mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-12 15:10:33 +00:00
b7470bb26f
- added definition to regression/common/shape_utils.h
- removed examples/common/shapeDesc.h and all references to it
- removed local definitions of ShapeDesc from examples, regressions, etc.
- overloaded Shape::parseObj() with ShapeDesc
- updated examples to use Shape::parseObj(ShapeDesc const&);
- removed axis argument to Shape::ParseObj() and ObjAnim::Create()
376 lines
12 KiB
C++
376 lines
12 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#include <cassert>
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#include <cstdio>
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#include "../../regression/common/hbr_utils.h"
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#include "../../regression/common/far_utils.h"
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#include "../../regression/common/cmp_utils.h"
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#include "init_shapes.h"
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//
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// Regression testing matching Far to Hbr (default CPU implementation)
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//
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// Notes:
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// - precision is currently held at 1e-6
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//
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// - results cannot be bitwise identical as some vertex interpolations
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// are not happening in the same order.
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//
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// - only vertex interpolation is being tested at the moment.
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//
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#define PRECISION 1e-6
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static bool g_debugmode = false;
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//------------------------------------------------------------------------------
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// Vertex class implementation
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struct xyzVV {
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xyzVV() { /* _pos[0]=_pos[1]=_pos[2]=0.0f; */ }
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xyzVV( int /*i*/ ) { }
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xyzVV( float x, float y, float z ) { _pos[0]=x; _pos[1]=y; _pos[2]=z; }
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xyzVV( const xyzVV & src ) { _pos[0]=src._pos[0]; _pos[1]=src._pos[1]; _pos[2]=src._pos[2]; }
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~xyzVV( ) { }
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void AddWithWeight(const xyzVV& src, float weight) {
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_pos[0]+=weight*src._pos[0];
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_pos[1]+=weight*src._pos[1];
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_pos[2]+=weight*src._pos[2];
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}
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void AddVaryingWithWeight(const xyzVV& , float) { }
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void Clear( void * =0 ) { _pos[0]=_pos[1]=_pos[2]=0.0f; }
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void SetPosition(float x, float y, float z) { _pos[0]=x; _pos[1]=y; _pos[2]=z; }
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void ApplyVertexEdit(const OpenSubdiv::HbrVertexEdit<xyzVV> & edit) {
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const float *src = edit.GetEdit();
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switch(edit.GetOperation()) {
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case OpenSubdiv::HbrHierarchicalEdit<xyzVV>::Set:
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_pos[0] = src[0];
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_pos[1] = src[1];
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_pos[2] = src[2];
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break;
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case OpenSubdiv::HbrHierarchicalEdit<xyzVV>::Add:
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_pos[0] += src[0];
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_pos[1] += src[1];
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_pos[2] += src[2];
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break;
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case OpenSubdiv::HbrHierarchicalEdit<xyzVV>::Subtract:
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_pos[0] -= src[0];
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_pos[1] -= src[1];
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_pos[2] -= src[2];
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break;
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}
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}
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void ApplyMovingVertexEdit(const OpenSubdiv::HbrMovingVertexEdit<xyzVV> &) { }
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const float * GetPos() const { return _pos; }
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bool operator==(xyzVV const & other) const {
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if (_pos[0]==other._pos[0] &&
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_pos[1]==other._pos[1] &&
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_pos[2]==other._pos[2]) {
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return true;
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}
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return false;
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}
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private:
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float _pos[3];
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};
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//------------------------------------------------------------------------------
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typedef OpenSubdiv::HbrMesh<xyzVV> Hmesh;
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//------------------------------------------------------------------------------
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typedef OpenSubdiv::Sdc::Options SdcOptions;
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typedef OpenSubdiv::Far::TopologyLevel FarTopologyLevel;
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typedef OpenSubdiv::Far::TopologyRefiner FarTopologyRefiner;
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typedef OpenSubdiv::Far::TopologyRefinerFactory<Shape> FarTopologyRefinerFactory;
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//------------------------------------------------------------------------------
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#ifdef foo
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static void
