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Update C sources, add new functions and rename package to

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This commit is contained in:
Milan Nikolic 2018-10-08 18:56:34 +02:00
parent 391c25482d
commit 08aa518a46
156 changed files with 34542 additions and 19573 deletions
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454
raylib/text.c
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@ -36,9 +36,8 @@
*
**********************************************************************************************/
#include "config.h"
#include "raylib.h"
#include "config.h" // Defines module configuration flags
#include "raylib.h" // Declares module functions
#include <stdlib.h> // Required for: malloc(), free()
#include <string.h> // Required for: strlen()
@ -48,15 +47,13 @@
#include "utils.h" // Required for: fopen() Android mapping
#if defined(SUPPORT_FILEFORMAT_TTF)
// Following libs are used on LoadTTF()
#define STBTT_STATIC // Define stb_truetype functions static to this module
#define STB_TRUETYPE_IMPLEMENTATION
#include "external/stb_truetype.h" // Required for: stbtt_BakeFontBitmap()
#endif
#define STB_RECT_PACK_IMPLEMENTATION
#include "external/stb_rect_pack.h" // Required for: ttf font rectangles packaging
// Rectangle packing functions (not used at the moment)
//#define STB_RECT_PACK_IMPLEMENTATION
//#include "stb_rect_pack.h"
#define STBTT_STATIC
#define STB_TRUETYPE_IMPLEMENTATION
#include "external/stb_truetype.h" // Required for: ttf font data reading
#endif
//----------------------------------------------------------------------------------
// Defines and Macros
@ -89,9 +86,6 @@ static Font LoadImageFont(Image image, Color key, int firstChar); // Load a Imag
#if defined(SUPPORT_FILEFORMAT_FNT)
static Font LoadBMFont(const char *fileName); // Load a BMFont file (AngelCode font file)
#endif
#if defined(SUPPORT_FILEFORMAT_TTF)
static Font LoadTTF(const char *fileName, int fontSize, int charsCount, int *fontChars); // Load spritefont from TTF data
#endif
#if defined(SUPPORT_DEFAULT_FONT)
extern void LoadDefaultFont(void);
@ -223,12 +217,12 @@ extern void LoadDefaultFont(void)
{
defaultFont.chars[i].value = 32 + i; // First char is 32
defaultFont.chars[i].rec.x = currentPosX;
defaultFont.chars[i].rec.y = charsDivisor + currentLine*(charsHeight + charsDivisor);
defaultFont.chars[i].rec.width = charsWidth[i];
defaultFont.chars[i].rec.height = charsHeight;
defaultFont.chars[i].rec.x = (float)currentPosX;
defaultFont.chars[i].rec.y = (float)(charsDivisor + currentLine*(charsHeight + charsDivisor));
defaultFont.chars[i].rec.width = (float)charsWidth[i];
defaultFont.chars[i].rec.height = (float)charsHeight;
testPosX += (defaultFont.chars[i].rec.width + charsDivisor);
testPosX += (int)(defaultFont.chars[i].rec.width + (float)charsDivisor);
if (testPosX >= defaultFont.texture.width)
{
@ -236,8 +230,8 @@ extern void LoadDefaultFont(void)
currentPosX = 2*charsDivisor + charsWidth[i];
testPosX = currentPosX;
defaultFont.chars[i].rec.x = charsDivisor;
defaultFont.chars[i].rec.y = charsDivisor + currentLine*(charsHeight + charsDivisor);
defaultFont.chars[i].rec.x = (float)charsDivisor;
defaultFont.chars[i].rec.y = (float)(charsDivisor + currentLine*(charsHeight + charsDivisor));
}
else currentPosX = testPosX;
@ -247,7 +241,7 @@ extern void LoadDefaultFont(void)
defaultFont.chars[i].advanceX = 0;
}
defaultFont.baseSize = defaultFont.chars[0].rec.height;
defaultFont.baseSize = (int)defaultFont.chars[0].rec.height;
TraceLog(LOG_INFO, "[TEX ID %i] Default font loaded successfully", defaultFont.texture.id);
}
