/*
* D3DParticleVelocityUpdate: Updates the velocity and position of a particle.
*/
void D3DParticleVelocityUpdate(emitter *pEmitter, particle *pParticle)
{
D3DMATRIX rotate, matrix;
custom_xyzw velocity;
if (pEmitter->emitterFlags & PS_GRAVITY)
pParticle->velocity.z -= 0.5f;
velocity.x = pParticle->velocity.x;
velocity.y = pParticle->velocity.y;
velocity.z = pParticle->velocity.z;
velocity.w = 1.0f;
MatrixRotateX(&matrix, pParticle->rotation.x);
MatrixRotateY(&rotate, pParticle->rotation.y);
MatrixMultiply(&rotate, &matrix, &rotate);
MatrixRotateZ(&matrix, pParticle->rotation.z);
MatrixMultiply(&rotate, &rotate, &matrix);
MatrixMultiplyVector(&velocity, &rotate, &velocity);
pParticle->velocity.x = velocity.x;
pParticle->velocity.y = velocity.y;
pParticle->velocity.z = velocity.z;
pParticle->oldPos.x = pParticle->pos.x;
pParticle->oldPos.y = pParticle->pos.y;
pParticle->oldPos.z = pParticle->pos.z;
pParticle->pos.x += pParticle->velocity.x;
pParticle->pos.y += pParticle->velocity.y;
pParticle->pos.z += pParticle->velocity.z;
}
void Animation::transformCamera(float dx, float dy)
{
bool a = timer.isActive();
if (a)
timer.stop();
weak_ptr<Camera> camera = animationScene->camera();
if (camera.expired())
return;
shared_ptr<Camera> activeCamera = camera.lock();
activeCamera->transform(MatrixRotateY(qDegreesToRadians(-dx/2)).create());
activeCamera->transform(MatrixRotateX(qDegreesToRadians(dy/2)).create());
animationScene->renderModels();
if (a)
timer.start();
}
