//-----------------------------------------------------------
bool ofTrueTypeFont::loadFont(string _filename, int _fontSize, bool _bAntiAliased, bool _bFullCharacterSet, bool _makeContours, float _simplifyAmt, int _dpi) {
initLibraries();
//------------------------------------------------
if (bLoadedOk == true){
// we've already been loaded, try to clean up :
unloadTextures();
}
//------------------------------------------------
if( _dpi == 0 ){
_dpi = ttfGlobalDpi;
}
bLoadedOk = false;
bAntiAliased = _bAntiAliased;
bFullCharacterSet = _bFullCharacterSet;
fontSize = _fontSize;
bMakeContours = _makeContours;
simplifyAmt = _simplifyAmt;
dpi = _dpi;
//--------------- load the library and typeface
FT_Face face;
if(!loadFontFace(_filename,_fontSize,face,filename)){
return false;
}
FT_Set_Char_Size( face, fontSize << 6, fontSize << 6, dpi, dpi);
lineHeight = fontSize * 1.43f;
//------------------------------------------------------
//kerning would be great to support:
//ofLogNotice("ofTrueTypeFont") << "FT_HAS_KERNING ? " << FT_HAS_KERNING(face);
//------------------------------------------------------
nCharacters = (bFullCharacterSet ? 256 : 128) - NUM_CHARACTER_TO_START;
//--------------- initialize character info and textures
cps.resize(nCharacters);
if(bMakeContours){
charOutlines.clear();
charOutlines.assign(nCharacters, ofTTFCharacter());
charOutlinesNonVFlipped.assign(nCharacters, ofTTFCharacter());
}
vector<ofPixels> expanded_data(nCharacters);
long areaSum=0;
FT_Error err;
//--------------------- load each char -----------------------
for (int i = 0 ; i < nCharacters; i++){
//------------------------------------------ anti aliased or not:
int glyph = (unsigned char)(i+NUM_CHARACTER_TO_START);
if (glyph == 0xA4) glyph = 0x20AC; // hack to load the euro sign, all codes in 8859-15 match with utf-32 except for this one
err = FT_Load_Glyph( face, FT_Get_Char_Index( face, glyph ), FT_LOAD_DEFAULT );
if(err){
ofLogError("ofTrueTypeFont") << "loadFont(): FT_Load_Glyph failed for char " << i << ": FT_Error " << err;
}
if (bAntiAliased == true) FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
else FT_Render_Glyph(face->glyph, FT_RENDER_MODE_MONO);
//------------------------------------------
FT_Bitmap& bitmap= face->glyph->bitmap;
// prepare the texture:
/*int width = ofNextPow2( bitmap.width + border*2 );
int height = ofNextPow2( bitmap.rows + border*2 );
// ------------------------- this is fixing a bug with small type
// ------------------------- appearantly, opengl has trouble with
// ------------------------- width or height textures of 1, so we
// ------------------------- we just set it to 2...
if (width == 1) width = 2;
if (height == 1) height = 2;*/
if(bMakeContours){
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "character " << char(i+NUM_CHARACTER_TO_START);
}
//int character = i + NUM_CHARACTER_TO_START;
charOutlines[i] = makeContoursForCharacter( face );
charOutlinesNonVFlipped[i] = charOutlines[i];
charOutlinesNonVFlipped[i].translate(ofVec3f(0,cps[i].height));
charOutlinesNonVFlipped[i].scale(1,-1);
if(simplifyAmt>0)
charOutlines[i].simplify(simplifyAmt);
charOutlines[i].getTessellation();
if(simplifyAmt>0)
charOutlinesNonVFlipped[i].simplify(simplifyAmt);
charOutlinesNonVFlipped[i].getTessellation();
}
// -------------------------
// info about the character:
cps[i].character = i;
cps[i].height = face->glyph->bitmap_top;
cps[i].width = face->glyph->bitmap.width;
cps[i].setWidth = face->glyph->advance.x >> 6;
cps[i].topExtent = face->glyph->bitmap.rows;
cps[i].leftExtent = face->glyph->bitmap_left;
int width = cps[i].width;
int height = bitmap.rows;
cps[i].tW = width;
cps[i].tH = height;
GLint fheight = cps[i].height;
GLint bwidth = cps[i].width;
GLint top = cps[i].topExtent - cps[i].height;
GLint lextent = cps[i].leftExtent;
GLfloat corr, stretch;
//this accounts for the fact that we are showing 2*visibleBorder extra pixels
//so we make the size of each char that many pixels bigger
stretch = 0;//(float)(visibleBorder * 2);
corr = (float)(( (fontSize - fheight) + top) - fontSize);
cps[i].x1 = lextent + bwidth + stretch;
cps[i].y1 = fheight + corr + stretch;
cps[i].x2 = (float) lextent;
cps[i].y2 = -top + corr;
// Allocate Memory For The Texture Data.
