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Vox loaded (#1981)

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* new models_magicavoxel_loading example

* Portable header-only file "magicavoxel_loader.h" for MagicaVoxel loader example.

* models_magicavoxel_loading example added to CMakeLists.txt and Makefile

* fix models_magicavoxel_loading example for linux.

* * vox_loader into "src/external/vox_loader.h"
 * vox file support for "models.c"
 * updated example "models/models_magicavoxel_loading.c"

* * Fix Vox_FreeArrays (removed memory leak)

* * removed magicavoxel_loader.h

* * Revert vs2019 solution

* * vox_loader.h -> Support custom memory allocators
* vox_loader.h -> Reverse Y<>Z for left to right handed system
* models/models_magicavoxel_loading.c -> fix model center

* * vox_loader.h -> Removed Raylib dependencies

* * Changed Vox_LoadFileName to Vox_LoadFromMemory
This commit is contained in:
procfxgen 2021-09-10 15:24:01 +02:00 committed by GitHub
parent 803094f41f
commit a422d2fc8b
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3 changed files with 125 additions and 92 deletions
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12
examples/models/models_magicavoxel_loading.c
View File

@ -51,16 +51,14 @@ int main(void)
t1 = GetTime() * 1000.0;
TraceLog(LOG_INFO, TextFormat("Vox <%s> loaded in %f ms", GetFileName(szVoxFiles[i]), t1 - t0));
//Compute model matrix
//Compute model's center matrix
BoundingBox bb = GetModelBoundingBox(models[i]);
Vector3 center;
center.x = -(((bb.max.x - bb.min.x) / 2));
center.y = -(((bb.max.y - bb.min.y) / 2));
center.z = -(((bb.max.z - bb.min.z) / 2));
center.x = bb.min.x + (((bb.max.x - bb.min.x) / 2));
center.z = bb.min.z + (((bb.max.z - bb.min.z) / 2));
Matrix matP = MatrixTranslate(center.x, center.z, 0);
Matrix matR = MatrixRotateX(90 * DEG2RAD);
models[i].transform = MatrixMultiply(matP, matR);
Matrix matP = MatrixTranslate(-center.x, 0, -center.z);
models[i].transform = matP;
}