@ -261,7 +255,7 @@ extern void UnloadDefaultFont(void)
#endif // SUPPORT_DEFAULT_FONT
// Get the default font, useful to be used with extended parameters
Font GetDefaultFont()
Font GetFontDefault()
{
#if defined(SUPPORT_DEFAULT_FONT)
return defaultFont;
@ -277,32 +271,40 @@ Font LoadFont(const char *fileName)
// Default hardcoded values for ttf file loading
#define DEFAULT_TTF_FONTSIZE 32 // Font first character (32 - space)
#define DEFAULT_TTF_NUMCHARS 95 // ASCII 32..126 is 95 glyphs
#define DEFAULT_FIRST_CHAR 32 // Expected first char for image spritefont
#define DEFAULT_FIRST_CHAR 32 // Expected first char for image sprite font
Font spriteFont = { 0 };
Font font = { 0 };
#if defined(SUPPORT_FILEFORMAT_TTF)
if (IsFileExtension(fileName, ".ttf")) spriteFont = LoadFontEx(fileName, DEFAULT_TTF_FONTSIZE, 0, NULL);
if (IsFileExtension(fileName, ".ttf"))
{
font.baseSize = DEFAULT_TTF_FONTSIZE;
font.charsCount = DEFAULT_TTF_NUMCHARS;
font.chars = LoadFontData(fileName, font.baseSize, NULL, font.charsCount, FONT_DEFAULT);
Image atlas = GenImageFontAtlas(font.chars, font.charsCount, font.baseSize, 4, 0);
font.texture = LoadTextureFromImage(atlas);
UnloadImage(atlas);
}
else
#endif
#if defined(SUPPORT_FILEFORMAT_FNT)
if (IsFileExtension(fileName, ".fnt")) spriteFont = LoadBMFont(fileName);
if (IsFileExtension(fileName, ".fnt")) font = LoadBMFont(fileName);
else
#endif
{
Image image = LoadImage(fileName);
if (image.data != NULL) spriteFont = LoadImageFont(image, MAGENTA, DEFAULT_FIRST_CHAR);
if (image.data != NULL) font = LoadImageFont(image, MAGENTA, DEFAULT_FIRST_CHAR);
UnloadImage(image);
}
if (spriteFont.texture.id == 0)
if (font.texture.id == 0)
{
TraceLog(LOG_WARNING, "[%s] Font could not be loaded, using default font", fileName);
spriteFont = GetDefaultFont();
font = GetFontDefault();
}
else SetTextureFilter(spriteFont.texture, FILTER_POINT); // By default we set point filter (best performance)
else SetTextureFilter(font.texture, FILTER_POINT); // By default we set point filter (best performance)
return spriteFont;
return font;
}
// Load Font from TTF font file with generation parameters
@ -310,38 +312,249 @@ Font LoadFont(const char *fileName)
// if array is NULL, default char set is selected 32..126
Font LoadFontEx(const char *fileName, int fontSize, int charsCount, int *fontChars)
{
Font spriteFont = { 0 };
int totalChars = 95; // Default charset [32..126]
Font font = { 0 };
font.baseSize = fontSize;
font.charsCount = (charsCount > 0) ? charsCount : 95;
font.chars = LoadFontData(fileName, font.baseSize, fontChars, font.charsCount, FONT_DEFAULT);
Image atlas = GenImageFontAtlas(font.chars, font.charsCount, font.baseSize, 2, 0);
font.texture = LoadTextureFromImage(atlas);
UnloadImage(atlas);
return font;
}
#if defined(SUPPORT_FILEFORMAT_TTF)
if (IsFileExtension(fileName, ".ttf"))
// Load font data for further use
// NOTE: Requires TTF font and can generate SDF data
CharInfo *LoadFontData(const char *fileName, int fontSize, int *fontChars, int charsCount, int type)
{
// NOTE: Using some SDF generation default values,
// trades off precision with ability to handle *smaller* sizes
#define SDF_CHAR_PADDING 4
#define SDF_ON_EDGE_VALUE 128
#define SDF_PIXEL_DIST_SCALE 64.0f
#define BITMAP_ALPHA_THRESHOLD 80
// In case no chars count provided, default to 95
charsCount = (charsCount > 0) ? charsCount : 95;
CharInfo *chars = (CharInfo *)malloc(charsCount*sizeof(CharInfo));
// Load font data (including pixel data) from TTF file
// NOTE: Loaded information should be enough to generate font image atlas,
// using any packaging method
FILE *fontFile = fopen(fileName, "rb"); // Load font file
