git.s-ol.nu ~forks/DiligentTools / gltf-c-api
Give access to individual node transforms s-ol 23 days ago
3 changed file(s) with 86 addition(s) and 15 deletion(s). Raw diff Collapse all Expand all
228228 float4x4 matrix;
229229 };
230230
231 struct GLTF_Transform
232 {
233 float3 Translation;
234 float _pad0;
235 float3 Scale = float3{1, 1, 1};
236 float _pad1;
237 Quaternion Rotation;
238 float4x4 Matrix;
239 };
240
231241 struct Node
232242 {
233243 std::string Name;
236246
237247 std::vector<std::unique_ptr<Node>> Children;
238248
239 float4x4 Matrix;
240249 std::unique_ptr<Mesh> pMesh;
241250 std::unique_ptr<Camera> pCamera;
242251 Skin* pSkin = nullptr;
243252 Int32 SkinIndex = -1;
244 float3 Translation;
245 float3 Scale = float3{1, 1, 1};
246 Quaternion Rotation;
253 GLTF_Transform Transform;
254 // float3 Translation;
255 // float3 Scale = float3{1, 1, 1};
256 // Quaternion Rotation;
257 // float4x4 Matrix;
247258 BoundBox BVH;
248259 BoundBox AABB;
249260
383394 return VertBuff.pSuballocation ?
384395 static_cast<Uint32>(VertBuff.pSuballocation->GetOffset() / sizeof(VertexBasicAttribs)) :
385396 0;
397 }
398
399 virtual bool GetNodeIndex(const char* Name, Uint32* Idx) const override final
400 {
401 uint32_t i = 0;
402 for (auto* node : LinearNodes)
403 {
404 if (node->Name.compare(Name) == 0)
405 {
406 *Idx = i;
407 return true;
408 }
409 i++;
410 }
411
412 return false;
413 }
414
415 virtual void GetNodeTransform(Uint32 Idx, GLTF_Transform* Transform) override final
416 {
417 *Transform = LinearNodes[Idx]->Transform;
418 }
419
420 virtual void SetNodeTransform(Uint32 Idx, GLTF_Transform* Transform) override final
421 {
422 LinearNodes[Idx]->Transform = *Transform;
423 }
424
425 virtual void UpdateTransforms() override final
426 {
427 for (auto& root_node : Nodes)
428 {
429 root_node->UpdateTransforms();
430 }
431 CalculateSceneDimensions();
386432 }
387433
388434 private:
4545
4646 #if DILIGENT_CPP_INTERFACE
4747 class ResourceManager;
48
49 struct GLTF_Transform;
4850 #else
4951 struct ResourceManager;
5052 typedef struct ResourceManager ResourceManager;
53
54 struct GLTF_Transform
55 {
56 float Translation[3];
57 float _pad0;
58 float Scale[3];
59 float _pad1;
60 float Rotation[4];
61 float Matrix[4*4];
62 };
63 typedef struct GLTF_Transform GLTF_Transform;
5164 #endif
5265
5366 struct GLTF_ResourceCacheUseInfo
167180 VIRTUAL IBuffer* METHOD(GetBuffer)(THIS_ GLTF_BUFFER_ID BuffId) PURE;
168181
169182 VIRTUAL ITexture* METHOD(GetTexture)(THIS_ Uint32 Index) PURE;
183
184 VIRTUAL bool METHOD(GetNodeIndex)(THIS_ const char* Name, Uint32* Idx) CONST PURE;
185
186 VIRTUAL void METHOD(GetNodeTransform)(THIS_ Uint32 Idx, GLTF_Transform* Transform) PURE;
187
188 VIRTUAL void METHOD(SetNodeTransform)(THIS_ Uint32 Idx, GLTF_Transform* Transform) PURE;
189
190 VIRTUAL void METHOD(UpdateTransforms)(THIS) PURE;
170191
171192 VIRTUAL Uint32 METHOD(GetFirstIndexLocation)(THIS) CONST PURE;
172193
184205 # define IGLTFModel_Transform(This, ...) CALL_IFACE_METHOD(GLTF_Model, Transform, This, __VA_ARGS__)
185206 # define IGLTFModel_GetBuffer(This, ...) CALL_IFACE_METHOD(GLTF_Model, GetBuffer, This, __VA_ARGS__)
186207 # define IGLTFModel_GetTexture(This, ...) CALL_IFACE_METHOD(GLTF_Model, GetTexture, This, __VA_ARGS__)
208 # define IGLTFModel_GetNodeIndex(This, ...) CALL_IFACE_METHOD(GLTF_Model, GetNodeIndex, This, __VA_ARGS__)
209 # define IGLTFModel_GetNodeTransform(This, ...) CALL_IFACE_METHOD(GLTF_Model, GetNodeTransform, This, __VA_ARGS__)
210 # define IGLTFModel_SetNodeTransform(This, ...) CALL_IFACE_METHOD(GLTF_Model, SetNodeTransform, This, __VA_ARGS__)
211 # define IGLTFModel_UpdateTransforms(This) CALL_IFACE_METHOD(GLTF_Model, UpdateTransforms, This)
187212 # define IGLTFModel_GetFirstIndexLocation(This) CALL_IFACE_METHOD(GLTF_Model, GetFirstIndexLocation, This)
188213 # define IGLTFModel_GetBaseVertex(This) CALL_IFACE_METHOD(GLTF_Model, GetBaseVertex, This)
189214
196196 // Translation, rotation, and scale properties and local space transformation are
197197 // mutually exclusive in GLTF.