169
src/external/vox_loader.h vendored
View File

@ -22,7 +22,7 @@
THE SOFTWARE.
vox_loader - v1.00
vox_loader - v1.01
no warranty implied; use at your own risk
Do this:
@ -34,10 +34,13 @@
#include ...
#include ...
#define VOX_LOADER_INCLUDE__H
#include "magicavoxel_loader.h"
#include "vox_loader.h"
revision history:
1.00 (2021-09-03) first released version
1.01 (2021-09-07) Support custom memory allocators
Removed Raylib dependencies
Changed Vox_LoadFileName to Vox_LoadFromMemory
*/
@ -53,10 +56,21 @@ revision history:
extern "C" {
#endif
#define VOX_SUCCESS (0)
#define VOX_ERROR_FILE_NOT_FOUND (-1)
#define VOX_ERROR_INVALID_FORMAT (-2)
#define VOX_ERROR_FILE_VERSION_TOO_OLD (-3)
#define VOX_SUCCESS (0)
#define VOX_ERROR_FILE_NOT_FOUND (-1)
#define VOX_ERROR_INVALID_FORMAT (-2)
#define VOX_ERROR_FILE_VERSION_TOO_OLD (-3)
// VoxColor, 4 components, R8G8B8A8 (32bit)
typedef struct {
unsigned char r, g, b, a;
} VoxColor;
// VoxVector3, 3 components
typedef struct {
float x, y, z;
} VoxVector3;
typedef struct
{
@ -66,13 +80,13 @@ extern "C" {
typedef struct
{
Vector3* array;
VoxVector3* array;
int used, size;
} ArrayVector3;
typedef struct
{
Color* array;
VoxColor* array;
int used, size;
} ArrayColor;
@ -118,13 +132,13 @@ extern "C" {
ArrayColor colors;
//Palette for voxels
Color palette[256];
VoxColor palette[256];
} VoxArray3D;
// Functions
extern int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray);
extern int Vox_LoadFromMemory(const unsigned char* pvoxData, unsigned int voxDataSize, VoxArray3D* pvoxarray);
extern void Vox_FreeArrays(VoxArray3D* voxarray);
@ -155,7 +169,7 @@ extern "C" {
void initArrayInt(ArrayInt* a, int initialSize)
{
a->array = MemAlloc(initialSize * sizeof(int));
a->array = VOX_MALLOC(initialSize * sizeof(int));
a->used = 0;
a->size = initialSize;
}
@ -165,14 +179,14 @@ void insertArrayInt(ArrayInt* a, int element)
if (a->used == a->size)
{
a->size *= 2;
a->array = MemRealloc(a->array, a->size * sizeof(int));
a->array = VOX_REALLOC(a->array, a->size * sizeof(int));
}
a->array[a->used++] = element;
}
void freeArrayInt(ArrayInt* a)
{
MemFree(a->array);
VOX_FREE(a->array);
a->array = NULL;
a->used = a->size = 0;
}
@ -183,7 +197,7 @@ void freeArrayInt(ArrayInt* a)
void initArrayUShort(ArrayUShort* a, int initialSize)
{
a->array = MemAlloc(initialSize * sizeof(unsigned short));
a->array = VOX_MALLOC(initialSize * sizeof(unsigned short));
a->used = 0;
a->size = initialSize;
}
@ -193,14 +207,14 @@ void insertArrayUShort(ArrayUShort* a, unsigned short element)
if (a->used == a->size)
{
a->size *= 2;
a->array = MemRealloc(a->array, a->size * sizeof(unsigned short));
a->array = VOX_REALLOC(a->array, a->size * sizeof(unsigned short));
}
a->array[a->used++] = element;
}
void freeArrayUShort(ArrayUShort* a)
{
MemFree(a->array);
VOX_FREE(a->array);
a->array = NULL;
a->used = a->size = 0;
}
@ -212,24 +226,24 @@ void freeArrayUShort(ArrayUShort* a)
void initArrayVector3(ArrayVector3* a, int initialSize)
{
a->array = MemAlloc(initialSize * sizeof(Vector3));
a->array = VOX_MALLOC(initialSize * sizeof(VoxVector3));
a->used = 0;
a->size = initialSize;
}
void insertArrayVector3(ArrayVector3* a, Vector3 element)
void insertArrayVector3(ArrayVector3* a, VoxVector3 element)
{
if (a->used == a->size)
{
a->size *= 2;
a->array = MemRealloc(a->array, a->size * sizeof(Vector3));
a->array = VOX_REALLOC(a->array, a->size * sizeof(VoxVector3));
}
a->array[a->used++] = element;
}
