UnrealXR/raylib-go
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Update C sources, add new functions

Browse source
This commit is contained in:
Milan Nikolic 2018-11-17 21:34:52 +01:00
parent adf3401c3c
commit 48689803b8
28 changed files with 2681 additions and 1918 deletions
Download patch file Download diff file Expand all files Collapse all files

417
raylib/text.c
View file

@ -190,10 +190,6 @@ extern void LoadDefaultFont(void)
if (counter > 512) counter = 0; // Security check...
}
//FILE *myimage = fopen("default_font.raw", "wb");
//fwrite(image.pixels, 1, 128*128*4, myimage);
//fclose(myimage);
Image image = LoadImageEx(imagePixels, imWidth, imHeight);
ImageFormat(&image, UNCOMPRESSED_GRAY_ALPHA);
@ -204,10 +200,10 @@ extern void LoadDefaultFont(void)
// Reconstruct charSet using charsWidth[], charsHeight, charsDivisor, charsCount
//------------------------------------------------------------------------------
// Allocate space for our characters info data
// NOTE: This memory should be freed at end! --> CloseWindow()
defaultFont.chars = (CharInfo *)malloc(defaultFont.charsCount*sizeof(CharInfo));
defaultFont.chars = (CharInfo *)malloc(defaultFont.charsCount*sizeof(CharInfo));
int currentLine = 0;
int currentPosX = charsDivisor;
@ -242,7 +238,7 @@ extern void LoadDefaultFont(void)
}
defaultFont.baseSize = (int)defaultFont.chars[0].rec.height;
TraceLog(LOG_INFO, "[TEX ID %i] Default font loaded successfully", defaultFont.texture.id);
}
@ -262,7 +258,7 @@ Font GetFontDefault()
#else
Font font = { 0 };
return font;
#endif
#endif
}
// Load Font from file into GPU memory (VRAM)
@ -276,15 +272,7 @@ Font LoadFont(const char *fileName)
Font font = { 0 };
#if defined(SUPPORT_FILEFORMAT_TTF)
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);
}
if (IsFileExtension(fileName, ".ttf")) font = LoadFontEx(fileName, DEFAULT_TTF_FONTSIZE, DEFAULT_TTF_NUMCHARS, NULL);
else
#endif
#if defined(SUPPORT_FILEFORMAT_FNT)
@ -313,14 +301,19 @@ Font LoadFont(const char *fileName)
Font LoadFontEx(const char *fileName, int fontSize, int charsCount, int *fontChars)
{
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);
if (font.chars != NULL)
{
Image atlas = GenImageFontAtlas(font.chars, font.charsCount, font.baseSize, 2, 0);
font.texture = LoadTextureFromImage(atlas);
UnloadImage(atlas);
}
else font = GetFontDefault();
return font;
}
@ -333,94 +326,100 @@ CharInfo *LoadFontData(const char *fileName, int fontSize, int *fontChars, int c
#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));
CharInfo *chars = NULL;
// 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);
if (fontFile != NULL)
{
fseek(fontFile, 0, SEEK_END);
long size = ftell(fontFile); // Get file size
fseek(fontFile, 0, SEEK_SET); // Reset file pointer
// 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)
{
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;
// 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)
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);
// In case no chars count provided, default to 95
charsCount = (charsCount > 0) ? charsCount : 95;
// Fill fontChars in case not provided externally
// NOTE: By default we fill charsCount consecutevely, starting at 32 (Space)
int genFontChars = false;
if (fontChars == NULL)
{
// 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;
}
fontChars = (int *)malloc(charsCount*sizeof(int));
for (int i = 0; i < charsCount; i++) fontChars[i] = i + 32;
genFontChars = true;
}
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);
stbtt_GetCodepointHMetrics(&fontInfo, ch, &chars[i].advanceX, NULL);
chars[i].advanceX *= scaleFactor;
chars = (CharInfo *)malloc(charsCount*sizeof(CharInfo));
// 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;
// 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)
{
// 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;
}
}
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);
stbtt_GetCodepointHMetrics(&fontInfo, ch, &chars[i].advanceX, NULL);
chars[i].advanceX *= scaleFactor;
}
free(fontBuffer);
if (genFontChars) free(fontChars);
}
free(fontBuffer);
if (genFontChars) free(fontChars);
else TraceLog(LOG_WARNING, "[%s] TTF file could not be opened", fileName);
return chars;
}
@ -429,25 +428,25 @@ CharInfo *LoadFontData(const char *fileName, int fontSize, int *fontChars, int c
