void ClothDemo::Render()
{
DrawGrid(Vector3(20, 0, 20));
glTranslatef(-2, 8, -2);
glRotatef(45, 0, 1, 0);
cloth.draw();
const static GLfloat lightPosition[] = { 0, 3, 8, 0 };
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);
glPushMatrix();
glTranslatef(sphere.pos.x, sphere.pos.y, sphere.pos.z);
glColor3f(0.9f, 1.0f, 0.0f);
glutSolidSphere(sphere.radius - 0.1, 50, 50);
glPopMatrix();
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
}
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glClearColor(1, 1, 1, 0); //white background
glEnable(GL_LIGHTING);
Vector ballLocation(10, -5, 5);
float timeStep = .5;
float radius = 3;
//cloth
cloth.clothCalculations();
cloth.gravity(Vector(0, 0, 0.2)*timeStep);
cloth.ballCollision(ballLocation, radius);
glTranslatef(-5, 5, -10);
glRotatef(120, 1, 0, 0);
cloth.draw();
//ball
glPushMatrix();
glColor3f(0.0f, 0.0f, 1.0f); //blue
glTranslatef(ballLocation.v[0], ballLocation.v[1], ballLocation.v[2]);
glutSolidSphere(radius-.1, 20, 20);
glPopMatrix();
glutSwapBuffers();
glutPostRedisplay();
}