fseek(fontFile, 0, SEEK_END);
long size = ftell(fontFile); // Get file size
fseek(fontFile, 0, SEEK_SET); // Reset file pointer
unsigned char *fontBuffer = (unsigned char *)malloc(size);
fread(fontBuffer, size, 1, fontFile);
fclose(fontFile);
// Init font for data reading
stbtt_fontinfo fontInfo;
if (!stbtt_InitFont(&fontInfo, fontBuffer, 0)) TraceLog(LOG_WARNING, "Failed to init font!");
// Calculate font scale factor
float scaleFactor = stbtt_ScaleForPixelHeight(&fontInfo, (float)fontSize);
// Calculate font basic metrics
// NOTE: ascent is equivalent to font baseline
int ascent, descent, lineGap;
stbtt_GetFontVMetrics(&fontInfo, &ascent, &descent, &lineGap);
// Fill fontChars in case not provided externally
// NOTE: By default we fill charsCount consecutevely, starting at 32 (Space)
int genFontChars = false;
if (fontChars == NULL) genFontChars = true;
if (genFontChars)
{
if (charsCount != 0) totalChars = charsCount;
fontChars = (int *)malloc(charsCount*sizeof(int));
for (int i = 0; i < charsCount; i++) fontChars[i] = i + 32;
}
// NOTE: Using simple packaging, one char after another
for (int i = 0; i < charsCount; i++)
{
int chw = 0, chh = 0; // Character width and height (on generation)
int ch = fontChars[i]; // Character value to get info for
chars[i].value = ch;
if (fontChars == NULL)
// Render a unicode codepoint to a bitmap
// stbtt_GetCodepointBitmap() -- allocates and returns a bitmap
// stbtt_GetCodepointBitmapBox() -- how big the bitmap must be
// stbtt_MakeCodepointBitmap() -- renders into bitmap you provide
if (type != FONT_SDF) chars[i].data = stbtt_GetCodepointBitmap(&fontInfo, scaleFactor, scaleFactor, ch, &chw, &chh, &chars[i].offsetX, &chars[i].offsetY);
else if (ch != 32) chars[i].data = stbtt_GetCodepointSDF(&fontInfo, scaleFactor, ch, SDF_CHAR_PADDING, SDF_ON_EDGE_VALUE, SDF_PIXEL_DIST_SCALE, &chw, &chh, &chars[i].offsetX, &chars[i].offsetY);
if (type == FONT_BITMAP)
{
fontChars = (int *)malloc(totalChars*sizeof(int));
for (int i = 0; i < totalChars; i++) fontChars[i] = i + 32; // Default first character: SPACE[32]
// Aliased bitmap (black & white) font generation, avoiding anti-aliasing
// NOTE: For optimum results, bitmap font should be generated at base pixel size
for (int p = 0; p < chw*chh; p++)
{
if (chars[i].data[p] < BITMAP_ALPHA_THRESHOLD) chars[i].data[p] = 0;
else chars[i].data[p] = 255;
}
}
spriteFont = LoadTTF(fileName, fontSize, totalChars, fontChars);
}
#endif
chars[i].rec.width = (float)chw;
chars[i].rec.height = (float)chh;
chars[i].offsetY += (int)((float)ascent*scaleFactor);
// Get bounding box for character (may be offset to account for chars that dip above or below the line)
int chX1, chY1, chX2, chY2;
stbtt_GetCodepointBitmapBox(&fontInfo, ch, scaleFactor, scaleFactor, &chX1, &chY1, &chX2, &chY2);
TraceLog(LOG_DEBUG, "Character box measures: %i, %i, %i, %i", chX1, chY1, chX2 - chX1, chY2 - chY1);
TraceLog(LOG_DEBUG, "Character offsetY: %i", (int)((float)ascent*scaleFactor) + chY1);
if (spriteFont.texture.id == 0)
stbtt_GetCodepointHMetrics(&fontInfo, ch, &chars[i].advanceX, NULL);
chars[i].advanceX *= scaleFactor;
}
free(fontBuffer);
if (genFontChars) free(fontChars);
return chars;
}
// Generate image font atlas using chars info
// NOTE: Packing method: 0-Default, 1-Skyline
Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int padding, int packMethod)
{
Image atlas = { 0 };
// In case no chars count provided we suppose default of 95
charsCount = (charsCount > 0) ? charsCount : 95;
// Calculate image size based on required pixel area
// NOTE 1: Image is forced to be squared and POT... very conservative!
