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Supports glTF morph (glTF 2.0, not tested)

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This commit is contained in:
Aurélien Chatelain 2017-05-24 09:54:55 +00:00
parent 8cb98950ff
commit 38a6a7565c
1 changed files with 28 additions and 1 deletions
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29
tiny_gltf_loader.h
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@ -447,6 +447,9 @@ struct Primitive {
// when rendering.
int indices; // The index of the accessor that contains the indices.
int mode; // one of TINYGLTF_MODE_***
std::vector<std::map<std::string, int> > targets; // array of morph targets,
//where each target is a dict with attribues in ["POSITION, "NORMAL", "TANGENT"] pointing
// to their corresponding accessors
Value extras;
Primitive()
@ -459,6 +462,8 @@ struct Primitive {
typedef struct {
std::string name;
std::vector<Primitive> primitives;
std::vector<double> weights; // weights to be applied to the Morph Targets
std::vector<std::map<std::string, int> >targets;
ParameterMap extensions;
Value extras;
} Mesh;
@ -483,7 +488,7 @@ class Node {
std::vector<double> scale; // length must be 0 or 3
std::vector<double> translation; // length must be 0 or 3
std::vector<double> matrix; // length must be 0 or 16
std::vector<std::string> meshes;
std::vector<double> weights; // The weights of the instantiated Morph Target
Value extras;
};
@ -1766,6 +1771,28 @@ static bool ParseMesh(Mesh *mesh, std::string *err, const picojson::object &o) {
}
}
// Look for morph targets
picojson::object::const_iterator targetsObject = o.find("targets");
if ((targetsObject != o.end()) && (targetsObject->second).is<picojson::array>()) {
const picojson::array &targetArray =
(targetsObject->second).get<picojson::array>();
for (size_t i = 0; i < targetArray.size(); i++) {
std::map<std::string, int> targetAttribues;
const picojson::object &dict = targetArray[i].get<picojson::object>();
picojson::object::const_iterator dictIt(dict.begin());
picojson::object::const_iterator dictItEnd(dict.end());
for (; dictIt != dictItEnd; ++dictIt) {
targetAttribues[dictIt->first] = static_cast<int>(dictIt->second.get<double>());
}
mesh->targets.push_back(targetAttribues);
}
}
// Should probably check if has targets and if dimensions fit
ParseNumberArrayProperty(&mesh->weights, err, o, "weights", false);
ParseExtrasProperty(&(mesh->extras), o);
return true;