void CollisionPick::computeShapeInfo(const CollisionRegion& pick, ShapeInfo& shapeInfo, QSharedPointer<GeometryResource> resource) {
// This code was copied and modified from RenderableModelEntityItem::computeShapeInfo
// TODO: Move to some shared code area (in entities-renderer? model-networking?)
// after we verify this is working and do a diff comparison with RenderableModelEntityItem::computeShapeInfo
// to consolidate the code.
// We may also want to make computeShapeInfo always abstract away from the gpu model mesh, like it does here.
const uint32_t TRIANGLE_STRIDE = 3;
const uint32_t QUAD_STRIDE = 4;
ShapeType type = shapeInfo.getType();
glm::vec3 dimensions = pick.transform.getScale();
if (type == SHAPE_TYPE_COMPOUND) {
// should never fall in here when collision model not fully loaded
// TODO: assert that all geometries exist and are loaded
//assert(_model && _model->isLoaded() && _compoundShapeResource && _compoundShapeResource->isLoaded());
const HFMModel& collisionModel = resource->getHFMModel();
ShapeInfo::PointCollection& pointCollection = shapeInfo.getPointCollection();
pointCollection.clear();
uint32_t i = 0;
// the way OBJ files get read, each section under a "g" line is its own meshPart. We only expect
// to find one actual "mesh" (with one or more meshParts in it), but we loop over the meshes, just in case.
foreach (const HFMMesh& mesh, collisionModel.meshes) {
// each meshPart is a convex hull
foreach (const HFMMeshPart &meshPart, mesh.parts) {
pointCollection.push_back(QVector<glm::vec3>());
ShapeInfo::PointList& pointsInPart = pointCollection[i];
// run through all the triangles and (uniquely) add each point to the hull
uint32_t numIndices = (uint32_t)meshPart.triangleIndices.size();
// TODO: assert rather than workaround after we start sanitizing HFMMesh higher up
//assert(numIndices % TRIANGLE_STRIDE == 0);
numIndices -= numIndices % TRIANGLE_STRIDE; // WORKAROUND lack of sanity checking in FBXSerializer
for (uint32_t j = 0; j < numIndices; j += TRIANGLE_STRIDE) {
glm::vec3 p0 = mesh.vertices[meshPart.triangleIndices[j]];
glm::vec3 p1 = mesh.vertices[meshPart.triangleIndices[j + 1]];
glm::vec3 p2 = mesh.vertices[meshPart.triangleIndices[j + 2]];
if (!pointsInPart.contains(p0)) {
pointsInPart << p0;
}
if (!pointsInPart.contains(p1)) {
pointsInPart << p1;
}
if (!pointsInPart.contains(p2)) {
pointsInPart << p2;
}
}
// run through all the quads and (uniquely) add each point to the hull
numIndices = (uint32_t)meshPart.quadIndices.size();
// TODO: assert rather than workaround after we start sanitizing HFMMesh higher up
//assert(numIndices % QUAD_STRIDE == 0);
numIndices -= numIndices % QUAD_STRIDE; // WORKAROUND lack of sanity checking in FBXSerializer
for (uint32_t j = 0; j < numIndices; j += QUAD_STRIDE) {
glm::vec3 p0 = mesh.vertices[meshPart.quadIndices[j]];
glm::vec3 p1 = mesh.vertices[meshPart.quadIndices[j + 1]];
glm::vec3 p2 = mesh.vertices[meshPart.quadIndices[j + 2]];
glm::vec3 p3 = mesh.vertices[meshPart.quadIndices[j + 3]];
if (!pointsInPart.contains(p0)) {
pointsInPart << p0;
}
if (!pointsInPart.contains(p1)) {
pointsInPart << p1;
}
if (!pointsInPart.contains(p2)) {
pointsInPart << p2;
}
if (!pointsInPart.contains(p3)) {
pointsInPart << p3;
}
}
if (pointsInPart.size() == 0) {
qCDebug(scriptengine) << "Warning -- meshPart has no faces";
pointCollection.pop_back();
continue;
}
++i;
}
}
// We expect that the collision model will have the same units and will be displaced
// from its origin in the same way the visual model is. The visual model has
// been centered and probably scaled. We take the scaling and offset which were applied
// to the visual model and apply them to the collision model (without regard for the
// collision model's extents).
glm::vec3 scaleToFit = dimensions / resource->getHFMModel().getUnscaledMeshExtents().size();
// multiply each point by scale
for (int32_t i = 0; i < pointCollection.size(); i++) {
for (int32_t j = 0; j < pointCollection[i].size(); j++) {
// back compensate for registration so we can apply that offset to the shapeInfo later
pointCollection[i][j] = scaleToFit * pointCollection[i][j];
}
}
shapeInfo.setParams(type, dimensions, resource->getURL().toString());
} else if (type >= SHAPE_TYPE_SIMPLE_HULL && type <= SHAPE_TYPE_STATIC_MESH) {