// NOTE 2: SDF font characters already contain an internal padding,
// so image size would result bigger than default font type
float requiredArea = 0;
for (int i = 0; i < charsCount; i++) requiredArea += ((chars[i].rec.width + 2*padding)*(chars[i].rec.height + 2*padding));
float guessSize = sqrtf(requiredArea)*1.25f;
int imageSize = (int)powf(2, ceilf(logf((float)guessSize)/logf(2))); // Calculate next POT
atlas.width = imageSize; // Atlas bitmap width
atlas.height = imageSize; // Atlas bitmap height
atlas.data = (unsigned char *)calloc(1, atlas.width*atlas.height); // Create a bitmap to store characters (8 bpp)
atlas.format = UNCOMPRESSED_GRAYSCALE;
atlas.mipmaps = 1;
// DEBUG: We can see padding in the generated image setting a gray background...
//for (int i = 0; i < atlas.width*atlas.height; i++) ((unsigned char *)atlas.data)[i] = 100;
if (packMethod == 0) // Use basic packing algorythm
{
TraceLog(LOG_WARNING, "[%s] Font could not be generated, using default font", fileName);
spriteFont = GetDefaultFont();
int offsetX = padding;
int offsetY = padding;
// NOTE: Using simple packaging, one char after another
for (int i = 0; i < charsCount; i++)
{
// Copy pixel data from fc.data to atlas
for (int y = 0; y < (int)chars[i].rec.height; y++)
{
for (int x = 0; x < (int)chars[i].rec.width; x++)
{
((unsigned char *)atlas.data)[(offsetY + y)*atlas.width + (offsetX + x)] = chars[i].data[y*(int)chars[i].rec.width + x];
}
}
chars[i].rec.x = (float)offsetX;
chars[i].rec.y = (float)offsetY;
// Move atlas position X for next character drawing
offsetX += ((int)chars[i].rec.width + 2*padding);
if (offsetX >= (atlas.width - (int)chars[i].rec.width - padding))
{
offsetX = padding;
// NOTE: Be careful on offsetY for SDF fonts, by default SDF
// use an internal padding of 4 pixels, it means char rectangle
// height is bigger than fontSize, it could be up to (fontSize + 8)
offsetY += (fontSize + 2*padding);
if (offsetY > (atlas.height - fontSize - padding)) break;
}
}
}
else if (packMethod == 1) // Use Skyline rect packing algorythm (stb_pack_rect)
{
TraceLog(LOG_DEBUG, "Using Skyline packing algorythm!");
stbrp_context *context = (stbrp_context *)malloc(sizeof(*context));
stbrp_node *nodes = (stbrp_node *)malloc(charsCount*sizeof(*nodes));
stbrp_init_target(context, atlas.width, atlas.height, nodes, charsCount);
stbrp_rect *rects = (stbrp_rect *)malloc(charsCount*sizeof(stbrp_rect));
// Fill rectangles for packaging
for (int i = 0; i < charsCount; i++)
{
rects[i].id = i;
rects[i].w = (int)chars[i].rec.width + 2*padding;
rects[i].h = (int)chars[i].rec.height + 2*padding;
}
// Package rectangles into atlas
stbrp_pack_rects(context, rects, charsCount);
for (int i = 0; i < charsCount; i++)
{
chars[i].rec.x = rects[i].x + (float)padding;
chars[i].rec.y = rects[i].y + (float)padding;
if (rects[i].was_packed)
{
// Copy pixel data from fc.data to atlas