expanded_data[i].allocate(width, height, 2);
//-------------------------------- clear data:
expanded_data[i].set(0,255); // every luminance pixel = 255
expanded_data[i].set(1,0);
if (bAntiAliased == true){
ofPixels bitmapPixels;
bitmapPixels.setFromExternalPixels(bitmap.buffer,bitmap.width,bitmap.rows,1);
expanded_data[i].setChannel(1,bitmapPixels);
} else {
//-----------------------------------
// true type packs monochrome info in a
// 1-bit format, hella funky
// here we unpack it:
unsigned char *src = bitmap.buffer;
for(int j=0; j <bitmap.rows;j++) {
unsigned char b=0;
unsigned char *bptr = src;
for(int k=0; k < bitmap.width ; k++){
expanded_data[i][2*(k+j*width)] = 255;
if (k%8==0){
b = (*bptr++);
}
expanded_data[i][2*(k+j*width) + 1] = b&0x80 ? 255 : 0;
b <<= 1;
}
src += bitmap.pitch;
}
//-----------------------------------
}
areaSum += (cps[i].width+border*2)*(cps[i].height+border*2);
}
vector<charProps> sortedCopy = cps;
sort(sortedCopy.begin(),sortedCopy.end(),&compare_cps);
// pack in a texture, algorithm to calculate min w/h from
// http://upcommons.upc.edu/pfc/bitstream/2099.1/7720/1/TesiMasterJonas.pdf
//ofLogNotice("ofTrueTypeFont") << "loadFont(): areaSum: " << areaSum
bool packed = false;
float alpha = logf(areaSum)*1.44269;
int w;
int h;
while(!packed){
w = pow(2,floor((alpha/2.f) + 0.5)); // there doesn't seem to be a round in cmath for windows.
//w = pow(2,round(alpha/2.f));
h = w;//pow(2,round(alpha - round(alpha/2.f)));
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
if(y + maxRowHeight > h){
alpha++;
break;
}
}
x+= sortedCopy[i].tW + border*2;
if(i==(int)cps.size()-1) packed = true;
}
}
ofPixels atlasPixelsLuminanceAlpha;
atlasPixelsLuminanceAlpha.allocate(w,h,2);
atlasPixelsLuminanceAlpha.set(0,255);
atlasPixelsLuminanceAlpha.set(1,0);
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
ofPixels & charPixels = expanded_data[sortedCopy[i].character];
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
}
cps[sortedCopy[i].character].t2 = float(x + border)/float(w);
cps[sortedCopy[i].character].v2 = float(y + border)/float(h);
cps[sortedCopy[i].character].t1 = float(cps[sortedCopy[i].character].tW + x + border)/float(w);
cps[sortedCopy[i].character].v1 = float(cps[sortedCopy[i].character].tH + y + border)/float(h);
charPixels.pasteInto(atlasPixelsLuminanceAlpha,x+border,y+border);
x+= sortedCopy[i].tW + border*2;
}
ofPixels atlasPixels;
atlasPixels.allocate(atlasPixelsLuminanceAlpha.getWidth(),atlasPixelsLuminanceAlpha.getHeight(),4);
atlasPixels.setChannel(0,atlasPixelsLuminanceAlpha.getChannel(0));
atlasPixels.setChannel(1,atlasPixelsLuminanceAlpha.getChannel(0));
atlasPixels.setChannel(2,atlasPixelsLuminanceAlpha.getChannel(0));
atlasPixels.setChannel(3,atlasPixelsLuminanceAlpha.getChannel(1));
texAtlas.allocate(atlasPixels,false);
if(bAntiAliased && fontSize>20){
texAtlas.setTextureMinMagFilter(GL_LINEAR,GL_LINEAR);
}else{
texAtlas.setTextureMinMagFilter(GL_NEAREST,GL_NEAREST);
}
texAtlas.loadData(atlasPixels);
// ------------- close the library and typeface
FT_Done_Face(face);
bLoadedOk = true;
return true;
}
//------------------------------------------------------------------
void ofTrueTypeFont::loadFont(string filename, int fontsize, bool _bAntiAliased, bool _bFullCharacterSet, bool makeContours, float simplifyAmt){
bMakeContours = makeContours;
//------------------------------------------------