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printVertexData(std::vector<xyzVV> const & hbrBuffer, std::vector<xyzVV> const & farBuffer) {
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assert(hbrBuffer.size()==farBuffer.size());
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for (int i=0; i<(int)hbrBuffer.size(); ++i) {
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float const * hbr = hbrBuffer[i].GetPos(),
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* far = farBuffer[i].GetPos();
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printf("%3d %d (%f %f %f) (%f %f %f)\n", i, hbrBuffer[i]==farBuffer[i],
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hbr[0], hbr[1], hbr[2],
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far[0], far[1], far[2]);
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}
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}
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#endif
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//------------------------------------------------------------------------------
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static int
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compareVertexData(std::vector<xyzVV> const& farVertexData, std::vector<xyzVV> const& hbrVertexData) {
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int count=0;
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float deltaAvg[3] = {0.0f, 0.0f, 0.0f},
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deltaCnt[3] = {0.0f, 0.0f, 0.0f};
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int nverts = (int)farVertexData.size();
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for (int i=0; i<nverts; ++i) {
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xyzVV const & hbrVert = hbrVertexData[i];
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xyzVV const & farVert = farVertexData[i];
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#ifdef __INTEL_COMPILER // remark #1572: floating-point equality and inequality comparisons are unreliable
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#pragma warning disable 1572
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#endif
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if ( hbrVert.GetPos()[0] != farVert.GetPos()[0] )
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deltaCnt[0]++;
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if ( hbrVert.GetPos()[1] != farVert.GetPos()[1] )
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deltaCnt[1]++;
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if ( hbrVert.GetPos()[2] != farVert.GetPos()[2] )
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deltaCnt[2]++;
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#ifdef __INTEL_COMPILER
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#pragma warning enable 1572
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#endif
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float delta[3] = { hbrVert.GetPos()[0] - farVert.GetPos()[0],
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hbrVert.GetPos()[1] - farVert.GetPos()[1],
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hbrVert.GetPos()[2] - farVert.GetPos()[2] };
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deltaAvg[0]+=delta[0];
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deltaAvg[1]+=delta[1];
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deltaAvg[2]+=delta[2];
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float dist = sqrtf( delta[0]*delta[0]+delta[1]*delta[1]+delta[2]*delta[2]);
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if ( dist > PRECISION ) {
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if (! g_debugmode)
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printf("// HbrVertex<T> %d fails : dist=%.10f (%.10f %.10f %.10f)"
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" (%.10f %.10f %.10f)\n", i, dist, hbrVert.GetPos()[0],
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hbrVert.GetPos()[1],
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hbrVert.GetPos()[2],
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farVert.GetPos()[0],
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farVert.GetPos()[1],
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farVert.GetPos()[2] );
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count++;
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}
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}
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if (deltaCnt[0])
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deltaAvg[0]/=deltaCnt[0];
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if (deltaCnt[1])
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deltaAvg[1]/=deltaCnt[1];
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if (deltaCnt[2])
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deltaAvg[2]/=deltaCnt[2];
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if (! g_debugmode) {
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printf(" delta ratio : (%d/%d %d/%d %d/%d)\n", (int)deltaCnt[0], nverts,
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(int)deltaCnt[1], nverts,
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(int)deltaCnt[2], nverts );
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printf(" average delta : (%.10f %.10f %.10f)\n", deltaAvg[0],
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deltaAvg[1],
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deltaAvg[2] );
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if (count==0)
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printf(" success !\n");
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}
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return count;
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}
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static int
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compareVerticesWithHbr(Shape const & shape,
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FarTopologyRefiner const & refiner,
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std::vector<xyzVV> const& farVertexData) {
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std::vector<xyzVV> hbrVertexData;
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Hmesh * hmesh = interpolateHbrVertexData<xyzVV>(&shape, refiner.GetMaxLevel());
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// copy Hbr vertex data into a re-ordered buffer (for easier comparison)
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GetReorderedHbrVertexData(refiner, *hmesh, &hbrVertexData);
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// compare and report differences in vertex positions
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return compareVertexData(farVertexData, hbrVertexData);
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}
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static bool
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isBaseMeshNonManifold(FarTopologyRefiner const & refiner) {
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// Some simpler inspection methods of the RefinerLevel would help here...