for (int y = 0; y < (int)chars[i].rec.height; y++)
{
for (int x = 0; x < (int)chars[i].rec.width; x++)
{
((unsigned char *)atlas.data)[(rects[i].y + padding + y)*atlas.width + (rects[i].x + padding + x)] = chars[i].data[y*(int)chars[i].rec.width + x];
}
}
}
else TraceLog(LOG_WARNING, "Character could not be packed: %i", i);
}
free(nodes);
free(context);
}
// TODO: Crop image if required for smaller size
// Convert image data from GRAYSCALE to GRAY_ALPHA
// WARNING: ImageAlphaMask(&atlas, atlas) does not work in this case, requires manual operation
unsigned char *dataGrayAlpha = (unsigned char *)malloc(imageSize*imageSize*sizeof(unsigned char)*2); // Two channels
for (int i = 0, k = 0; i < atlas.width*atlas.height; i++, k += 2)
{
dataGrayAlpha[k] = 255;
dataGrayAlpha[k + 1] = ((unsigned char *)atlas.data)[i];
}
return spriteFont;
free(atlas.data);
atlas.data = dataGrayAlpha;
atlas.format = UNCOMPRESSED_GRAY_ALPHA;
return atlas;
}
// Unload Font from GPU memory (VRAM)
void UnloadFont(Font font)
{
// NOTE: Make sure spriteFont is not default font (fallback)
if (font.texture.id != GetDefaultFont().texture.id)
if (font.texture.id != GetFontDefault().texture.id)
{
UnloadTexture(font.texture);
free(font.chars);
@ -356,7 +569,7 @@ void UnloadFont(Font font)
void DrawText(const char *text, int posX, int posY, int fontSize, Color color)
{
// Check if default font has been loaded
if (GetDefaultFont().texture.id != 0)
if (GetFontDefault().texture.id != 0)
{
Vector2 position = { (float)posX, (float)posY };
@ -364,7 +577,7 @@ void DrawText(const char *text, int posX, int posY, int fontSize, Color color)
if (fontSize < defaultFontSize) fontSize = defaultFontSize;
int spacing = fontSize/defaultFontSize;
DrawTextEx(GetDefaultFont(), text, position, (float)fontSize, (float)spacing, color);
DrawTextEx(GetFontDefault(), text, position, (float)fontSize, (float)spacing, color);
}
}
@ -455,11 +668,11 @@ const char *SubText(const char *text, int position, int length)
for (int c = 0 ; c < length ; c++)
{
*(buffer+c) = *(text+position);
*(buffer + c) = *(text + position);
text++;
}
*(buffer+length) = '\0';
*(buffer + length) = '\0';
return buffer;
}
@ -470,13 +683,13 @@ int MeasureText(const char *text, int fontSize)
Vector2 vec = { 0.0f, 0.0f };
// Check if default font has been loaded
if (GetDefaultFont().texture.id != 0)
if (GetFontDefault().texture.id != 0)
{
int defaultFontSize = 10; // Default Font chars height in pixel
if (fontSize < defaultFontSize) fontSize = defaultFontSize;
int spacing = fontSize/defaultFontSize;
vec = MeasureTextEx(GetDefaultFont(), text, (float)fontSize, (float)spacing);
vec = MeasureTextEx(GetFontDefault(), text, (float)fontSize, (float)spacing);
}
return (int)vec.x;
@ -629,15 +842,15 @@ static Font LoadImageFont(Image image, Color key, int firstChar)
{
tempCharValues[index] = firstChar + index;
tempCharRecs[index].x = xPosToRead;