void freeArrayVector3(ArrayVector3* a)
{
MemFree(a->array);
VOX_FREE(a->array);
a->array = NULL;
a->used = a->size = 0;
}
@ -240,24 +254,24 @@ void freeArrayVector3(ArrayVector3* a)
void initArrayColor(ArrayColor* a, int initialSize)
{
a->array = MemAlloc(initialSize * sizeof(Color));
a->array = VOX_MALLOC(initialSize * sizeof(VoxColor));
a->used = 0;
a->size = initialSize;
}
void insertArrayColor(ArrayColor* a, Color element)
void insertArrayColor(ArrayColor* a, VoxColor element)
{
if (a->used == a->size)
{
a->size *= 2;
a->array = MemRealloc(a->array, a->size * sizeof(Color));
a->array = VOX_REALLOC(a->array, a->size * sizeof(VoxColor));
}
a->array[a->used++] = element;
}
void freeArrayColor(ArrayColor* a)
{
MemFree(a->array);
VOX_FREE(a->array);
a->array = NULL;
a->used = a->size = 0;
}
@ -300,7 +314,7 @@ const int fv[6][4] = {
{4, 6, 7, 5 } };//+Z
const Vector3 SolidVertex[] = {
const VoxVector3 SolidVertex[] = {
{0, 0, 0}, //0
{1, 0, 0}, //1
{0, 1, 0}, //2
@ -315,7 +329,7 @@ const Vector3 SolidVertex[] = {
// Allocated VoxArray3D size
void Vox_AllocArray(VoxArray3D* voxarray, int _sx, int _sy, int _sz)
void Vox_AllocArray(VoxArray3D* pvoxarray, int _sx, int _sy, int _sz)
{
int sx = _sx + ((CHUNKSIZE - (_sx % CHUNKSIZE)) % CHUNKSIZE);
int sy = _sy + ((CHUNKSIZE - (_sy % CHUNKSIZE)) % CHUNKSIZE);
@ -325,50 +339,50 @@ void Vox_AllocArray(VoxArray3D* voxarray, int _sx, int _sy, int _sz)
int chy = sy >> CHUNKSIZE_OPSHIFT; //Chunks Count in Y
int chz = sz >> CHUNKSIZE_OPSHIFT; //Chunks Count in Z
//VoxArray3D* parray = (VoxArray3D*)MemAlloc(sizeof(VoxArray3D));
voxarray->sizeX = sx;
voxarray->sizeY = sy;
voxarray->sizeZ = sz;
//VoxArray3D* parray = (VoxArray3D*)VOX_MALLOC(sizeof(VoxArray3D));
pvoxarray->sizeX = sx;
pvoxarray->sizeY = sy;
pvoxarray->sizeZ = sz;
voxarray->chunksSizeX = chx;
voxarray->chunksSizeY = chy;
voxarray->chunksSizeZ = chz;
pvoxarray->chunksSizeX = chx;
pvoxarray->chunksSizeY = chy;
pvoxarray->chunksSizeZ = chz;
voxarray->ChunkFlattenOffset = (chy * chz); //m_arrayChunks[(x * (sy*sz)) + (z * sy) + y]
pvoxarray->ChunkFlattenOffset = (chy * chz); //m_arrayChunks[(x * (sy*sz)) + (z * sy) + y]
//Alloc chunks array
int size = sizeof(CubeChunk3D) * chx * chy * chz;
voxarray->m_arrayChunks = MemAlloc(size);
voxarray->arrayChunksSize = size;
pvoxarray->m_arrayChunks = VOX_MALLOC(size);
pvoxarray->arrayChunksSize = size;
//Init chunks array
size = chx * chy * chz;
voxarray->chunksTotal = size;
voxarray->chunksAllocated = 0;
pvoxarray->chunksTotal = size;
pvoxarray->chunksAllocated = 0;
for (int i = 0; i < size; i++)
{
voxarray->m_arrayChunks[i].m_array = 0;
voxarray->m_arrayChunks[i].arraySize = 0;
pvoxarray->m_arrayChunks[i].m_array = 0;
pvoxarray->m_arrayChunks[i].arraySize = 0;
}
}
// Set voxel ID from its position into VoxArray3D
void Vox_SetVoxel(VoxArray3D* voxarray, int x, int y, int z, unsigned char id)
void Vox_SetVoxel(VoxArray3D* pvoxarray, int x, int y, int z, unsigned char id)
{
//Get chunk from array pos
int chX = x >> CHUNKSIZE_OPSHIFT; //x / CHUNKSIZE;
int chY = y >> CHUNKSIZE_OPSHIFT; //y / CHUNKSIZE;
int chZ = z >> CHUNKSIZE_OPSHIFT; //z / CHUNKSIZE;
int offset = (chX * voxarray->ChunkFlattenOffset) + (chZ * voxarray->chunksSizeY) + chY;
int offset = (chX * pvoxarray->ChunkFlattenOffset) + (chZ * pvoxarray->chunksSizeY) + chY;
//if (offset > voxarray->arrayChunksSize)
//{
// TraceLog(LOG_ERROR, "Out of array");
//}
CubeChunk3D* chunk = &voxarray->m_arrayChunks[offset];
