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//
// Copyright 2013 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef SHAPE_UTILS_H
#define SHAPE_UTILS_H
#include <string>
#include <vector>
#include <map>
//------------------------------------------------------------------------------
enum Scheme {
kBilinear=0,
kCatmark,
kLoop
};
struct ShapeDesc
{
ShapeDesc(char const * iname, std::string const & idata, Scheme ischeme,
bool iIsLeftHanded = false) :
name(iname), data(idata), scheme(ischeme), isLeftHanded(iIsLeftHanded)
{ }
std::string name;
std::string data;
Scheme scheme;
bool isLeftHanded;
};
//------------------------------------------------------------------------------
struct Shape {
// full(er) spec here: http://paulbourke.net/dataformats/mtl/
struct material {
material();
std::string name;
float ka[3], // ambient
kd[3], // diffuse
ks[3], // specular
ns, // specular exponent
ni, // optical density (1.0=no refraction, glass=1.5)
sharpness, // reflection sharpness
tf[3], // transmission filter
d; // dissolve factor (1.0 = opaque)
int illum;
};
struct tag {
static tag * parseTag(char const * stream);
std::string genTag() const;
std::string name;
std::vector<int> intargs;
std::vector<float> floatargs;
std::vector<std::string> stringargs;
};
static Shape * parseObj(ShapeDesc const & shapeDesc, bool parsemtl=false);
static Shape * parseObj(char const * shapeString, Scheme shapeScheme,
bool isLeftHanded=false, bool parsemtl=false);
void parseMtllib(char const * stream);
std::string genShape(char const * name) const;
std::string genObj() const;
std::string genRIB() const;
Shape() : scheme(kCatmark), isLeftHanded(false) { }
~Shape();
int GetNumVertices() const { return (int)verts.size()/3; }
int GetNumFaces() const { return (int)nvertsPerFace.size(); }
bool HasUV() const { return ! (uvs.empty() || faceuvs.empty()); }
int GetFVarWidth() const { return HasUV() ? 2 : 0; }
std::vector<float> verts;
std::vector<float> uvs;
std::vector<float> normals;
std::vector<int> nvertsPerFace;
std::vector<int> faceverts;
std::vector<int> faceuvs;
std::vector<int> facenormals;
std::vector<tag *> tags;
Scheme scheme;
bool isLeftHanded;
char FindMaterial(char const * name) {
for (int i=0; i<(int)mtls.size(); ++i) {
if (mtls[i]->name==name) {
return (char) i;
}
}
return -1;
}
std::string mtllib;
std::vector<unsigned short> mtlbind;
std::vector<material *> mtls;
};
//------------------------------------------------------------------------------
#endif /* SHAPE_UTILS_H */
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