tempCharRecs[index].y = lineSpacing + lineToRead*(charHeight + lineSpacing);
tempCharRecs[index].height = charHeight;
tempCharRecs[index].x = (float)xPosToRead;
tempCharRecs[index].y = (float)(lineSpacing + lineToRead*(charHeight + lineSpacing));
tempCharRecs[index].height = (float)charHeight;
int charWidth = 0;
while (!COLOR_EQUAL(pixels[(lineSpacing + (charHeight+lineSpacing)*lineToRead)*image.width + xPosToRead + charWidth], key)) charWidth++;
tempCharRecs[index].width = charWidth;
tempCharRecs[index].width = (float)charWidth;
index++;
@ -682,7 +895,7 @@ static Font LoadImageFont(Image image, Color key, int firstChar)
spriteFont.chars[i].advanceX = 0;
}
spriteFont.baseSize = spriteFont.chars[0].rec.height;
spriteFont.baseSize = (int)spriteFont.chars[0].rec.height;
TraceLog(LOG_INFO, "Image file loaded correctly as Font");
@ -764,22 +977,23 @@ static Font LoadBMFont(const char *fileName)
{
Image imCopy = ImageCopy(imFont);
for (int i = 0; i < imCopy.width*imCopy.height; i++) ((unsigned char *)imCopy.data)[i] = 0xff; // WHITE pixel
for (int i = 0; i < imCopy.width*imCopy.height; i++) ((unsigned char *)imCopy.data)[i] = 0xff;
ImageAlphaMask(&imCopy, imFont);
font.texture = LoadTextureFromImage(imCopy);
UnloadImage(imCopy);
}
else font.texture = LoadTextureFromImage(imFont);
UnloadImage(imFont);
free(texPath);
// Fill font characters info data
font.baseSize = fontSize;
font.charsCount = charsCount;
font.chars = (CharInfo *)malloc(charsCount*sizeof(CharInfo));
UnloadImage(imFont);
free(texPath);
int charId, charX, charY, charWidth, charHeight, charOffsetX, charOffsetY, charAdvanceX;
for (int i = 0; i < charsCount; i++)
@ -790,7 +1004,7 @@ static Font LoadBMFont(const char *fileName)
// Save data properly in sprite font
font.chars[i].value = charId;
font.chars[i].rec = (Rectangle){ charX, charY, charWidth, charHeight };
font.chars[i].rec = (Rectangle){ (float)charX, (float)charY, (float)charWidth, (float)charHeight };
font.chars[i].offsetX = charOffsetX;
font.chars[i].offsetY = charOffsetY;
font.chars[i].advanceX = charAdvanceX;
@ -801,116 +1015,10 @@ static Font LoadBMFont(const char *fileName)
if (font.texture.id == 0)
{
UnloadFont(font);
font = GetDefaultFont();
font = GetFontDefault();
}
else TraceLog(LOG_INFO, "[%s] Font loaded successfully", fileName);
return font;
}
#endif
#if defined(SUPPORT_FILEFORMAT_TTF)
// Generate a sprite font from TTF file data (font size required)
// TODO: Review texture packing method and generation (use oversampling)
static Font LoadTTF(const char *fileName, int fontSize, int charsCount, int *fontChars)
{
#define MAX_TTF_SIZE 16 // Maximum ttf file size in MB
// NOTE: Font texture size is predicted (being as much conservative as possible)
// Predictive method consist of supposing same number of chars by line-column (sqrtf)
// and a maximum character width of 3/4 of fontSize... it worked ok with all my tests...
