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chore: implement mesh gltf export

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Jan
2024-04-27 10:35:00 +02:00
parent a39e993cc6
commit 07fa12b7f6
4 changed files with 251 additions and 10 deletions
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34
src/ObjCommon/XModel/Gltf/JsonGltf.h
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@ -102,16 +102,29 @@ namespace gltf
NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAccessor, bufferView, byteOffset, componentType, count, type, min, max);
enum class JsonBufferViewTarget
{
ARRAY_BUFFER = 34962,
ELEMENT_ARRAY_BUFFER = 34963
};
NLOHMANN_JSON_SERIALIZE_ENUM(JsonBufferViewTarget,
{
{JsonBufferViewTarget::ARRAY_BUFFER, static_cast<unsigned>(JsonBufferViewTarget::ARRAY_BUFFER) },
{JsonBufferViewTarget::ELEMENT_ARRAY_BUFFER, static_cast<unsigned>(JsonBufferViewTarget::ELEMENT_ARRAY_BUFFER)},
});
class JsonBufferView
{
public:
unsigned buffer;
unsigned byteLength;
unsigned byteOffset;
unsigned target;
std::optional<unsigned> byteOffset;
std::optional<unsigned> byteStride;
std::optional<JsonBufferViewTarget> target;
};
NLOHMANN_DEFINE_TYPE_EXTENSION(JsonBufferView, buffer, byteLength, byteOffset, target);
NLOHMANN_DEFINE_TYPE_EXTENSION(JsonBufferView, buffer, byteLength, byteOffset, byteStride, target);
enum class JsonAnimationChannelTargetPath
{
@ -211,10 +224,23 @@ namespace gltf
{JsonMeshPrimitivesMode::TRIANGLE_FAN, static_cast<unsigned>(JsonMeshPrimitivesMode::TRIANGLE_FAN) },
});
// This should probably be a map, but the supported models do not have arbitrary primitives anyway
class JsonMeshPrimitivesAttributes
{
public:
std::optional<unsigned> POSITION;
std::optional<unsigned> NORMAL;
std::optional<unsigned> TEXCOORD_0;
std::optional<unsigned> JOINTS_0;
std::optional<unsigned> WEIGHTS_0;
};
NLOHMANN_DEFINE_TYPE_EXTENSION(JsonMeshPrimitivesAttributes, POSITION, NORMAL, TEXCOORD_0, JOINTS_0, WEIGHTS_0);
class JsonMeshPrimitives
{
public:
std::unordered_map<std::string, unsigned> attributes;
JsonMeshPrimitivesAttributes attributes;
std::optional<unsigned> indices;
std::optional<unsigned> material;
std::optional<JsonMeshPrimitivesMode> mode;