mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-04 00:41:05 +00:00
c399655dcc
Sync'ing the 'dev' branch with the 'feature_3.0dev' branch at commit 68c6d11fc36761ae1a5e6cdc3457be16f2e9704a The branch 'feature_3.0dev' is now locked and preserved for historical purposes.
306 lines
11 KiB
C++
306 lines
11 KiB
C++
//
|
|
// 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.
|
|
//
|
|
|
|
|
|
#include "shape_utils.h"
|
|
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
#include <iterator>
|
|
#include <sstream>
|
|
|
|
//------------------------------------------------------------------------------
|
|
static char const * sgets( char * s, int size, char ** stream ) {
|
|
for (int i=0; i<size; ++i) {
|
|
if ( (*stream)[i]=='\n' or (*stream)[i]=='\0') {
|
|
|
|
memcpy(s, *stream, i);
|
|
s[i]='\0';
|
|
|
|
if ((*stream)[i]=='\0')
|
|
return 0;
|
|
else {
|
|
(*stream) += i+1;
|
|
return s;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
Shape::~Shape() {
|
|
for (int i=0; i<(int)tags.size(); ++i)
|
|
delete tags[i];
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
Shape * Shape::parseObj(char const * shapestr, Scheme shapescheme, int axis ) {
|
|
|
|
Shape * s = new Shape;
|
|
|
|
s->scheme = shapescheme;
|
|
|
|
char * str=const_cast<char *>(shapestr), line[256];
|
|
bool done = false;
|
|
while( not done )
|
|
{ done = sgets(line, sizeof(line), &str)==0;
|
|
char* end = &line[strlen(line)-1];
|
|
if (*end == '\n') *end = '\0'; // strip trailing nl
|
|
float x, y, z, u, v;
|
|
switch (line[0]) {
|
|
case 'v': switch (line[1])
|
|
{ case ' ': if(sscanf(line, "v %f %f %f", &x, &y, &z) == 3) {
|
|
s->verts.push_back(x);
|
|
switch( axis ) {
|
|
case 0 : s->verts.push_back(-z);
|
|
s->verts.push_back(y); break;
|
|
case 1 : s->verts.push_back(y);
|
|
s->verts.push_back(z); break;
|
|
}
|
|
} break;
|
|
case 't': if(sscanf(line, "vt %f %f", &u, &v) == 2) {
|
|
s->uvs.push_back(u);
|
|
s->uvs.push_back(v);
|
|
} break;
|
|
case 'n' : if(sscanf(line, "vn %f %f %f", &x, &y, &z) == 3) {
|
|
s->normals.push_back(x);
|
|
s->normals.push_back(y);
|
|
s->normals.push_back(z);
|
|
}
|
|
break; // skip normals for now
|
|
}
|
|
break;
|
|
case 'f': if(line[1] == ' ') {
|
|
int vi, ti, ni;
|
|
const char* cp = &line[2];
|
|
while (*cp == ' ') cp++;
|
|
int nverts = 0, nitems=0;
|
|
while( (nitems=sscanf(cp, "%d/%d/%d", &vi, &ti, &ni))>0) {
|
|
nverts++;
|
|
s->faceverts.push_back(vi-1);
|
|
if(nitems >= 1) s->faceuvs.push_back(ti-1);
|
|
if(nitems >= 2) s->facenormals.push_back(ni-1);
|
|
while (*cp && *cp != ' ') cp++;
|
|
while (*cp == ' ') cp++;
|
|
}
|
|
s->nvertsPerFace.push_back(nverts);
|
|
}
|
|
break;
|
|
case 't' : if(line[1] == ' ') {
|
|
Shape::tag * t = tag::parseTag( line );
|
|
if (t)
|
|
s->tags.push_back(t);
|
|
