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/* | ||
MIT License | ||
Copyright (c) 2018-2020 Jonathan Young | ||
Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. | ||
*/ | ||
/* | ||
thekla_atlas | ||
MIT License | ||
https://github.com/Thekla/thekla_atlas | ||
Copyright (c) 2013 Thekla, Inc | ||
Copyright NVIDIA Corporation 2006 -- Ignacio Castano <icastano@nvidia.com> | ||
*/ | ||
#pragma once | ||
#ifndef XATLAS_C_H | ||
#define XATLAS_C_H | ||
#include <stdint.h> | ||
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#ifdef __cplusplus | ||
extern "C" { | ||
#endif | ||
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typedef enum | ||
{ | ||
XATLAS_CHART_TYPE_PLANAR, | ||
XATLAS_CHART_TYPE_ORTHO, | ||
XATLAS_CHART_TYPE_LSCM, | ||
XATLAS_CHART_TYPE_PIECEWISE, | ||
XATLAS_CHART_TYPE_INVALID | ||
} | ||
xatlasChartType; | ||
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typedef struct | ||
{ | ||
uint32_t *faceArray; | ||
uint32_t atlasIndex; | ||
uint32_t faceCount; | ||
xatlasChartType type; | ||
uint32_t material; | ||
} | ||
xatlasChart; | ||
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typedef struct | ||
{ | ||
int32_t atlasIndex; | ||
int32_t chartIndex; | ||
float uv[2]; | ||
uint32_t xref; | ||
} | ||
xatlasVertex; | ||
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typedef struct | ||
{ | ||
xatlasChart *chartArray; | ||
uint32_t *indexArray; | ||
xatlasVertex *vertexArray; | ||
uint32_t chartCount; | ||
uint32_t indexCount; | ||
uint32_t vertexCount; | ||
} | ||
xatlasMesh; | ||
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static const uint32_t xatlasImageChartIndexMask = 0x1FFFFFFF; | ||
static const uint32_t xatlasImageHasChartIndexBit = 0x80000000; | ||
static const uint32_t xatlasImageIsBilinearBit = 0x40000000; | ||
static const uint32_t xatlasImageIsPaddingBit = 0x20000000; | ||
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typedef struct | ||
{ | ||
uint32_t *image; | ||
xatlasMesh *meshes; | ||
uint32_t width; | ||
uint32_t height; | ||
uint32_t atlasCount; | ||
uint32_t chartCount; | ||
uint32_t meshCount; | ||
float *utilization; | ||
float texelsPerUnit; | ||
} | ||
xatlasAtlas; | ||
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typedef enum | ||
{ | ||
XATLAS_INDEX_FORMAT_UINT16, | ||
XATLAS_INDEX_FORMAT_UINT32 | ||
} | ||
xatlasIndexFormat; | ||
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typedef struct | ||
{ | ||
const void *vertexPositionData; | ||
const void *vertexNormalData; | ||
const void *vertexUvData; | ||
const void *indexData; | ||
const bool *faceIgnoreData; | ||
const uint32_t *faceMaterialData; | ||
const uint8_t *faceVertexCountnullptr; | ||
uint32_t vertexCount; | ||
uint32_t vertexPositionStride; | ||
uint32_t vertexNormalStride; | ||
uint32_t vertexUvStride; | ||
uint32_t indexCount; | ||
int32_t indexOffset; | ||
uint32_t faceCount; | ||
xatlasIndexFormat indexFormat; | ||
float epsilon; | ||
} | ||
xatlasMeshDecl; | ||
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typedef enum | ||
{ | ||
XATLAS_ADD_MESH_ERROR_SUCCESS, | ||
XATLAS_ADD_MESH_ERROR_ERROR, | ||
XATLAS_ADD_MESH_ERROR_INDEXOUTOFRANGE, | ||
XATLAS_ADD_MESH_ERROR_INVALIDFACEVERTEXCOUNT, | ||
XATLAS_ADD_MESH_ERROR_INVALIDINDEXCOUNT | ||
} | ||
xatlasAddMeshError; | ||
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typedef struct | ||
{ | ||
const void *vertexUvData; | ||