if (bLoadedOk == true){
// we've already been loaded, try to clean up :
unloadTextures();
}
//------------------------------------------------
filename = ofToDataPath(filename);
bLoadedOk = false;
bAntiAlised = _bAntiAliased;
bFullCharacterSet = _bFullCharacterSet;
fontSize = fontsize;
//--------------- load the library and typeface
FT_Library library;
if (FT_Init_FreeType( &library )){
ofLog(OF_LOG_ERROR," PROBLEM WITH FT lib");
return;
}
FT_Face face;
if (FT_New_Face( library, filename.c_str(), 0, &face )) {
return;
}
FT_Set_Char_Size( face, fontsize << 6, fontsize << 6, 96, 96);
lineHeight = fontsize * 1.43f;
//------------------------------------------------------
//kerning would be great to support:
//ofLog(OF_LOG_NOTICE,"FT_HAS_KERNING ? %i", FT_HAS_KERNING(face));
//------------------------------------------------------
nCharacters = bFullCharacterSet ? 256 : 128 - NUM_CHARACTER_TO_START;
//--------------- initialize character info and textures
cps.resize(nCharacters);
if(bMakeContours){
charOutlines.clear();
charOutlines.assign(nCharacters, ofTTFCharacter());
}
vector<ofPixels> expanded_data(nCharacters);
long areaSum=0;
//--------------------- load each char -----------------------
for (int i = 0 ; i < nCharacters; i++){
//------------------------------------------ anti aliased or not:
if(FT_Load_Glyph( face, FT_Get_Char_Index( face, (unsigned char)(i+NUM_CHARACTER_TO_START) ), FT_LOAD_DEFAULT )){
ofLog(OF_LOG_ERROR,"error with FT_Load_Glyph %i", i);
}
if (bAntiAlised == true) FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
else FT_Render_Glyph(face->glyph, FT_RENDER_MODE_MONO);
//------------------------------------------
FT_Bitmap& bitmap= face->glyph->bitmap;
// prepare the texture:
/*int width = ofNextPow2( bitmap.width + border*2 );
int height = ofNextPow2( bitmap.rows + border*2 );
// ------------------------- this is fixing a bug with small type
// ------------------------- appearantly, opengl has trouble with
// ------------------------- width or height textures of 1, so we
// ------------------------- we just set it to 2...
if (width == 1) width = 2;
if (height == 1) height = 2;*/
if(bMakeContours){
if( printVectorInfo )printf("\n\ncharacter %c: \n", char( i+NUM_CHARACTER_TO_START ) );
//int character = i + NUM_CHARACTER_TO_START;
charOutlines[i] = makeContoursForCharacter( face );
if(simplifyAmt>0)
charOutlines[i].simplify(simplifyAmt);
charOutlines[i].getTessellation();
}
// -------------------------
// info about the character:
cps[i].character = i;
cps[i].height = face->glyph->bitmap_top;
cps[i].width = face->glyph->bitmap.width;
cps[i].setWidth = face->glyph->advance.x >> 6;
cps[i].topExtent = face->glyph->bitmap.rows;
cps[i].leftExtent = face->glyph->bitmap_left;
int width = cps[i].width;
int height = bitmap.rows;
cps[i].tW = width;
cps[i].tH = height;
GLint fheight = cps[i].height;
GLint bwidth = cps[i].width;
GLint top = cps[i].topExtent - cps[i].height;
GLint lextent = cps[i].leftExtent;
GLfloat corr, stretch;
//this accounts for the fact that we are showing 2*visibleBorder extra pixels
//so we make the size of each char that many pixels bigger
stretch = 0;//(float)(visibleBorder * 2);
corr = (float)(( (fontSize - fheight) + top) - fontSize);
cps[i].x1 = lextent + bwidth + stretch;
cps[i].y1 = fheight + corr + stretch;
cps[i].x2 = (float) lextent;
cps[i].y2 = -top + corr;
// Allocate Memory For The Texture Data.
