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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,220 @@ | ||
| /* | ||
| 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 <[email protected]> | ||
| */ | ||
| #pragma once | ||
| #ifndef XATLAS_C_H | ||
| #define XATLAS_C_H | ||
| #include <stdint.h> | ||
|
|
||
| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
|
||
| typedef enum | ||
| { | ||
| XATLAS_CHART_TYPE_PLANAR, | ||
| XATLAS_CHART_TYPE_ORTHO, | ||
| XATLAS_CHART_TYPE_LSCM, | ||
| XATLAS_CHART_TYPE_PIECEWISE, | ||
| XATLAS_CHART_TYPE_INVALID | ||
| } | ||
| xatlasChartType; | ||
|
|
||
| typedef struct | ||
| { | ||
| uint32_t *faceArray; | ||
| uint32_t atlasIndex; | ||
| uint32_t faceCount; | ||
| xatlasChartType type; | ||
| uint32_t material; | ||
| } | ||
| xatlasChart; | ||
|
|
||
| typedef struct | ||
| { | ||
| int32_t atlasIndex; | ||
| int32_t chartIndex; | ||
| float uv[2]; | ||
| uint32_t xref; | ||
| } | ||
| xatlasVertex; | ||
|
|
||
| typedef struct | ||
| { | ||
| xatlasChart *chartArray; | ||
| uint32_t *indexArray; | ||
| xatlasVertex *vertexArray; | ||
| uint32_t chartCount; | ||
| uint32_t indexCount; | ||
| uint32_t vertexCount; | ||
| } | ||
| xatlasMesh; | ||
|
|
||
| static const uint32_t xatlasImageChartIndexMask = 0x1FFFFFFF; | ||
| static const uint32_t xatlasImageHasChartIndexBit = 0x80000000; | ||
| static const uint32_t xatlasImageIsBilinearBit = 0x40000000; | ||
| static const uint32_t xatlasImageIsPaddingBit = 0x20000000; | ||
|
|
||
| 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; | ||
|
|
||
| typedef enum | ||
| { | ||
| XATLAS_INDEX_FORMAT_UINT16, | ||
| XATLAS_INDEX_FORMAT_UINT32 | ||
| } | ||
| xatlasIndexFormat; | ||
|
|
||
| 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; | ||
|
|
||
| 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; | ||
|
|
||
| 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; | ||
|
|
||
| typedef void (*xatlasParameterizeFunc)(const float *positions, float *texcoords, uint32_t vertexCount, const uint32_t *indices, uint32_t indexCount); | ||
|
|
||
| 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; | ||
|
|
||
| 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; | ||
|
|
||
| typedef enum | ||
| { | ||
| XATLAS_PROGRESS_CATEGORY_ADDMESH, | ||
| XATLAS_PROGRESS_CATEGORY_COMPUTECHARTS, | ||
| XATLAS_PROGRESS_CATEGORY_PACKCHARTS, | ||
| XATLAS_PROGRESS_CATEGORY_BUILDOUTPUTMESHES | ||
| } | ||
| xatlasProgressCategory; | ||
|
|
||
| typedef bool (*xatlasProgressFunc)(xatlasProgressCategory category, int progress, void *userData); | ||
| typedef void *(*xatlasReallocFunc)(void *, size_t); | ||
| typedef void (*xatlasFreeFunc)(void *); | ||
| typedef int (*xatlasPrintFunc)(const char *, ...); | ||
|
|
||
| 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); | ||
|
|
||
| #ifdef __cplusplus | ||
| } // extern "C" | ||
| #endif | ||
|
|
||
| #endif // XATLAS_C_H |