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,
// 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;
@ -455,9 +454,9 @@ Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int paddi
{
int offsetX = padding;
int offsetY = padding;
// NOTE: Using simple packaging, one char after another
for (int i = 0; i < charsCount; i++)
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++)
@ -467,22 +466,22 @@ Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int paddi
((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
// 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;
}
}
@ -490,13 +489,13 @@ Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int paddi
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++)
{
@ -507,12 +506,12 @@ Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int paddi
// 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
@ -527,12 +526,13 @@ Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int paddi
else TraceLog(LOG_WARNING, "Character could not be packed: %i", i);
}
free(rects);
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
@ -546,7 +546,7 @@ Image GenImageFontAtlas(CharInfo *chars, int charsCount, int fontSize, int paddi
free(atlas.data);
atlas.data = dataGrayAlpha;
atlas.format = UNCOMPRESSED_GRAY_ALPHA;
return atlas;
}
@ -563,6 +563,28 @@ void UnloadFont(Font font)
}
}
// Shows current FPS on top-left corner
// NOTE: Uses default font
void DrawFPS(int posX, int posY)
{
// NOTE: We are rendering fps every second for better viewing on high framerates
static int fps = 0;
static int counter = 0;
static int refreshRate = 20;
if (counter < refreshRate) counter++;
else
{
fps = GetFPS();
refreshRate = fps;
counter = 0;
}
// NOTE: We have rounding errors every frame, so it oscillates a lot
DrawText(FormatText("%2i FPS", fps), posX, posY, 20, LIME);
}
// Draw text (using default font)
// NOTE: fontSize work like in any drawing program but if fontSize is lower than font-base-size, then font-base-size is used
// NOTE: chars spacing is proportional to fontSize
@ -588,10 +610,10 @@ void DrawTextEx(Font font, const char *text, Vector2 position, float fontSize, f
int length = strlen(text);
int textOffsetX = 0; // Offset between characters
int textOffsetY = 0; // Required for line break!
float scaleFactor;
float scaleFactor = 0.0f;
unsigned char letter; // Current character
int index; // Index position in sprite font
unsigned char letter = 0; // Current character
int index = 0; // Index position in sprite font
scaleFactor = fontSize/font.baseSize;
@ -623,7 +645,7 @@ void DrawTextEx(Font font, const char *text, Vector2 position, float fontSize, f
i++;
}
else index = GetGlyphIndex(font, (unsigned char)text[i]);
if ((unsigned char)text[i] != ' ')
{
DrawTexturePro(font.texture, font.chars[index].rec,
@ -639,44 +661,6 @@ void DrawTextEx(Font font, const char *text, Vector2 position, float fontSize, f
}
}
// Formatting of text with variables to 'embed'
const char *FormatText(const char *text, ...)
{
static char buffer[MAX_FORMATTEXT_LENGTH];
va_list args;
va_start(args, text);
vsprintf(buffer, text, args);
va_end(args);
return buffer;
}
// Get a piece of a text string
const char *SubText(const char *text, int position, int length)
{
static char buffer[MAX_SUBTEXT_LENGTH];
int textLength = strlen(text);
if (position >= textLength)
{
position = textLength - 1;
length = 0;
}
if (length >= textLength) length = textLength;
for (int c = 0 ; c < length ; c++)
{
*(buffer + c) = *(text + position);
text++;
}
*(buffer + length) = '\0';
return buffer;
}
// Measure string width for default font
int MeasureText(const char *text, int fontSize)
{
@ -702,8 +686,8 @@ Vector2 MeasureTextEx(Font font, const char *text, float fontSize, float spacing
int tempLen = 0; // Used to count longer text line num chars
int lenCounter = 0;
float textWidth = 0;
float tempTextWidth = 0; // Used to count longer text line width
float textWidth = 0.0f;
float tempTextWidth = 0.0f; // Used to count longer text line width
float textHeight = (float)font.baseSize;
float scaleFactor = fontSize/(float)font.baseSize;
@ -761,26 +745,88 @@ int GetGlyphIndex(Font font, int character)
#endif
}
// Shows current FPS on top-left corner
// NOTE: Uses default font
void DrawFPS(int posX, int posY)
// Formatting of text with variables to 'embed'
const char *FormatText(const char *text, ...)