198198 // We, however, may use non-trivial Matrix with TRS to apply transform to a model.
199 return float4x4::Scale(Scale) * Rotation.ToMatrix() * float4x4::Translation(Translation) * Matrix;
199 return float4x4::Scale(Transform.Scale) * Transform.Rotation.ToMatrix() * float4x4::Translation(Transform.Translation) * Transform.Matrix;
200200 }
201201
202202 float4x4 Node::GetMatrix() const
275275 NewNode->Parent = parent;
276276 NewNode->Name = gltf_node.name;
277277 NewNode->SkinIndex = gltf_node.skin;
278 NewNode->Matrix = float4x4::Identity();
278 NewNode->Transform.Matrix = float4x4::Identity();
279279
280280 // Any node can define a local space transformation either by supplying a matrix property,
281281 // or any of translation, rotation, and scale properties (also known as TRS properties).
284284 //float3 Translation;
285285 if (gltf_node.translation.size() == 3)
286286 {
287 NewNode->Translation = float3::MakeVector(gltf_node.translation.data());
287 NewNode->Transform.Translation = float3::MakeVector(gltf_node.translation.data());
288288 }
289289
290290 if (gltf_node.rotation.size() == 4)
291291 {
292 NewNode->Rotation.q = float4::MakeVector(gltf_node.rotation.data());
292 NewNode->Transform.Rotation.q = float4::MakeVector(gltf_node.rotation.data());
293293 //NewNode->rotation = glm::mat4(q);
294294 }
295295
296296 if (gltf_node.scale.size() == 3)
297297 {
298 NewNode->Scale = float3::MakeVector(gltf_node.scale.data());
298 NewNode->Transform.Scale = float3::MakeVector(gltf_node.scale.data());
299299 }
300300
301301 if (gltf_node.matrix.size() == 16)
302302 {
303 NewNode->Matrix = float4x4::MakeMatrix(gltf_node.matrix.data());
303 NewNode->Transform.Matrix = float4x4::MakeMatrix(gltf_node.matrix.data());
304304 }
305305
306306 // Node with children
317317 if (gltf_node.mesh >= 0)
318318 {
319319 const tinygltf::Mesh& gltf_mesh = gltf_model.meshes[gltf_node.mesh];
320 std::unique_ptr<Mesh> pNewMesh{new Mesh{NewNode->Matrix}};
320 std::unique_ptr<Mesh> pNewMesh{new Mesh{NewNode->Transform.Matrix}};
321321 for (size_t j = 0; j < gltf_mesh.primitives.size(); j++)
322322 {
323323 const tinygltf::Primitive& primitive = gltf_mesh.primitives[j];
20162016 case AnimationChannel::PATH_TYPE::TRANSLATION:
20172017 {
20182018 float4 trans = lerp(sampler.OutputsVec4[i], sampler.OutputsVec4[i + 1], u);
2019 channel.pNode->Translation = float3(trans);
2019 channel.pNode->Transform.Translation = float3(trans);
20202020 break;
20212021 }
20222022
20232023 case AnimationChannel::PATH_TYPE::SCALE:
20242024 {
20252025 float4 scale = lerp(sampler.OutputsVec4[i], sampler.OutputsVec4[i + 1], u);
2026 channel.pNode->Scale = float3(scale);
2026 channel.pNode->Transform.Scale = float3(scale);
20272027 break;
20282028 }
20292029
20412041 q2.q.z = sampler.OutputsVec4[i + 1].z;
20422042 q2.q.w = sampler.OutputsVec4[i + 1].w;
20432043
2044 channel.pNode->Rotation = normalize(slerp(q1, q2, u));
2044 channel.pNode->Transform.Rotation = normalize(slerp(q1, q2, u));
20452045 break;
20462046 }
20472047 }
20652065 auto Matrix = float4x4::MakeMatrix(_Matrix);
20662066 for (auto& root_node : Nodes)
20672067 {
2068 root_node->Matrix *= Matrix;
2068 root_node->Transform.Matrix *= Matrix;
20692069 root_node->UpdateTransforms();
20702070 }
20712071