bool TriangleMesh::intersects(const Ray &ray, Intersection* inter) const {
/* the first time its called, generate all triangles and cache it for reuse */
if (!cache) {
generateCache();
}
Intersection in, temp;
in.t = INFINITY;
bool intersected = false;
for (int i = 0; i < numtriangles; i++) {
if (cache[i].intersects(ray, &temp)) {
if (temp.t < in.t) {
in = temp;
intersected = true;
}
}
}
if (intersected) {
if (inter) {
inter->copy(in);
inter->object = (TriangleMesh*)this;
}
return true;
}
return false;
}
void ImageView::queueGenerateCache()
{
if (!m_item)
return;
if (!m_cachedPixmap.isNull())
m_cachedPixmap = QPixmap();
if (m_scaleFactor == 1.0) {
if (m_cacheTimer) {
m_cacheTimer->stop();
delete m_cacheTimer;
m_cacheTimer = 0;
}
return;
}
if (!m_cacheTimer) {
m_cacheTimer = new QTimer();
m_cacheTimer->setSingleShot(true);
connect(m_cacheTimer, SIGNAL(timeout()), SLOT(generateCache()));
}
m_cacheTimer->start(20);
}
Real TriangleMesh::getArea() const{
if (!cache)
generateCache();
return area;
}