expanded_data[i].allocate(width, height, 2);
//-------------------------------- clear data:
expanded_data[i].set(0,255); // every luminance pixel = 255
expanded_data[i].set(1,0);
if (bAntiAlised == true){
ofPixels bitmapPixels;
bitmapPixels.setFromExternalPixels(bitmap.buffer,bitmap.width,bitmap.rows,1);
expanded_data[i].setChannel(1,bitmapPixels);
} else {
//-----------------------------------
// true type packs monochrome info in a
// 1-bit format, hella funky
// here we unpack it:
unsigned char *src = bitmap.buffer;
for(int j=0; j <bitmap.rows;j++) {
unsigned char b=0;
unsigned char *bptr = src;
for(int k=0; k < bitmap.width ; k++){
expanded_data[i][2*(k+j*width)] = 255;
if (k%8==0){
b = (*bptr++);
}
expanded_data[i][2*(k+j*width) + 1] = b&0x80 ? 255 : 0;
b <<= 1;
}
src += bitmap.pitch;
}
//-----------------------------------
}
areaSum += (cps[i].width+border*2)*(cps[i].height+border*2);
}
vector<charProps> sortedCopy = cps;
sort(sortedCopy.begin(),sortedCopy.end(),&compare_cps);
// pack in a texture, algorithm to calculate min w/h from
// http://upcommons.upc.edu/pfc/bitstream/2099.1/7720/1/TesiMasterJonas.pdf
//cout << areaSum << endl;
bool packed = false;
float alpha = logf(areaSum)*1.44269;
int w;
int h;
while(!packed){
w = pow(2,floor((alpha/2.f) + 0.5)); // there doesn't seem to be a round in cmath for windows.
//w = pow(2,round(alpha/2.f));
h = w;//pow(2,round(alpha - round(alpha/2.f)));
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
if(y + maxRowHeight > h){
alpha++;
break;
}
}
x+= sortedCopy[i].tW + border*2;
if(i==(int)cps.size()-1) packed = true;
}
}
ofPixels atlasPixels;
atlasPixels.allocate(w,h,2);
atlasPixels.set(0,255);
atlasPixels.set(1,0);
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
ofPixels & charPixels = expanded_data[sortedCopy[i].character];
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
}
cps[sortedCopy[i].character].t2 = float(x + border)/float(w);
cps[sortedCopy[i].character].v2 = float(y + border)/float(h);
cps[sortedCopy[i].character].t1 = float(cps[sortedCopy[i].character].tW + x + border)/float(w);
cps[sortedCopy[i].character].v1 = float(cps[sortedCopy[i].character].tH + y + border)/float(h);
charPixels.pasteInto(atlasPixels,x+border,y+border);
x+= sortedCopy[i].tW + border*2;
}
texAtlas.allocate(atlasPixels.getWidth(),atlasPixels.getHeight(),GL_LUMINANCE_ALPHA,false);
if(bAntiAlised && fontsize>14){
texAtlas.setTextureMinMagFilter(GL_LINEAR,GL_LINEAR);
}else{
texAtlas.setTextureMinMagFilter(GL_NEAREST,GL_NEAREST);
}
texAtlas.loadData(atlasPixels.getPixels(),atlasPixels.getWidth(),atlasPixels.getHeight(),GL_LUMINANCE_ALPHA);
// ------------- close the library and typeface
FT_Done_Face(face);
FT_Done_FreeType(library);
bLoadedOk = true;
}
//-----------------------------------------------------------
bool ofTrueTypeFont::load(string _filename, int _fontSize, bool _bAntiAliased, bool _bFullCharacterSet, bool _makeContours, float _simplifyAmt, int _dpi) {
#if defined(TARGET_ANDROID)
ofAddListener(ofxAndroidEvents().unloadGL,this,&ofTrueTypeFont::unloadTextures);
ofAddListener(ofxAndroidEvents().reloadGL,this,&ofTrueTypeFont::reloadTextures);
#endif
int border = 1;
initLibraries();
// if we've already been loaded, try to clean up :
unloadTextures();
if( _dpi == 0 ){
_dpi = ttfGlobalDpi;
}
bLoadedOk = false;
bAntiAliased = _bAntiAliased;
bFullCharacterSet = _bFullCharacterSet;
fontSize = _fontSize;
bMakeContours = _makeContours;
simplifyAmt = _simplifyAmt;
dpi = _dpi;
//--------------- load the library and typeface
if(!loadFontFace(_filename,_fontSize,face,filename)){
return false;
}
FT_Set_Char_Size( face, fontSize << 6, fontSize << 6, dpi, dpi);
