X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=scene.c;h=c9ec1271fb968ee7b830df79e488493ae42b834b;hb=88cc1cef079f2ece6307c46634a0ef277fc38af8;hp=c546975575f95eeaded7137d644d5d0da4bb476c;hpb=1974078227af3b4da18ff6813f9cf5ed231d9205;p=atyndall%2Fcits2231.git

diff --git a/scene.c b/scene.c
index c546975..c9ec127 100644
--- a/scene.c
+++ b/scene.c
@@ -1,9 +1,7 @@
-// compile this program using:
-//   gcc -O3 -Wall -std=c99 -o scene scene.c bitmap.c -lglut
-// Or, with cygwin:        (-mno-cygwin is only so the executable runs from windows)
-//   gcc -mno-cygwin -O3 -Wall -std=c99 -o scene scene.c bitmap.c -lglut32 -lglu32 -lopengl32
-// Or, use make via the supplied Makefile:     (For cygwin, install the package for make)
-//   make
+/**
+ * CITS2231 Graphics Scene Editor
+ * @author Ashley Tyndall (20915779)
+ */
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -460,15 +458,145 @@ void makeMenu() {
   glutAttachMenu(GLUT_RIGHT_BUTTON);
 }
 
+/**
+ * Called when window is resized
+ * @param w New width
+ * @param h New height
+ */
+void windowReshape(int w, int h) {
+  GLdouble near = -10.0;
+  GLdouble far = 10.0;
+
+  glViewport(0, 0, (GLsizei) w, (GLsizei) h);
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  if (w <= h) 
+    glOrtho(near, far, near*(GLfloat)h/(GLfloat)w,
+             far*(GLfloat)h/(GLfloat)w, near, far);
+  else
+    glOrtho(near*(GLfloat)w/(GLfloat)h,
+             far*(GLfloat)w/(GLfloat)h, near, far, near, far);
+   glMatrixMode(GL_MODELVIEW); 
+   glLoadIdentity();
+}
+
+/**
+ * Called when mouse event occurs
+ * @param btn Mouse button
+ * @param state State of mouse button
+ * @param x Mouse x position
+ * @param y Mouse y position
+ */
+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);
+}
+
+
+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
  */
 void display() {
-   // You probably want to change both of the following.
-   glClear(GL_COLOR_BUFFER_BIT);
-   glFlush();
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+   glLoadIdentity();
+
+   /*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();*/
+
+
+   //glTranslatef( 0.0f, 0.0f, -5.0f); // Move into the Screen 10.0
+   //glutSolidTeapot(1);
+
+  /* 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();*/
+
+
+   /* 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();
+    glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
+
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    drawFloor();
+    glDisable(GL_BLEND);
+
+    glutSolidTeapot(1);
+
+        glPushMatrix();
+    glDisable(GL_LIGHTING);
+    glColor3f(1.0, 1.0, 0.0);
+
+     /* Draw a yellow ball at the light source. */
+      glTranslatef(lightPosition[0], lightPosition[1], lightPosition[2]);
+      glutSolidSphere(1.0, 5, 5);
+
+         glEnable(GL_LIGHTING);
+    glPopMatrix();
+
+  glPopMatrix();
+
+    glutSwapBuffers();
 }
 
+
 /**
  * Main function
  * @param argc Number of arguments
@@ -488,13 +616,52 @@ int main(int argc, char **argv) {
     for(int i=0; i<NMESH; i++) meshes[i]=NULL;
     for(int i=0; i<NTEXTURE; i++) textures[i]=NULL;
 
-    // The following is enough to run the program, but you'll
-    // need to change it significantly.
-
     glutInit(&argc, argv);
+
+    //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
+
+   // glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);          // Really Nice Perspective Calculations
+
+    glutReshapeFunc(windowReshape);
     glutDisplayFunc(display);
+    glutMouseFunc(mouse);
 
     makeMenu();
+
+    //init();
+
+
+  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);
+  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 */
+
+  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();
 }