mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-03 08:21:03 +00:00
148 lines
4.2 KiB
C++
148 lines
4.2 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2013 Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Sergey Sharybin.
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* Brecht van Lommel
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* Dirk Van Gelder
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#include "evaluator_capi.h"
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#include <iostream>
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#include "adaptiveEvaluator.h"
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#include "topology.h"
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#if !defined(WITH_ASSERT_ABORT)
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# define OSD_abort()
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#else
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# include <stdlib.h>
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# define OSD_abort() abort()
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#endif
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#if defined(_MSC_VER)
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# define __func__ __FUNCTION__
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#endif
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/* Define this when you want to have additional verbosity
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* about what's being passed to OpenSubdiv.
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*/
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#undef DEBUG_PRINT
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using namespace OpenSubdiv;
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/* **************** Types declaration **************** */
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typedef struct OpenSubdiv_EvaluatorDescr {
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PxOsdUtilSubdivTopology topology;
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PxOsdUtilAdaptiveEvaluator evaluator;
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std::vector<float> coarsePositions;
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} OpenSubdiv_EvaluatorDescr;
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/* **************** Mesh descriptor functions **************** */
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OpenSubdiv_EvaluatorDescr *openSubdiv_createEvaluatorDescr(int numVertices)
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{
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OpenSubdiv_EvaluatorDescr *evaluator_descr =
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new OpenSubdiv_EvaluatorDescr();
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evaluator_descr->topology.numVertices = numVertices;
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return evaluator_descr;
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}
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void openSubdiv_deleteEvaluatorDescr(
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OpenSubdiv_EvaluatorDescr *evaluator_descr)
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{
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delete(evaluator_descr);
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}
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void openSubdiv_createEvaluatorDescrFace(OpenSubdiv_EvaluatorDescr *evaluator_descr, int num_vertices, int *indices)
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{
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#ifdef DEBUG_PRINT
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printf("Adding face index:%d vertices:", (int)evaluator_descr->topology.nverts.size());
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for (int i = 0; i < num_vertices; i++) {
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printf("%d ", indices[i]);
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}
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printf("\n");
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#endif
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evaluator_descr->topology.nverts.push_back(num_vertices);
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for (int i = 0; i < num_vertices; i++) {
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evaluator_descr->topology.indices.push_back(indices[i]);
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}
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}
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void openSubdiv_finishEvaluatorDescr(OpenSubdiv_EvaluatorDescr *evaluator_descr,
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int refinementLevel)
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{
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std::string errorMessage;
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evaluator_descr->topology.refinementLevel = refinementLevel;
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if (not evaluator_descr->topology.IsValid(&errorMessage)) {
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std::cout <<"OpenSubdiv topology is not valid due to " << errorMessage << std::endl;
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} else {
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if (not evaluator_descr->evaluator.Initialize(
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evaluator_descr->topology, &errorMessage)) {
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std::cout <<"OpenSubdiv uniform evaluator initialization failed due to " << errorMessage << std::endl;
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}
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}
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}
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int openSubdiv_setEvaluatorCoarsePositions(
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struct OpenSubdiv_EvaluatorDescr *evaluator_descr,
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const float *positions, int numVertices)
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{
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std::string errorMessage;
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// TODO: returns void, need error check on length of positions?
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evaluator_descr->evaluator.SetCoarsePositions(
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&evaluator_descr->coarsePositions[0],
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(int)evaluator_descr->coarsePositions.size(),
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&errorMessage);
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// Refine with 1 thread for now
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if (not evaluator_descr->evaluator.Refine(1, &errorMessage)) {
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std::cout << "OpenSubdiv refinement failed due to " << errorMessage << std::endl;
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return 0;
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}
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return 1;
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}
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void openSubdiv_evaluateLimit(
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struct OpenSubdiv_EvaluatorDescr *evaluation_descr,
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int face_id, float u, float v,
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float P[3], float dPdu[3], float dPdv[3])
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{
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OsdEvalCoords coords;
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coords.u = u;
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coords.v = v;
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coords.face = face_id;
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evaluation_descr->evaluator.EvaluateLimit(coords, P, dPdu, dPdv);
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}
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