float fontUnitScale = ((float)fontSize * dpi) / (72 * face->units_per_EM);
lineHeight = face->height * fontUnitScale;
ascenderHeight = face->ascender * fontUnitScale;
descenderHeight = face->descender * fontUnitScale;
glyphBBox.set(face->bbox.xMin * fontUnitScale,
face->bbox.yMin * fontUnitScale,
(face->bbox.xMax - face->bbox.xMin) * fontUnitScale,
(face->bbox.yMax - face->bbox.yMin) * fontUnitScale);
//------------------------------------------------------
//kerning would be great to support:
//ofLogNotice("ofTrueTypeFont") << "FT_HAS_KERNING ? " << FT_HAS_KERNING(face);
//------------------------------------------------------
nCharacters = (bFullCharacterSet ? 256 : 128) - NUM_CHARACTER_TO_START;
//--------------- initialize character info and textures
cps.resize(nCharacters);
if(bMakeContours){
charOutlines.assign(nCharacters, ofTTFCharacter());
charOutlinesNonVFlipped.assign(nCharacters, ofTTFCharacter());
charOutlinesContour.assign(nCharacters, ofTTFCharacter());
charOutlinesNonVFlippedContour.assign(nCharacters, ofTTFCharacter());
}else{
charOutlines.resize(1);
}
vector<ofPixels> expanded_data(nCharacters);
long areaSum=0;
FT_Error err;
//--------------------- load each char -----------------------
for (int i = 0 ; i < nCharacters; i++){
//------------------------------------------ anti aliased or not:
int glyph = (unsigned char)(i+NUM_CHARACTER_TO_START);
if (glyph == 0xA4) glyph = 0x20AC; // hack to load the euro sign, all codes in 8859-15 match with utf-32 except for this one
err = FT_Load_Glyph( face, FT_Get_Char_Index( face, glyph ), bAntiAliased ? FT_LOAD_FORCE_AUTOHINT : FT_LOAD_DEFAULT );
if(err){
ofLogError("ofTrueTypeFont") << "loadFont(): FT_Load_Glyph failed for char " << i << ": FT_Error " << err;
}
if (bAntiAliased == true) FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
else FT_Render_Glyph(face->glyph, FT_RENDER_MODE_MONO);
//------------------------------------------
if(bMakeContours){
if(printVectorInfo){
ofLogNotice("ofTrueTypeFont") << "character " << char(i+NUM_CHARACTER_TO_START);
}
//int character = i + NUM_CHARACTER_TO_START;
charOutlines[i] = makeContoursForCharacter( face );
charOutlinesContour[i] = charOutlines[i];
charOutlinesContour[i].setFilled(false);
charOutlinesContour[i].setStrokeWidth(1);
charOutlinesNonVFlipped[i] = charOutlines[i];
charOutlinesNonVFlipped[i].translate(ofVec3f(0,cps[i].height));
charOutlinesNonVFlipped[i].scale(1,-1);
charOutlinesNonVFlippedContour[i] = charOutlines[i];
charOutlinesNonVFlippedContour[i].setFilled(false);
charOutlinesNonVFlippedContour[i].setStrokeWidth(1);
if(simplifyAmt>0){
charOutlines[i].simplify(simplifyAmt);
charOutlinesNonVFlipped[i].simplify(simplifyAmt);
charOutlinesContour[i].simplify(simplifyAmt);
charOutlinesNonVFlippedContour[i].simplify(simplifyAmt);
}
}
// -------------------------
// info about the character:
FT_Bitmap& bitmap= face->glyph->bitmap;
int width = bitmap.width;
int height = bitmap.rows;
cps[i].characterIndex = i;
cps[i].glyph = glyph;
cps[i].height = face->glyph->metrics.height>>6;
cps[i].width = face->glyph->metrics.width>>6;
cps[i].bearingX = face->glyph->metrics.horiBearingX>>6;
cps[i].bearingY = face->glyph->metrics.horiBearingY>>6;
cps[i].xmin = face->glyph->bitmap_left;
cps[i].xmax = cps[i].xmin + cps[i].width;
cps[i].ymin = -face->glyph->bitmap_top;
cps[i].ymax = cps[i].ymin + cps[i].height;
cps[i].advance = face->glyph->metrics.horiAdvance>>6;
cps[i].tW = cps[i].width;
cps[i].tH = cps[i].height;
areaSum += (cps[i].tW+border*2)*(cps[i].tH+border*2);
if(width==0 || height==0) continue;
// Allocate Memory For The Texture Data.
