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REVIEWED: `LoadImageSvg()`

This commit is contained in:
Ray 2023-09-02 13:16:44 +02:00
parent c03ab03627
commit d6f3891009
2 changed files with 66 additions and 73 deletions
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3
src/raylib.h
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@ -1245,8 +1245,7 @@ RLAPI Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2);
// NOTE: These functions do not require GPU access
RLAPI Image LoadImage(const char *fileName); // Load image from file into CPU memory (RAM)
RLAPI Image LoadImageRaw(const char *fileName, int width, int height, int format, int headerSize); // Load image from RAW file data
RLAPI Image LoadImageSvg(const char *fileName, int width, int height); // Load image from SVG file data with specified size
RLAPI Image LoadImageSvgFromString(const char *string, int width, int height); // Load an image from a SVG string with custom size
RLAPI Image LoadImageSvg(const char *fileNameOrString, int width, int height); // Load image from SVG file data or string with specified size
RLAPI Image LoadImageAnim(const char *fileName, int *frames); // Load image sequence from file (frames appended to image.data)
RLAPI Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, int dataSize); // Load image from memory buffer, fileType refers to extension: i.e. '.png'
RLAPI Image LoadImageFromTexture(Texture2D texture); // Load image from GPU texture data

136
src/rtextures.c
View File

@ -318,67 +318,60 @@ Image LoadImageRaw(const char *fileName, int width, int height, int format, int
return image;
}
// Load an image from SVG file data with a custom size
Image LoadImageSvg(const char *fileName, int width, int height)
// Load an image from a SVG file or string with custom size
Image LoadImageSvg(const char *fileNameOrString, int width, int height)
{
Image image = { 0 };
unsigned int dataSize = 0;
unsigned char *string = LoadFileData(fileName, &dataSize);
if (string != NULL)
bool isSvgStringValid = false;
// TODO: Validate fileName or string
if (fileNameOrString != NULL)
{
image = LoadImageSvgFromString(string, width, height);
RL_FREE(string);
}
return image;
}
// Load an image from a SVG string with custom size
Image LoadImageSvgFromString(const char *string, int width, int height)
{
Image image = { 0 };
if (string != NULL)
{
struct NSVGimage *svgImage = nsvgParse(string, "px", 96.0f);
// Allocate memory for image
unsigned char *img = malloc(width*height*4);
// Calculate scales for both the width and the height
const float scaleWidth = width/svgImage->width;
const float scaleHeight = height/svgImage->height;
// Set the largest of the 2 scales to be the scale to use
const float scale = (scaleHeight > scaleWidth) ? scaleWidth : scaleHeight;
int offsetX = 0;
int offsetY = 0;
if (scaleHeight > scaleWidth)
if (FileExists(fileNameOrString))
{
offsetY = (height - svgImage->height*scale) / 2;
int dataSize = 0;
unsigned char *fileData = LoadFileData(fileNameOrString, &dataSize);
isSvgStringValid = true;
}
else
{
offsetX = (width - svgImage->width*scale) / 2;
// TODO: Validate it's a valid SVG string
isSvgStringValid = true;
}
// Rasterize
struct NSVGrasterizer* rast = nsvgCreateRasterizer();
nsvgRasterize(rast, svgImage, (int)offsetX, (int)offsetY, scale, img, width, height, width*4);
if (isSvgStringValid != NULL)
{
struct NSVGimage *svgImage = nsvgParse(fileNameOrString, "px", 96.0f);
unsigned char *img = RL_MALLOC(width*height*4);
// Populate image struct with all data
image.data = img;
image.width = width;
image.height = height;
image.mipmaps = 1;
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
// Calculate scales for both the width and the height
const float scaleWidth = width/svgImage->width;
const float scaleHeight = height/svgImage->height;
// Delete
nsvgDelete(svgImage);
// Set the largest of the 2 scales to be the scale to use
const float scale = (scaleHeight > scaleWidth)? scaleWidth : scaleHeight;
int offsetX = 0;
int offsetY = 0;
if (scaleHeight > scaleWidth) offsetY = (height - svgImage->height*scale) / 2;
else offsetX = (width - svgImage->width*scale) / 2;
// Rasterize
struct NSVGrasterizer *rast = nsvgCreateRasterizer();
nsvgRasterize(rast, svgImage, (int)offsetX, (int)offsetY, scale, img, width, height, width*4);
// Populate image struct with all data
image.data = img;
image.width = width;
image.height = height;
image.mipmaps = 1;
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
// Free used memory
nsvgDelete(svgImage);
}
}
return image;
@ -515,6 +508,28 @@ Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, i
image.mipmaps = 1;
}
#endif
#if defined(SUPPORT_FILEFORMAT_SVG)
else if ((strcmp(fileType, ".svg") == 0) || (strcmp(fileType, ".SVG") == 0))
{
// TODO: Validate fileData as valid SVG string data
struct NSVGimage *svgImage = nsvgParse(fileData, "px", 96.0f);
unsigned char *img = RL_MALLOC(svgImage->width*svgImage->height*4);
// Rasterize
struct NSVGrasterizer *rast = nsvgCreateRasterizer();
nsvgRasterize(rast, svgImage, 0, 0, 1.0f, img, svgImage->width, svgImage->height, svgImage->width*4);
// Populate image struct with all data
image.data = img;
image.width = svgImage->width;
image.height = svgImage->height;
image.mipmaps = 1;
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
nsvgDelete(svgImage);
}
#endif
#if defined(SUPPORT_FILEFORMAT_DDS)
else if ((strcmp(fileType, ".dds") == 0) || (strcmp(fileType, ".DDS") == 0))
{
@ -544,27 +559,6 @@ Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, i
{
image.data = rl_load_astc_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps);
}
#endif
#if defined(SUPPORT_FILEFORMAT_SVG)
else if (strcmp(fileType, ".svg") == 0)
{
if (fileData != NULL)
{
// Creating a duplicate svg to read sizes from due to nsvgParse modifiying the string buffer.
unsigned char *duplicate = (unsigned char*)RL_MALLOC(dataSize);
memcpy(duplicate, fileData, dataSize);
struct NSVGimage *svgImage = nsvgParse(duplicate, "px", 96.0f);
RL_FREE(duplicate);
const int width = (int)svgImage->width;
const int height = (int)svgImage->height;
// Delete
nsvgDelete(svgImage);
image = LoadImageSvgFromString(fileData, width, height);
}
}
#endif
else TRACELOG(LOG_WARNING, "IMAGE: Data format not supported");