bool Image3DOverlay::findParabolaIntersection(const glm::vec3& origin, const glm::vec3& velocity, const glm::vec3& acceleration,
float& parabolicDistance, BoxFace& face, glm::vec3& surfaceNormal, bool precisionPicking) {
if (_texture && _texture->isLoaded()) {
Transform transform = getTransform();
// Produce the dimensions of the overlay based on the image's aspect ratio and the overlay's scale.
bool isNull = _fromImage.isNull();
float width = isNull ? _texture->getWidth() : _fromImage.width();
float height = isNull ? _texture->getHeight() : _fromImage.height();
float maxSize = glm::max(width, height);
glm::vec2 dimensions = _dimensions * glm::vec2(width / maxSize, height / maxSize);
glm::quat rotation = transform.getRotation();
glm::vec3 position = getWorldPosition();
glm::quat inverseRot = glm::inverse(rotation);
glm::vec3 localOrigin = inverseRot * (origin - position);
glm::vec3 localVelocity = inverseRot * velocity;
glm::vec3 localAcceleration = inverseRot * acceleration;
if (findParabolaRectangleIntersection(localOrigin, localVelocity, localAcceleration, dimensions, parabolicDistance)) {
float localIntersectionVelocityZ = localVelocity.z + localAcceleration.z * parabolicDistance;
glm::vec3 forward = rotation * Vectors::FRONT;
if (localIntersectionVelocityZ > 0.0f) {
face = MIN_Z_FACE;
surfaceNormal = forward;
} else {
face = MAX_Z_FACE;
surfaceNormal = -forward;
}
return true;
}
}
return false;
}
bool WebEntityItem::findDetailedParabolaIntersection(const glm::vec3& origin, const glm::vec3& velocity, const glm::vec3& acceleration,
OctreeElementPointer& element, float& parabolicDistance,
BoxFace& face, glm::vec3& surfaceNormal,
QVariantMap& extraInfo, bool precisionPicking) const {
glm::vec3 dimensions = getScaledDimensions();
glm::vec2 xyDimensions(dimensions.x, dimensions.y);
glm::quat rotation = getWorldOrientation();
glm::vec3 position = getWorldPosition() + rotation * (dimensions * (ENTITY_ITEM_DEFAULT_REGISTRATION_POINT - getRegistrationPoint()));
glm::quat inverseRot = glm::inverse(rotation);
glm::vec3 localOrigin = inverseRot * (origin - position);
glm::vec3 localVelocity = inverseRot * velocity;
glm::vec3 localAcceleration = inverseRot * acceleration;
if (findParabolaRectangleIntersection(localOrigin, localVelocity, localAcceleration, xyDimensions, parabolicDistance)) {
float localIntersectionVelocityZ = localVelocity.z + localAcceleration.z * parabolicDistance;
glm::vec3 forward = rotation * Vectors::FRONT;
if (localIntersectionVelocityZ > 0.0f) {
face = MIN_Z_FACE;
surfaceNormal = forward;
} else {
face = MAX_Z_FACE;
surfaceNormal = -forward;
}
return true;
} else {
return false;
}
}
