CUTOFF, 90.0);
+
   glLightModelfv(GL_LIGHT_MODEL_AMBIENT, glightmodel);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHTING);
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE );
-  glMaterialfv( GL_FRONT_AND_BACK, GL_SPECULAR, specular0);
-  glMaterialfv( GL_FRONT_AND_BACK, GL_EMISSION, emission0);
 
-  
+  glMaterialfv(GL_FRONT, GL_AMBIENT, ambient);
+  glMaterialfv(GL_FRONT, GL_DIFFUSE, diffuse);
+  glMaterialfv(GL_FRONT, GL_SPECULAR, specular);
+  glMaterialfv(GL_FRONT, GL_EMISSION, emission);
+  glMaterialf(GL_FRONT, GL_SHININESS, shine);
 
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
+  //glEnable(GL_LIGHT0);
+  //glEnable(GL_LIGHT1);
+  glEnable(GL_LIGHTING);
 }
 
 /**
@@ -370,17 +449,20 @@ int main(int argc, char **argv) {
   glShadeModel(GL_SMOOTH); // Enables Smooth Shading
   glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Black Background
   glClearDepth(1.0f); // Depth Buffer Setup
+  glDepthRange(0,1);
   glEnable(GL_DEPTH_TEST); // Enables Depth Testing
   glDepthFunc(GL_LEQUAL);  // the type
-  glEnable(GL_CULL_FACE);
   glEnable(GL_TEXTURE_2D);
-  glLineWidth(1.0);
+  //glEnable(GL_CULL_FACE);
+  glEnable(GL_NORMALIZE);
+  glLineWidth(2.0);
 
   glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 
   glutReshapeFunc(windowReshape);
   glutDisplayFunc(display);
   glutMouseFunc(mouse);
+  glutKeyboardFunc(keyboard);
   glutMotionFunc(motion);
 
   makeMenu();
@@ -388,4 +470,4 @@ int main(int argc, char **argv) {
   init();
 
   glutMainLoop();
-}
+}
\ No newline at end of file