void RodSoundApp::mouseDown(MouseEvent event)
{
if (event.isRight()) {
// Set targetPos to the ControlPoint we just clicked
if (!r) return;
Vec2i mouse = event.getPos();
Vec2i windowSize = getWindowSize();
Ray ray = cam.generateRay((real)mouse.x/windowSize.x,
1.0 - (real)mouse.y/windowSize.y,
getWindowAspectRatio());
real tmin = INFINITY;
bool any = false;
for (int i=0; i<r->numCPs(); i++) { // A bit slow, but beats keeping a KD-Tree updated
Sphere s(EtoC(r->cur().POS(i)), constants::radius * 1.5);
float t;
if (s.intersect(ray, &t) && t < tmin) {
any = true;
tmin = t;
}
}
if (!any) return;
targetPos = ray.calcPosition(tmin);
cam.lookAt(targetPos);
} else {
if (!running) return;
isMouseDown = true;
mouseDrag(event);
}
}
void gpuPSApp::computeAttractorPosition()
{
// The attractor is positioned at the intersection of a ray
// from the mouse to a plane perpendicular to the camera.
float t = 0;
Vec3f right, up;
mMayaCam.getCamera().getBillboardVectors(&right, &up);
CameraPersp cam = mMayaCam.getCamera();
float u = mMousePos.x / (float) getWindowWidth();
float v = mMousePos.y / (float) getWindowHeight();
Ray ray = cam.generateRay(u , 1.0f - v, cam.getAspectRatio() );
if (ray.calcPlaneIntersection(Vec3f(0.0f,0.0f,0.0f), right.cross(up), &t)) {
mAttractor.set(ray.calcPosition(t));
}
}
void RodSoundApp::mouseDrag(MouseEvent event)
{
if (!running) return;
Vec2i mouse = event.getPos();
Vec2i windowSize = getWindowSize();
Ray r = cam.generateRay((real)mouse.x/windowSize.x,
1.0 - (real)mouse.y/windowSize.y,
getWindowAspectRatio());
float t;
if(!r.calcPlaneIntersection(targetPos, targetPos-eyePos, &t)) {
std::cerr << "Mouse ray did not intersect plane!\n";
}
mousePosition = r.calcPosition(t);
}
void FiretrailApp::update()
{
const auto ray = mCamera.generateRay(getMousePos() - getWindowPos(), getWindowSize());
float result = .0f;
ray.calcPlaneIntersection(vec3(.0f, .0f, 5.0f), vec3(.0f, -2.0f, 1.0f), &result);
mHeadPosition += (ray.calcPosition(result) - mHeadPosition) * .8f;
mSpline.pushPoint(mHeadPosition);
const auto length = mSpline.getLength();
if (length <= .0f) return;
auto mappedPosAttrib = mVboMesh->mapAttrib3f( geom::POSITION );
const auto d = min(mMaxDSlice, length / (float)NUM_SPLINE_NODES);
for (size_t i = 0; i < NUM_SPLINE_NODES; ++i)
{
*mappedPosAttrib++ = mSpline.positionAtLength(d * i);
}
mappedPosAttrib.unmap();
mFps = getAverageFps();
if (mRecordingMovie)
{
if( mMovieExporter && getElapsedFrames() > 1 && getElapsedFrames() < MAX_MOVIE_FRAMES )
{
mMovieExporter->addFrame( copyWindowSurface() );
}
else if( mMovieExporter && getElapsedFrames() >= MAX_MOVIE_FRAMES )
{
endMovieRecording();
}
}
}