void loadModel()
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
model.loadFromFile("models/teapot.tri");
mode = 1;//translation
printf("Current mode: translation\n");
useWorldCoordinate = true;
printf("Using world coordinate\n");
initClipping();
model.initTransform();
camera.initTransform();
}
void myInit()
{
ballModel.loadFromFile("models/balls.tri");
TRIobj=&ballModel;
glEnable(GL_DEPTH_TEST);
glClearColor(0,0,0,1.0);
glewInit();
if(glewIsSupported("GL_VERSION_2_0"))
printf("Ready for OpenGL 2.0\n");
else
{
printf("GLSL not supported\n");
exit(1);
}
//typedef bool (*PFNWGLSWAPINTERVALFARPROC)(int);
//PFNWGLSWAPINTERVALFARPROC wglSwapIntervalEXT = 0;
//wglSwapIntervalEXT = (PFNWGLSWAPINTERVALFARPROC)wglGetProcAddress("wglSwapIntervalEXT");
//wglSwapIntervalEXT(1);
shaderInit();
changeShader(currentShader);
materialInit();
lightInit();
timeNow=timeOld=glutGet(GLUT_ELAPSED_TIME);
}
void myKeyboard(unsigned char key, int x, int y)
{
switch(key)
{
/** Optional: implement some keyboard function here */
case 27:
exit(0);
break;
// change mode
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
mode = (int)(key - '0');
printf("Current mode: %d\n", mode);
break;
case '8':
mode = 8;
doClipping = (!doClipping) ? true : false;
printf("%s\n", (doClipping) ? "Enable clipping" : "Disable clipping");
break;
case '9':
useWorldCoordinate = (!useWorldCoordinate) ? true : false;
printf("%s\n", (useWorldCoordinate) ? "Using world coordinates" : "Not using world coordinates");
model.initTransform();
camera.initTransform();
//initObjTransform();
//initCamTransform();
break;
case '0':
printf("RESET!!!\n");
loadModel();
break;
// transformation
case 'd':
if(mode == 1)
//model.translate.x += 10;
model.updateTranslate(10, 0, 0);
else if(mode == 2)
model.updateRotationy(3.0, 1.0, 0.0, 0.0);
else if(mode == 3)
//model.scale.x += 0.1;
model.updateScale(1.1, 1, 1);
else if(mode == 5)
{
camera.position.x += 5;
camera.lookAt.x += 5;
}
else if(mode == 6)
camera.updateRotationy(-3.0, 1.0, 0.0, 0.0);
break;
case 'q':
if(mode == 1)
//model.translate.y += 10;
model.updateTranslate(0, 10, 0);
else if(mode == 2)
model.updateRotationz(3.0, 0.0, 1.0, 0.0);
else if(mode == 3)
//model.scale.y += 0.1;
model.updateScale(1, 1.1, 1);
else if(mode == 5)
{
camera.position.y += 5;
camera.lookAt.y += 5;
}
else if(mode == 6)
camera.updateRotationz(-3.0, 0.0, 1.0, 0.0);
break;
case 's':
if(mode == 1)
//model.translate.z += 10;
model.updateTranslate(0, 0, 10);
else if(mode == 2)
model.updateRotationx(3.0, 0.0, 0.0, 1.0);
else if(mode == 3)
//model.scale.z += 0.1;
model.updateScale(1, 1, 1.1);
else if(mode == 5)
{
camera.position.z += 5;
camera.lookAt.z += 5;
}
else if(mode == 6)
camera.updateRotationx(-3.0, 0.0, 0.0, 1.0);
break;
case 'a':
if(mode == 1)
//model.translate.x -= 10;
model.updateTranslate(-10, 0, 0);
else if(mode == 2)
model.updateRotationy(-3.0, 1.0, 0.0, 0.0);
else if(mode == 3)
//model.scale.x -= 0.1;
model.updateScale(0.9, 1, 1);
else if(mode == 5)
{
camera.position.x -= 5;
camera.lookAt.x -= 5;
}
else if(mode == 6)
camera.updateRotationy(3.0, 1.0, 0.0, 0.0);
break;
case 'e':
if(mode == 1)
//model.translate.y -= 10;
model.updateTranslate(0, -10, 0);
else if(mode == 2)
model.updateRotationz(-3.0, 0.0, 1.0, 0.0);
else if(mode == 3)
//model.scale.y -= 0.1;
model.updateScale(1, 0.9, 1);
else if(mode == 5)
{
camera.position.y -= 5;
camera.lookAt.y -= 5;
}
else if(mode == 6)
camera.updateRotationz(3.0, 0.0, 1.0, 0.0);
break;
case 'w':
if(mode == 1)
//model.translate.z -= 10;
model.updateTranslate(0, 0, -10);
else if(mode == 2)
model.updateRotationx(-3.0, 0.0, 0.0, 1.0);
else if(mode == 3)
//model.scale.z -= 0.1;
model.updateScale(1, 1, 0.9);
else if(mode == 5)
{
camera.position.z -= 5;
camera.lookAt.z -= 5;
}
else if(mode == 6)
camera.updateRotationx(3.0, 0.0, 0.0, 1.0);
break;
// zoom in/out
case 'z':
if(mode == 5)
camera.lookAtDist -= 5;
camera.updateRevolution(0, 0, 0, 0);
break;
case 'x':
if(mode == 5)
camera.lookAtDist += 5;
