CMirror::CMirror()
{
p0=CVec3df(-2.5,0.0,-2.0);
p1=CVec3df(2.5,0.0,-2.0);
p2=CVec3df(-2.5,3.0,-2.0);
showMirror=true;
p3=p1+p2-p0;
initReflectionMatrix();
initWorldToMirrorTransformation();
}
void CCatmullRom::displayCurve()
{
// display the Catmull-Rom spline representing the profile curve using
// a green line (RGB=(0,1,0)) with a width of WIDTH_CURVE
double xArray[100];
double yArray[100];
for (int i=0; i<n; i++) {
xArray[i]= ctrlPoints[i]->getArray()[0];
yArray[i]= ctrlPoints[i]->getArray()[1];
}
glColor3f(0,1,0);
//CATMULL-ROM SPLINE
glLineWidth(WIDTH_CURVE);
glBegin(GL_LINE_STRIP);
for(int i=1;i<n-2;i++) {
for(int j=0; j<NUM_CIRCUMFERENTIAL_POINTS; j++) {
double deltay = 0.5*(yArray[i+1]-yArray[i-1]);
double deltax = 0.5*(xArray[i+1]-xArray[i-1]);
CVec3df n = CVec3df(deltax, deltay, 0).cross(CVec3df(0, 1, 0));
surfaceNormals[i][j][0] = n.getArray()[0];
surfaceNormals[i][j][2] = n.getArray()[1];
surfaceNormals[i][j][1] = n.getArray()[2];
double t = j*0.0200;
double xPoint = xArray[i]+(t*(-xArray[i-1]+xArray[i+1])/2)+pow(t,2)*(xArray[i-1]-2.5*xArray[i]+2*xArray[i+1]-0.5*xArray[i+2])+ pow(t,3)*(-0.5*xArray[i-1]+1.5*xArray[i]-1.5*xArray[i+1]+0.5*xArray[i+2]);
double yPoint = yArray[i]+(t*(-yArray[i-1]+yArray[i+1])/2)+pow(t,2)*(yArray[i-1]-2.5*yArray[i]+2*yArray[i+1]-0.5*yArray[i+2])+ pow(t,3)*(-0.5*yArray[i-1]+1.5*yArray[i]-1.5*yArray[i+1]+0.5*yArray[i+2]);
curvePoints[i] = CVec3df(xArray[i], yArray[i],0);
glVertex2f(xPoint, yPoint);
}
}
glEnd();
for(int i=0; i<NUM_CURVE_POINTS; i++){
for(int j=0; j<NUM_CIRCUMFERENTIAL_POINTS; j++){
float angle = (M_PI*j*2)/NUM_CIRCUMFERENTIAL_POINTS;
surfacePoints[i][j][0]= curvePoints[i].getArray()[0]*cos(angle);
surfacePoints[i][j][2]= curvePoints[i].getArray()[0]*sin(angle);
surfacePoints[i][j][1]= curvePoints[i].getArray()[1];
}
}
}
void init(void)
{
// select clearing color (for glClear)
glClearColor (1.0, 1.0, 1.0, 0.0); // RGB-value for white
// initialize view (simple perspective projection)
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(6.0, (GLfloat) windowWidth/(GLfloat) windowHeight, 5.0, 55.0);
gluLookAt(0,0,45, -0.8,0.2,0, 0,1,0);
trackball.tbInit(GLUT_LEFT_BUTTON);
lighting.init();
// Initialise balls
ball1.setPosition(CVec3df(-2,0,-1));
ball1.setVelocity(CVec3df(25,0,0));
ball2.setPosition(CVec3df(2,0.20,-1));
ball2.setVelocity(CVec3df(-33,30,0));
ball1.setMass(2.25);
ball2.setMass(1);
// Distribute trees randomly over the front half of the ground plane such
// that the minimum distance between any two trees is at least minDistanceTrees
GLfloat x,z,xx,zz; // (x,z) positions of trees
bool validPosition;
int i;
for(i=0;i<numTrees;i++)
{
do {
validPosition=true;
x=(GLfloat) randomDouble(-1.95,1.95);
z=(GLfloat) randomDouble(0,1.95);
for(int j=0;j<i;j++)
{ // position is valid if the distance between the trunks of each tree is at least minDistanceTrees
trees[j].getPosition(xx,zz);
if (sqrt((xx-x)*(xx-x)+(zz-z)*(zz-z))<minDistanceTrees) { validPosition=false; break;}
}
} while (validPosition==false);
trees[i].setPosition(x,z);
}
// Distribute flowers randomly over the back half of the ground plane such
// that the minimum distance between any two flowers is at least minDistanceFlowers
// x,z,xx,zz; // (x,z) positions of trees
for(i=0;i<numFlowers;i++)
{
do {
validPosition=true;
x=(GLfloat) randomDouble(-1.95,1.95);
z=(GLfloat) randomDouble(-1.8,-1.1);
for(int j=0;j<i;j++)
{ // position is valid if the distance between the stems of each tree is at least minDistanceFlowers
flowers[j].getPosition(xx,zz);
if (sqrt((xx-x)*(xx-x)+(zz-z)*(zz-z))<minDistanceFlowers) { validPosition=false; break;}
}
} while (validPosition==false);
flowers[i].setPosition(x,z);
}
// initialise three texture names
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(3, texName);
ground.setTexture(texName[0]);
monument.setTexture(texName[1]);
trees[0].setTexture(texName[2]);
}