expanded_data[i].allocate(width, height, OF_PIXELS_GRAY_ALPHA);
//-------------------------------- clear data:
expanded_data[i].set(0,255); // every luminance pixel = 255
expanded_data[i].set(1,0);
if (bAntiAliased == true){
ofPixels bitmapPixels;
bitmapPixels.setFromExternalPixels(bitmap.buffer,bitmap.width,bitmap.rows,OF_PIXELS_GRAY);
expanded_data[i].setChannel(1,bitmapPixels);
} else {
//-----------------------------------
// true type packs monochrome info in a
// 1-bit format, hella funky
// here we unpack it:
unsigned char *src = bitmap.buffer;
for(unsigned int j=0; j <bitmap.rows;j++) {
unsigned char b=0;
unsigned char *bptr = src;
for(unsigned int k=0; k < bitmap.width ; k++){
expanded_data[i][2*(k+j*width)] = 255;
if (k%8==0){
b = (*bptr++);
}
expanded_data[i][2*(k+j*width) + 1] = b&0x80 ? 255 : 0;
b <<= 1;
}
src += bitmap.pitch;
}
//-----------------------------------
}
}
vector<charProps> sortedCopy = cps;
sort(sortedCopy.begin(),sortedCopy.end(),&compare_cps);
// pack in a texture, algorithm to calculate min w/h from
// http://upcommons.upc.edu/pfc/bitstream/2099.1/7720/1/TesiMasterJonas.pdf
//ofLogNotice("ofTrueTypeFont") << "loadFont(): areaSum: " << areaSum
bool packed = false;
float alpha = logf(areaSum)*1.44269;
int w;
int h;
while(!packed){
w = pow(2,floor((alpha/2.f) + 0.5)); // there doesn't seem to be a round in cmath for windows.