} break;
|
|
}
|
|
}
|
|
return s;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
Shape::tag * Shape::tag::parseTag(char const * line) {
|
|
tag * t = 0;
|
|
|
|
const char* cp = &line[2];
|
|
|
|
char tname[50];
|
|
while (*cp == ' ') cp++;
|
|
if (sscanf(cp, "%s", tname )!=1) return t;
|
|
while (*cp && *cp != ' ') cp++;
|
|
|
|
int nints=0, nfloats=0, nstrings=0;
|
|
while (*cp == ' ') cp++;
|
|
if (sscanf(cp, "%d/%d/%d", &nints, &nfloats, &nstrings)!=3) return t;
|
|
while (*cp && *cp != ' ') cp++;
|
|
|
|
std::vector<int> tintargs;
|
|
for (int i=0; i<nints; ++i) {
|
|
int val;
|
|
while (*cp == ' ') cp++;
|
|
if (sscanf(cp, "%d", &val)!=1) return t;
|
|
tintargs.push_back(val);
|
|
while (*cp && *cp != ' ') cp++;
|
|
}
|
|
|
|
std::vector<float> tfloatargs;
|
|
for (int i=0; i<nfloats; ++i) {
|
|
float val;
|
|
while (*cp == ' ') cp++;
|
|
if (sscanf(cp, "%f", &val)!=1) return t;
|
|
tfloatargs.push_back(val);
|
|
while (*cp && *cp != ' ') cp++;
|
|
}
|
|
|
|
std::vector<std::string> tstringargs;
|
|
for (int i=0; i<nstrings; ++i) {
|
|
char val[512];
|
|
while (*cp == ' ') cp++;
|
|
if (sscanf(cp, "%s", val)!=1) return t;
|
|
tstringargs.push_back(std::string(val));
|
|
while (*cp && *cp != ' ') cp++;
|
|
}
|
|
|
|
t = new Shape::tag;
|
|
t->name = tname;
|
|
t->intargs = tintargs;
|
|
t->floatargs = tfloatargs;
|
|
t->stringargs = tstringargs;
|
|
|
|
return t;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
std::string Shape::tag::genTag() const {
|
|
std::stringstream t;
|
|
|
|
t<<"\"t \""<<name<<"\" ";
|
|
|
|
t<<intargs.size()<<"/"<<floatargs.size()<<"/"<<stringargs.size()<<" ";
|
|
|
|
std::copy(intargs.begin(), intargs.end(), std::ostream_iterator<int>(t));
|
|
t<<" ";
|
|
|
|
std::copy(floatargs.begin(), floatargs.end(), std::ostream_iterator<float>(t));
|
|
t<<" ";
|
|
|
|
std::copy(stringargs.begin(), stringargs.end(), std::ostream_iterator<std::string>(t));
|
|
t<<"\\n\"\n";
|
|
|
|
return t.str();
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
std::string Shape::genShape(char const * name) const {
|
|
std::stringstream sh;
|
|
|
|
sh<<"static char const * "<<name<<" = \n";
|
|
|
|
for (int i=0; i<(int)verts.size(); i+=3)
|
|
sh << "\"v " << verts[i] << " " << verts[i+1] << " " << verts[i+2] <<"\\n\"\n";
|
|
|
|
for (int i=0; i<(int)uvs.size(); i+=2)
|
|
sh << "\"vt " << uvs[i] << " " << uvs[i+1] << "\\n\"\n";
|
|
|
|
for (int i=0; i<(int)normals.size(); i+=3)
|
|
sh << "\"vn " << normals[i] << " " << normals[i+1] << " " << normals[i+2] <<"\\n\"\n";
|
|
|
|
sh << "\"s off\\n\"\n";
|
|
|
|
for (int i=0, idx=0; i<(int)nvertsPerFace.size();++i) {
|
|
sh << "\"f ";
|
|
for (int j=0; j<nvertsPerFace[i];++j) {
|
|
int vert = faceverts[idx+j]+1,
|
|
uv = (int)faceuvs.size()>0 ? faceuvs[idx+j]+1 : vert,
|
|