{
// NOTE: We are rendering fps every second for better viewing on high framerates
static char buffer[MAX_FORMATTEXT_LENGTH];
static int fps = 0;
static int counter = 0;
static int refreshRate = 20;
va_list args;
va_start(args, text);
vsprintf(buffer, text, args);
va_end(args);
if (counter < refreshRate) counter++;
else
return buffer;
}
// Get a piece of a text string
const char *SubText(const char *text, int position, int length)
{
static char buffer[MAX_SUBTEXT_LENGTH] = { 0 };
int textLength = strlen(text);
if (position >= textLength)
{
fps = GetFPS();
refreshRate = fps;
counter = 0;
position = textLength - 1;
length = 0;
}
// NOTE: We have rounding errors every frame, so it oscillates a lot
DrawText(FormatText("%2i FPS", fps), posX, posY, 20, LIME);
if (length >= textLength) length = textLength;
for (int c = 0 ; c < length ; c++)
{
*(buffer + c) = *(text + position);
text++;
}
*(buffer + length) = '\0';
return buffer;
}
// Split string into multiple strings
// NOTE: Files count is returned by parameters pointer
// NOTE: Allocated memory should be manually freed
char **SplitText(char *text, char delimiter, int *strCount)
{
#define MAX_SUBSTRING_LENGTH 128
char **strings = NULL;
int len = strlen(text);
char *strDup = (char *)malloc(len + 1);
strcpy(strDup, text);
int counter = 1;
// Count how many substrings we have on string
for (int i = 0; i < len; i++) if (text[i] == delimiter) counter++;
// Memory allocation for substrings
strings = (char **)malloc(sizeof(char *)*counter);
for (int i = 0; i < counter; i++) strings[i] = (char *)malloc(sizeof(char)*MAX_SUBSTRING_LENGTH);
char *substrPtr = NULL;
char delimiters[1] = { delimiter }; // Only caring for one delimiter
substrPtr = strtok(strDup, delimiters);
for (int i = 0; (i < counter) && (substrPtr != NULL); i++)
{
strcpy(strings[i], substrPtr);
substrPtr = strtok(NULL, delimiters);
}
*strCount = counter;
free(strDup);
return strings;
}
// Check if two text string are equal
bool IsEqualText(const char *text1, const char *text2)
{
bool result = false;
if (strcmp(text1, text2) == 0) result = true;
return result;
}
//----------------------------------------------------------------------------------
@ -815,7 +861,7 @@ static Font LoadImageFont(Image image, Color key, int firstChar)
{
if (!COLOR_EQUAL(pixels[y*image.width + x], key)) break;
}
if (!COLOR_EQUAL(pixels[y*image.width + x], key)) break;
}
@ -911,17 +957,18 @@ static Font LoadBMFont(const char *fileName)
Font font = { 0 };
font.texture.id = 0;
char buffer[MAX_BUFFER_SIZE];
char buffer[MAX_BUFFER_SIZE] = { 0 };
char *searchPoint = NULL;
int fontSize = 0;
int texWidth, texHeight;
int texWidth = 0;
int texHeight = 0;
char texFileName[129];
int charsCount = 0;
int base; // Useless data
int base = 0; // Useless data
FILE *fntFile;
FILE *fntFile = NULL;
fntFile = fopen(fileName, "rt");
@ -984,10 +1031,10 @@ static Font LoadBMFont(const char *fileName)
UnloadImage(imCopy);
}
else font.texture = LoadTextureFromImage(imFont);
UnloadImage(imFont);
free(texPath);
// Fill font characters info data
font.baseSize = fontSize;