CubeChunk3D* chunk = &pvoxarray->m_arrayChunks[offset];
//Set Chunk
chX = x - (chX << CHUNKSIZE_OPSHIFT); //x - (bx * CHUNKSIZE);
@ -378,11 +392,11 @@ void Vox_SetVoxel(VoxArray3D* voxarray, int x, int y, int z, unsigned char id)
if (chunk->m_array == 0)
{
int size = CHUNKSIZE * CHUNKSIZE * CHUNKSIZE;
chunk->m_array = MemAlloc(size);
chunk->m_array = VOX_MALLOC(size);
chunk->arraySize = size;
//memset(chunk->m_array, 0, size);
memset(chunk->m_array, 0, size);
voxarray->chunksAllocated++;
pvoxarray->chunksAllocated++;
}
offset = (chX << CHUNK_FLATTENOFFSET_OPSHIFT) + (chZ << CHUNKSIZE_OPSHIFT) + chY;
@ -397,12 +411,12 @@ void Vox_SetVoxel(VoxArray3D* voxarray, int x, int y, int z, unsigned char id)
}
// Get voxel ID from its position into VoxArray3D
unsigned char Vox_GetVoxel(VoxArray3D* voxarray, int x, int y, int z)
unsigned char Vox_GetVoxel(VoxArray3D* pvoxarray, int x, int y, int z)
{
if (x < 0 || y < 0 || z < 0)
return 0;
if (x >= voxarray->sizeX || y >= voxarray->sizeY || z >= voxarray->sizeZ)
if (x >= pvoxarray->sizeX || y >= pvoxarray->sizeY || z >= pvoxarray->sizeZ)
return 0;
@ -410,14 +424,14 @@ unsigned char Vox_GetVoxel(VoxArray3D* voxarray, int x, int y, int z)
int chX = x >> CHUNKSIZE_OPSHIFT; //x / CHUNKSIZE;
int chY = y >> CHUNKSIZE_OPSHIFT; //y / CHUNKSIZE;
int chZ = z >> CHUNKSIZE_OPSHIFT; //z / CHUNKSIZE;
int offset = (chX * voxarray->ChunkFlattenOffset) + (chZ * voxarray->chunksSizeY) + chY;
int offset = (chX * pvoxarray->ChunkFlattenOffset) + (chZ * pvoxarray->chunksSizeY) + chY;
//if (offset > voxarray->arrayChunksSize)
//{
// TraceLog(LOG_ERROR, "Out of array");
//}
CubeChunk3D* chunk = &voxarray->m_arrayChunks[offset];
CubeChunk3D* chunk = &pvoxarray->m_arrayChunks[offset];
//Set Chunk
chX = x - (chX << CHUNKSIZE_OPSHIFT); //x - (bx * CHUNKSIZE);
@ -481,10 +495,10 @@ unsigned char Vox_CalcFacesVisible(VoxArray3D* pvoxArray, int cx, int cy, int cz
}
// Get a vertex position from a voxel's corner
Vector3 Vox_GetVertexPosition(int _wcx, int _wcy, int _wcz, int _nNumVertex)
VoxVector3 Vox_GetVertexPosition(int _wcx, int _wcy, int _wcz, int _nNumVertex)
{
float scale = 0.25;
Vector3 vtx = SolidVertex[_nNumVertex];
VoxVector3 vtx = SolidVertex[_nNumVertex];
vtx.x = (vtx.x + _wcx) * scale;
vtx.y = (vtx.y + _wcy) * scale;
vtx.z = (vtx.z + _wcz) * scale;
@ -501,7 +515,7 @@ void Vox_Build_Voxel(VoxArray3D* pvoxArray, int x, int y, int z, int matID)
return;
int i, j;
Vector3 vertComputed[8];
VoxVector3 vertComputed[8];
int bVertexComputed[8];
memset(vertComputed, 0, sizeof(vertComputed));
memset(bVertexComputed, 0, sizeof(bVertexComputed));
@ -542,7 +556,7 @@ void Vox_Build_Voxel(VoxArray3D* pvoxArray, int x, int y, int z, int matID)
insertArrayVector3(&pvoxArray->vertices, vertComputed[v2]);
insertArrayVector3(&pvoxArray->vertices, vertComputed[v3]);
Color col = pvoxArray->palette[matID];
VoxColor col = pvoxArray->palette[matID];
insertArrayColor(&pvoxArray->colors, col);
insertArrayColor(&pvoxArray->colors, col);
@ -566,7 +580,7 @@ void Vox_Build_Voxel(VoxArray3D* pvoxArray, int x, int y, int z, int matID)
}
// MagicaVoxel *.vox file format Loader
int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
int Vox_LoadFromMemory(const unsigned char* pvoxData, unsigned int voxDataSize, VoxArray3D* pvoxarray)
{
//////////////////////////////////////////////////
@ -576,24 +590,17 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
unsigned long signature;