normal = (int)facenormals.size()>0 ? facenormals[idx+j]+1 : vert;
|
|
sh << vert << "/" << uv << "/" << normal << " ";
|
|
}
|
|
sh << "\\n\"\n";
|
|
idx+=nvertsPerFace[i];
|
|
}
|
|
|
|
for (int i=0; i<(int)tags.size(); ++i)
|
|
sh << tags[i]->genTag();
|
|
|
|
return sh.str();
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
std::string Shape::genObj() const {
|
|
std::stringstream sh;
|
|
|
|
sh<<"# This file uses centimeters as units for non-parametric coordinates.\n\n";
|
|
|
|
for (int i=0; i<(int)verts.size(); i+=3)
|
|
sh << "v " << verts[i] << " " << verts[i+1] << " " << verts[i+2] <<"\n";
|
|
|
|
for (int i=0; i<(int)uvs.size(); i+=2)
|
|
sh << "vt " << uvs[i] << " " << uvs[i+1] << "\n";
|
|
|
|
for (int i=0; i<(int)normals.size(); i+=3)
|
|
sh << "vn " << normals[i] << " " << normals[i+1] << " " << normals[i+2] <<"\n";
|
|
|
|
for (int i=0, idx=0; i<(int)nvertsPerFace.size();++i) {
|
|
sh << "f ";
|
|
for (int j=0; j<nvertsPerFace[i];++j) {
|
|
int vert = faceverts[idx+j]+1,
|
|
uv = (int)faceuvs.size()>0 ? faceuvs[idx+j]+1 : vert,
|
|
normal = (int)facenormals.size()>0 ? facenormals[idx+j]+1 : vert;
|
|
sh << vert << "/" << uv << "/" << normal << " ";
|
|
}
|
|
sh << "\n";
|
|
idx+=nvertsPerFace[i];
|
|
}
|
|
|
|
for (int i=0; i<(int)tags.size(); ++i)
|
|
sh << tags[i]->genTag();
|
|
|
|
return sh.str();
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
std::string Shape::genRIB() const {
|
|
std::stringstream rib;
|
|
|
|
rib << "HierarchicalSubdivisionMesh \"catmull-clark\" ";
|
|
|
|
rib << "[";
|
|
std::copy(nvertsPerFace.begin(), nvertsPerFace.end(), std::ostream_iterator<int>(rib));
|
|
rib << "] ";
|
|
|
|
rib << "[";
|
|
std::copy(faceverts.begin(), faceverts.end(), std::ostream_iterator<int>(rib));
|
|
rib << "] ";
|
|
|
|
std::stringstream names, nargs, intargs, floatargs, strargs;
|
|
for (int i=0; i<(int)tags.size();) {
|
|
tag * t = tags[i];
|
|
|
|
names << t->name;
|
|
|
|
nargs << t->intargs.size() << " " << t->floatargs.size() << " " << t->stringargs.size();
|
|
|
|
std::copy(t->intargs.begin(), t->intargs.end(), std::ostream_iterator<int>(intargs));
|
|
|
|
std::copy(t->floatargs.begin(), t->floatargs.end(), std::ostream_iterator<float>(floatargs));
|
|
|
|
std::copy(t->stringargs.begin(), t->stringargs.end(), std::ostream_iterator<std::string>(strargs));
|
|
|
|
if (++i<(int)tags.size()) {
|
|
names << " ";
|
|
nargs << " ";
|
|
intargs << " ";
|
|
floatargs << " ";
|
|
strargs << " ";
|
|
}
|
|
}
|
|
|
|
rib << "["<<names.str()<<"] " << "["<<nargs.str()<<"] " << "["<<intargs.str()<<"] " << "["<<floatargs.str()<<"] " << "["<<strargs.str()<<"] ";
|
|
|
|
rib << "\"P\" [";
|
|
std::copy(verts.begin(), verts.end(), std::ostream_iterator<float>(rib));
|
|
rib << "] ";
|
|
|
|
return rib.str();
|
|
}
|