const void *indexData; | ||
const uint32_t *faceMaterialData; | ||
uint32_t vertexCount; | ||
uint32_t vertexStride; | ||
uint32_t indexCount; | ||
int32_t indexOffset; | ||
xatlasIndexFormat indexFormat; | ||
} | ||
xatlasUvMeshDecl; | ||
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typedef void (*xatlasParameterizeFunc)(const float *positions, float *texcoords, uint32_t vertexCount, const uint32_t *indices, uint32_t indexCount); | ||
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typedef struct | ||
{ | ||
bool useInputMeshUvs; | ||
float maxChartArea; | ||
float maxBoundaryLength; | ||
float normalDeviationWeight; | ||
float roundnessWeight; | ||
float straightnessWeight; | ||
float normalSeamWeight; | ||
float textureSeamWeight; | ||
float maxCost; | ||
uint32_t maxIterations; | ||
xatlasParameterizeFunc paramFunc; | ||
bool fixWinding; | ||
} | ||
xatlasChartOptions; | ||
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typedef struct | ||
{ | ||
bool bilinear; | ||
bool blockAlign; | ||
bool bruteForce; | ||
bool createImage; | ||
uint32_t maxChartSize; | ||
uint32_t padding; | ||
float texelsPerUnit; | ||
uint32_t resolution; | ||
bool rotateChartsToAxis; | ||
bool rotateCharts; | ||
} | ||
xatlasPackOptions; | ||
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typedef enum | ||
{ | ||
XATLAS_PROGRESS_CATEGORY_ADDMESH, | ||
XATLAS_PROGRESS_CATEGORY_COMPUTECHARTS, | ||
XATLAS_PROGRESS_CATEGORY_PACKCHARTS, | ||
XATLAS_PROGRESS_CATEGORY_BUILDOUTPUTMESHES | ||
} | ||
xatlasProgressCategory; | ||
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typedef bool (*xatlasProgressFunc)(xatlasProgressCategory category, int progress, void *userData); | ||
typedef void *(*xatlasReallocFunc)(void *, size_t); | ||
typedef void (*xatlasFreeFunc)(void *); | ||
typedef int (*xatlasPrintFunc)(const char *, ...); | ||
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xatlasAtlas *xatlasCreate(); | ||
void xatlasDestroy(xatlasAtlas *atlas); | ||
xatlasAddMeshError xatlasAddMesh(xatlasAtlas *atlas, const xatlasMeshDecl *meshDecl, uint32_t meshCountHint); | ||
void xatlasAddMeshJoin(xatlasAtlas *atlas); | ||
xatlasAddMeshError xatlasAddUvMesh(xatlasAtlas *atlas, const xatlasUvMeshDecl *decl); | ||
void xatlasComputeCharts(xatlasAtlas *atlas, const xatlasChartOptions *chartOptions); | ||
void xatlasPackCharts(xatlasAtlas *atlas, const xatlasPackOptions *packOptions); | ||
void xatlasGenerate(xatlasAtlas *atlas, const xatlasChartOptions *chartOptions, const xatlasPackOptions *packOptions); | ||
void xatlasSetProgressCallback(xatlasAtlas *atlas, xatlasProgressFunc progressFunc, void *progressUserData); | ||
void xatlasSetAlloc(xatlasReallocFunc reallocFunc, xatlasFreeFunc freeFunc); | ||
void xatlasSetPrint(xatlasPrintFunc print, bool verbose); | ||
const char *xatlasAddMeshErrorString(xatlasAddMeshError error); | ||
const char *xatlasProgressCategoryString(xatlasProgressCategory category); | ||
void xatlasMeshDeclInit(xatlasMeshDecl *meshDecl); | ||
void xatlasUvMeshDeclInit(xatlasUvMeshDecl *uvMeshDecl); | ||
void xatlasChartOptionsInit(xatlasChartOptions *chartOptions); | ||
void xatlasPackOptionsInit(xatlasPackOptions *packOptions); | ||
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#ifdef __cplusplus | ||
} // extern "C" | ||
#endif | ||
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#endif // XATLAS_C_H |