camera.updateRevolution(0, 0, 0, 0);
break;
// shear / camera rotation around VRP
case 't':
if(mode == 4)
model.updateShear(1.0, 0, 1);
else if(mode == 7)
camera.updateRevolution(((int)camera.revAngle[0] + 3) % 360, 1, 0, 0);
else if(mode == 8 && doClipping)
xMin += 10;
break;
case 'y':
if(mode == 4)
model.updateShear(-1.0, 0, 1);
else if(mode == 7)
camera.updateRevolution(((int)camera.revAngle[0] - 3) % 360, 1, 0, 0);
else if(mode == 8 && doClipping)
xMin -= 10;
break;
case 'T':
if(mode == 4)
model.updateShear(1.0, 0, 2);
else if(mode == 8 && doClipping)
xMax += 10;
break;
case 'Y':
if(mode == 4)
model.updateShear(-1.0, 0, 2);
else if(mode == 8 && doClipping)
xMax -= 10;
break;
case 'g':
if(mode == 4)
model.updateShear(1.0, 1, 0);
else if(mode == 7)
camera.updateRevolution(((int)camera.revAngle[1] + 3) % 360, 0, 1, 0);
else if(mode == 8 && doClipping)
yMin += 10;
break;
case 'h':
if(mode == 4)
model.updateShear(-1.0, 1, 0);
else if(mode == 7)
camera.updateRevolution(((int)camera.revAngle[1] - 3) % 360, 0, 1, 0);
else if(mode == 8 && doClipping)
yMin -= 10;
break;
case 'G':
if(mode == 4)
model.updateShear(1.0, 1, 2);
else if(mode == 8 && doClipping)
yMax += 10;
break;
case 'H':
if(mode == 4)
model.updateShear(-1.0, 1, 2);
else if(mode == 8 && doClipping)
yMax -= 10;
break;
case 'b':
if(mode == 4)
model.updateShear(1.0, 2, 0);
else if(mode == 7)
camera.updateRevolution(((int)camera.revAngle[2] + 3) % 360, 0, 0, 1);
else if(mode == 8 && doClipping)
zMin += 10;
break;
case 'n':
if(mode == 4)
model.updateShear(-1.0, 2, 0);
else if(mode == 7)
camera.updateRevolution(((int)camera.revAngle[2] - 3) % 360, 0, 0, 1);
else if(mode == 8 && doClipping)
zMin -= 10;
break;
case 'B':
if(mode == 4)
model.updateShear(1.0, 2, 1);
else if(mode == 8 && doClipping)
zMax += 10;
break;
case 'N':
if(mode == 4)
model.updateShear(-1.0, 2, 1);
else if(mode == 8 && doClipping)
zMax -= 10;
break;
// change model
case ',':
model.loadFromFile("models/Gym.tri");
break;
case '.':
model.loadFromFile("models/Fighter.tri");
break;
case '/':
model.loadFromFile("models/Csie.tri");
break;
case ';':
model.loadFromFile("models/Easter.tri");
break;
case '\'':
model.loadFromFile("models/Car_road.tri");
break;
}
}
void display()
{
glClearColor(0.0f,0.0f,0.0f,0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_MODELVIEW);
/** Todo: Create your own affine transformation matrix here*/
glLoadIdentity();
// rotation
glMultMatrixf(camera.rotate.m);
gluLookAt(camera.position.x, camera.position.y, camera.position.z,
camera.lookAt.x, camera.lookAt.y, camera.lookAt.z,
camera.up.x, camera.up.y, camera.up.z);
// world coordinate
glPushMatrix();
glBegin(GL_LINES);
// x axis
glColor3f(1.0, 0.0, 0.0);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(500.0, 0.0, 0.0);
// y axis
glColor3f(0.0, 1.0, 0.0);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(0.0, 500.0, 0.0);
// z axis
glColor3f(0.0, 0.0, 1.0);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(0.0, 0.0, 500.0);
glEnd();
glPopMatrix();
/** Todo: Draw Model (clipping and non-clipping version)*/
glPushMatrix();
//glScalef(model.scale.x, model.scale.y, model.scale.z);
//glTranslatef(model.translate.x, model.translate.y, model.translate.z);
glMultMatrixf(model.scale.m);
glMultMatrixf(model.translate.m);
glMultMatrixf(model.shear.m);
glMultMatrixf(model.rotate.m);
glGetFloatv(GL_MODELVIEW_MATRIX, mModelView.m);
model.drawAxes();
model.drawBox();
if(doClipping)
drawModelClipping();
else
model.drawModel();
glPopMatrix();
// clipping field
if(doClipping)
{
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glColor3f(1.0, 1.0, 0.0);
glBegin(GL_QUADS);
glVertex3f(2.0 * xMin / windowWidth, 2.0 * yMin / windowHeight, -1.0);
glVertex3f(2.0 * xMax / windowWidth, 2.0 * yMin / windowHeight, -1.0);
glVertex3f(2.0 * xMax / windowWidth, 2.0 * yMax / windowHeight, -1.0);
glVertex3f(2.0 * xMin / windowWidth, 2.0 * yMax / windowHeight, -1.0);
glEnd();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
glutSwapBuffers();
}
