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; } }