// Calculate next power-of-two value
float guessSize = ceilf((float)fontSize*3/4)*ceilf(sqrtf((float)charsCount));
int textureSize = (int)powf(2, ceilf(logf((float)guessSize)/logf(2))); // Calculate next POT
TraceLog(LOG_INFO, "TTF spritefont loading: Predicted texture size: %ix%i", textureSize, textureSize);
unsigned char *ttfBuffer = (unsigned char *)malloc(MAX_TTF_SIZE*1024*1024);
unsigned char *dataBitmap = (unsigned char *)malloc(textureSize*textureSize*sizeof(unsigned char)); // One channel bitmap returned!
stbtt_bakedchar *charData = (stbtt_bakedchar *)malloc(sizeof(stbtt_bakedchar)*charsCount);
Font font = { 0 };
FILE *ttfFile = fopen(fileName, "rb");
if (ttfFile == NULL)
{
TraceLog(LOG_WARNING, "[%s] TTF file could not be opened", fileName);
return font;
}
// NOTE: We try reading up to 16 MB of elements of 1 byte
fread(ttfBuffer, 1, MAX_TTF_SIZE*1024*1024, ttfFile);
// Find font baseline (vertical origin of the font)
// NOTE: This value is required because y-offset depends on it!
stbtt_fontinfo fontInfo;
int ascent, baseline;
float scale;
stbtt_InitFont(&fontInfo, ttfBuffer, 0);
scale = stbtt_ScaleForPixelHeight(&fontInfo, fontSize);
stbtt_GetFontVMetrics(&fontInfo, &ascent, 0, 0);
baseline = (int)(ascent*scale);
if (fontChars[0] != 32) TraceLog(LOG_WARNING, "TTF spritefont loading: first character is not SPACE(32) character");
// NOTE: Using stb_truetype crappy packing method, no guarantee the font fits the image...
// TODO: Replace this function by a proper packing method and support random chars order,
// we already receive a list (fontChars) with the ordered expected characters
int result = stbtt_BakeFontBitmap(ttfBuffer, 0, fontSize, dataBitmap, textureSize, textureSize, fontChars[0], charsCount, charData);
//if (result > 0) TraceLog(LOG_INFO, "TTF spritefont loading: first unused row of generated bitmap: %i", result);
if (result < 0) TraceLog(LOG_WARNING, "TTF spritefont loading: Not all the characters fit in the font");
free(ttfBuffer);
// Convert image data from grayscale to to UNCOMPRESSED_GRAY_ALPHA
unsigned char *dataGrayAlpha = (unsigned char *)malloc(textureSize*textureSize*sizeof(unsigned char)*2); // Two channels
for (int i = 0, k = 0; i < textureSize*textureSize; i++, k += 2)
{
dataGrayAlpha[k] = 255;
dataGrayAlpha[k + 1] = dataBitmap[i];
}
free(dataBitmap);
// Sprite font generation from TTF extracted data
Image image;
image.width = textureSize;
image.height = textureSize;
image.mipmaps = 1;
image.format = UNCOMPRESSED_GRAY_ALPHA;
image.data = dataGrayAlpha;
font.texture = LoadTextureFromImage(image);
//SavePNG("generated_ttf_image.png", (unsigned char *)image.data, image.width, image.height, 2);
UnloadImage(image); // Unloads dataGrayAlpha
font.baseSize = fontSize;
font.charsCount = charsCount;
font.chars = (CharInfo *)malloc(font.charsCount*sizeof(CharInfo));
for (int i = 0; i < font.charsCount; i++)
{
font.chars[i].value = fontChars[i];
font.chars[i].rec.x = (int)charData[i].x0;
font.chars[i].rec.y = (int)charData[i].y0;
font.chars[i].rec.width = (int)charData[i].x1 - (int)charData[i].x0;
font.chars[i].rec.height = (int)charData[i].y1 - (int)charData[i].y0;
font.chars[i].offsetX = charData[i].xoff;
font.chars[i].offsetY = baseline + charData[i].yoff;
font.chars[i].advanceX = (int)charData[i].xadvance;
}
free(charData);
return font;
}
#endif
#endif