unsigned int readed = 0;
unsigned char* fileData;
fileData = LoadFileData(pszfileName, &readed);
if (fileData == 0)
{
return VOX_ERROR_FILE_NOT_FOUND;
}
unsigned char* fileData = pvoxData;
unsigned char* fileDataPtr = fileData;
unsigned char* endfileDataPtr = fileData + readed;
unsigned char* endfileDataPtr = fileData + voxDataSize;
signature = *((unsigned long *)fileDataPtr);
fileDataPtr += sizeof(unsigned long);
if (signature != 0x20584F56) //56 4F 58 20
{
//TraceLog(LOG_ERROR, "Not an MagicaVoxel File format");
return VOX_ERROR_INVALID_FORMAT;
return VOX_ERROR_INVALID_FORMAT; //"Not an MagicaVoxel File format"
}
unsigned long version;
@ -603,8 +610,7 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
if (version < 150)
{
//TraceLog(LOG_ERROR, "MagicaVoxel version too old");
return VOX_ERROR_FILE_VERSION_TOO_OLD;
return VOX_ERROR_FILE_VERSION_TOO_OLD; //"MagicaVoxel version too old"
}
@ -651,7 +657,7 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
fileDataPtr += sizeof(unsigned long);
//Alloc vox array
Vox_AllocArray(voxarray, sizeX, sizeY, sizeZ);
Vox_AllocArray(pvoxarray, sizeX, sizeZ, sizeY); //Reverse Y<>Z for left to right handed system
}
else if (strcmp(szChunkName, "XYZI") == 0)
{
@ -669,14 +675,14 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
vz = *((unsigned char*)fileDataPtr++);
vi = *((unsigned char*)fileDataPtr++);
Vox_SetVoxel(voxarray, vx, vy, vz, vi);
Vox_SetVoxel(pvoxarray, vx, vz, pvoxarray->sizeZ-vy-1, vi); //Reverse Y<>Z for left to right handed system
numVoxels--;
}
}
else if (strcmp(szChunkName, "RGBA") == 0)
{
Color col;
VoxColor col;
//(each pixel: 1 byte x 4 : r, g, b, a ) x 256
for (int i = 0; i < 256 - 1; i++)
@ -686,7 +692,7 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
col.b = *((unsigned char*)fileDataPtr++);
col.a = *((unsigned char*)fileDataPtr++);
voxarray->palette[i + 1] = col;
pvoxarray->palette[i + 1] = col;
}
}
@ -696,6 +702,7 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
}
}
//TraceLog(LOG_INFO, TextFormat("Vox Size : %dx%dx%d", sizeX, sizeY, sizeZ));
//TraceLog(LOG_INFO, TextFormat("Vox Chunks Count : %d/%d", pvoxArray->chunksAllocated, pvoxArray->chunksTotal));
@ -708,22 +715,22 @@ int Vox_LoadFileName(const char* pszfileName, VoxArray3D* voxarray)
//TraceLog(LOG_INFO, TextFormat("Building VOX Mesh : %s", pszfileName));
// Init Arrays
initArrayVector3(&voxarray->vertices, 3 * 1024);
initArrayUShort(&voxarray->indices, 3 * 1024);
initArrayColor(&voxarray->colors, 3 * 1024);
initArrayVector3(&pvoxarray->vertices, 3 * 1024);
initArrayUShort(&pvoxarray->indices, 3 * 1024);
initArrayColor(&pvoxarray->colors, 3 * 1024);
// Create vertices and indices buffers
int x, y, z;
for (x = 0; x <= voxarray->sizeX; x++)
for (x = 0; x <= pvoxarray->sizeX; x++)
{
for (z = 0; z <= voxarray->sizeZ; z++)
for (z = 0; z <= pvoxarray->sizeZ; z++)
{
for (y = 0; y <= voxarray->sizeY; y++)
for (y = 0; y <= pvoxarray->sizeY; y++)
{
unsigned char matID = Vox_GetVoxel(voxarray, x, y, z);
unsigned char matID = Vox_GetVoxel(pvoxarray, x, y, z);
if (matID != 0)
Vox_Build_Voxel(voxarray, x, y, z, matID);
Vox_Build_Voxel(pvoxarray, x, y, z, matID);
}
}
}
@ -744,11 +751,11 @@ void Vox_FreeArrays(VoxArray3D* voxarray)
if (chunk->m_array != 0)
{
chunk->arraySize = 0;
MemFree(chunk->m_array);
VOX_FREE(chunk->m_array);
}
}
MemFree(voxarray->m_arrayChunks);
VOX_FREE(voxarray->m_arrayChunks);
voxarray->m_arrayChunks = 0;
voxarray->arrayChunksSize = 0;