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// - vertices and edges are internally tagged as manifold or not
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FarTopologyLevel const & level = refiner.GetLevel(0);
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int nVerts = level.GetNumVertices();
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for (int i = 0; i < nVerts; ++i) {
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int nVertFaces = level.GetVertexFaces(i).size();
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int nVertEdges = level.GetVertexEdges(i).size();
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int nEdgesMinusFaces = nVertEdges - nVertFaces;
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if ((nEdgesMinusFaces > 1) || (nEdgesMinusFaces < 0)) {
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return true;
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}
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}
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int nEdges = level.GetNumEdges();
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for (int i = 0; i < nEdges; ++i) {
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int nEdgeFaces = level.GetEdgeFaces(i).size();
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if ((nEdgeFaces < 1) || (nEdgeFaces > 2)) {
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return true;
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}
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if (level.GetEdgeVertices(i)[0] == level.GetEdgeVertices(i)[1]) {
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return true;
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}
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}
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return false;
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}
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static bool
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shapeHasHierarchicalEditTags(Shape const & shape) {
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for (int i = 0; i < (int)shape.tags.size(); ++i) {
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Shape::tag const & tag = *shape.tags[i];
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if ((tag.name == "vertexedit") || (tag.name == "edgeedit") || (tag.name == "faceedit")) {
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return true;
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}
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}
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return false;
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}
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static bool
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areVerticesCompatibleWithHbr(Shape const & shape, FarTopologyRefiner const & refiner,
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std::string * incompatibleString = 0)
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{
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//
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// Known incompatibilities with Hbr:
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// - non-manifold features -- Hbr does not support them
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// - very high-valence vertex -- accumulation of Hbr inaccuracies becomes considerable
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// - Chaikin creasing -- Hbr known to be incorrect
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// - hierarchical edits -- not supported by FarTopologyRefiner
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// - Shape will include tags "vertexedit", "edgeedit" and "faceedit"
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//
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if (isBaseMeshNonManifold(refiner)) {
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if (incompatibleString) {
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*incompatibleString = std::string("mesh is non-manifold");
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}
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return false;
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}
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if (refiner.GetMaxValence() > 64) {
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if (incompatibleString) {
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*incompatibleString = std::string("vertices of excessively high valence present");
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}
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return false;
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}
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if (refiner.GetSchemeOptions().GetCreasingMethod() == SdcOptions::CREASE_CHAIKIN) {
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if (incompatibleString) {
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*incompatibleString = std::string("assigned crease method is Chaikin");
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}
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return false;
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}
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if (shape.isLeftHanded) {
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if (incompatibleString) {
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*incompatibleString = std::string("mesh is left-handed");
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}
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return false;
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}
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if (shapeHasHierarchicalEditTags(shape)) {
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if (incompatibleString) {
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*incompatibleString = std::string("hierarchical edits no longer supported");
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}
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return false;
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}
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return true;
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}
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//------------------------------------------------------------------------------
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static int
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checkMesh(Shape const & shape, std::string const& name, int maxlevel) {
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std::string warningDetail;
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static char const * schemes[] = { "Bilinear", "Catmark", "Loop" };
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printf("- %-25s ( %-8s ): \n", name.c_str(), schemes[shape.scheme]);
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// Refine and interpolate vertex data for every shape:
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std::vector<xyzVV> farVertexData;
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FarTopologyRefiner * refiner = InterpolateFarVertexData<xyzVV>(shape, maxlevel, farVertexData);
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// Perform relevant tests and accumulate failures:
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int failureCount = 0;
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if (areVerticesCompatibleWithHbr(shape, *refiner, &warningDetail)) {
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failureCount = compareVerticesWithHbr(shape, *refiner, farVertexData);
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} else {
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printf(" warning : vertex data not compared with Hbr (%s)\n", warningDetail.c_str());
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}
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return failureCount;
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}
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//------------------------------------------------------------------------------
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int main(int /* argc */, char ** /* argv */) {
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int levels=5, total=0;
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initShapes();
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if (g_debugmode)
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printf("[ ");
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else
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printf("precision : %f\n",PRECISION);
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for (int i=0; i<(int)g_shapes.size(); ++i) {
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ShapeDesc const & desc = g_shapes[i];
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Shape * shape = Shape::parseObj(desc);
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if (shape) {
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// May want to inspect and/or modify the shape before proceeding...
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total+=checkMesh(*shape, desc.name, levels);
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}
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delete shape;
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}
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if (g_debugmode)
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printf("]\n");
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else {
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if (total==0)
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printf("All tests passed.\n");
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else
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printf("Total failures : %d\n", total);
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}
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}
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//------------------------------------------------------------------------------
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