36
src/models.c
View File

@ -74,7 +74,19 @@
#endif
#if defined(SUPPORT_FILEFORMAT_VOX)
// TODO: Support custom memory allocators
// Allow custom memory allocators
#ifndef VOX_MALLOC
#define VOX_MALLOC RL_MALLOC
#endif
#ifndef VOX_CALLOC
#define VOX_CALLOC RL_CALLOC
#endif
#ifndef VOX_REALLOC
#define VOX_REALLOC RL_REALLOC
#endif
#ifndef VOX_FREE
#define VOX_FREE RL_FREE
#endif
#define VOX_LOADER_IMPLEMENTATION
#include "external/vox_loader.h" // vox file format loading (MagikaVoxel)
@ -5529,24 +5541,38 @@ static void GetGLTFPrimitiveCount(cgltf_node *node, int *outCount)
#endif
#if defined(SUPPORT_FILEFORMAT_VOX)
// Load VOX (MagikaVoxel) mesh data
// Load VOX (MagicaVoxel) mesh data
static Model LoadVOX(const char *fileName)
{
Model model = { 0 };
int nbvertices = 0;
int meshescount = 0;
unsigned int readed = 0;
unsigned char* fileData;
//Read vox file into buffer
fileData = LoadFileData(fileName, &readed);
if (fileData == 0)
{
TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load VOX file", fileName);
return model;
}
//Read and build voxarray description
VoxArray3D voxarray = { 0 };
int ret = Vox_LoadFileName(fileName, &voxarray);
int ret = Vox_LoadFromMemory(fileData, readed, &voxarray);
if (ret != VOX_SUCCESS)
{
// Error
UnloadFileData(fileData);
TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load VOX data", fileName);
return model;
}
else
{
// Compute meshes count
// Success: Compute meshes count
nbvertices = voxarray.vertices.used;
meshescount = 1 + (nbvertices/65536);
@ -5611,7 +5637,9 @@ static Model LoadVOX(const char *fileName)
pcolors += verticesMax;
}
//Free buffers
Vox_FreeArrays(&voxarray);
UnloadFileData(fileData);
return model;
}