//w = pow(2,round(alpha/2.f));
h = w;//pow(2,round(alpha - round(alpha/2.f)));
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
if(y + maxRowHeight > h){
alpha++;
break;
}
}
x+= sortedCopy[i].tW + border*2;
if(i==(int)cps.size()-1) packed = true;
}
}
ofPixels atlasPixelsLuminanceAlpha;
atlasPixelsLuminanceAlpha.allocate(w,h,OF_PIXELS_GRAY_ALPHA);
atlasPixelsLuminanceAlpha.set(0,255);
atlasPixelsLuminanceAlpha.set(1,0);
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
ofPixels & charPixels = expanded_data[sortedCopy[i].characterIndex];
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
}
cps[sortedCopy[i].characterIndex].t1 = float(x + border)/float(w);
cps[sortedCopy[i].characterIndex].v1 = float(y + border)/float(h);
cps[sortedCopy[i].characterIndex].t2 = float(cps[sortedCopy[i].characterIndex].tW + x + border)/float(w);
cps[sortedCopy[i].characterIndex].v2 = float(cps[sortedCopy[i].characterIndex].tH + y + border)/float(h);
charPixels.pasteInto(atlasPixelsLuminanceAlpha,x+border,y+border);
x+= sortedCopy[i].tW + border*2;
}
texAtlas.allocate(atlasPixelsLuminanceAlpha,false);
texAtlas.setRGToRGBASwizzles(true);
if(bAntiAliased && fontSize>20){
texAtlas.setTextureMinMagFilter(GL_LINEAR,GL_LINEAR);
}else{
texAtlas.setTextureMinMagFilter(GL_NEAREST,GL_NEAREST);
}
texAtlas.loadData(atlasPixelsLuminanceAlpha);
// ------------- close the library and typeface
bLoadedOk = true;
return true;
}
//-----------------------------------------------------------
bool ofxSosoTrueTypeFont::loadFont(string filename, int fontsize, bool _bAntiAliased, bool _bFullCharacterSet, bool makeContours, bool makeMipMaps, float simplifyAmt, int dpi){ //soso - added makeMipMaps (see below)
bMakeContours = makeContours;
//------------------------------------------------
if (bLoadedOk == true){
// we've already been loaded, try to clean up :
unloadTextures();
}
//------------------------------------------------
if( dpi == 0 ){
dpi = ttfGlobalDpi;
}
filename = ofToDataPath(filename);
bLoadedOk = false;
bAntiAliased = _bAntiAliased;
bFullCharacterSet = _bFullCharacterSet;
fontSize = fontsize;
//--------------- load the library and typeface
FT_Error err;
FT_Library library;
if (err = FT_Init_FreeType( &library )){
ofLog(OF_LOG_ERROR,"ofTrueTypeFont::loadFont - Error initializing freetype lib: FT_Error = %d", err);
return false;
}
FT_Face face;
if (err = FT_New_Face( library, filename.c_str(), 0, &face )) {
// simple error table in lieu of full table (see fterrors.h)
string errorString = "unknown freetype";
if(err == 1) errorString = "INVALID FILENAME";
ofLog(OF_LOG_ERROR,"ofTrueTypeFont::loadFont - %s: %s: FT_Error = %d", errorString.c_str(), filename.c_str(), err);
return false;
}
//FT_Set_Char_Size( face, fontsize << 6, fontsize << 6, dpi, dpi); //of
//FT_Set_Char_Size( face, 0, fontsize*dpi, 0, dpi); //soso
FT_Set_Char_Size( face, 0, fontsize*64, 0, dpi); //soso
lineHeight = fontsize * 1.43f;
//------------------------------------------------------
//kerning would be great to support:
//ofLog(OF_LOG_NOTICE,"FT_HAS_KERNING ? %i", FT_HAS_KERNING(face));
//------------------------------------------------------
//nCharacters = bFullCharacterSet ? 256 : 128 - NUM_CHARACTER_TO_START;
nCharacters = bFullCharacterSet ? 512 : 128 - NUM_CHARACTER_TO_START;
//--------------- initialize character info and textures
cps.resize(nCharacters);
if(bMakeContours){
charOutlines.clear();
charOutlines.assign(nCharacters, ofTTFCharacter());
}
vector<ofPixels> expanded_data(nCharacters);
long areaSum=0;
//--------------------- load each char -----------------------
for (int i = 0 ; i < nCharacters; i++){
//------------------------------------------ anti aliased or not:
//if(err = FT_Load_Glyph( face, FT_Get_Char_Index( face, (unsigned char)(i+NUM_CHARACTER_TO_START) ), FT_LOAD_DEFAULT )){
if(err = FT_Load_Glyph( face, getFTCharIndex( face, (unsigned char)(i+NUM_CHARACTER_TO_START) ), FT_LOAD_DEFAULT )){ //soso replaced FT_Get_Char_Index with our custom version
ofLog(OF_LOG_ERROR,"ofTrueTypeFont::loadFont - Error with FT_Load_Glyph %i: FT_Error = %d", i, err);
}
if (bAntiAliased == true) FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
else FT_Render_Glyph(face->glyph, FT_RENDER_MODE_MONO);
//------------------------------------------
FT_Bitmap& bitmap= face->glyph->bitmap;
// prepare the texture:
//int width = ofNextPow2( bitmap.width + border*2 );
// int height = ofNextPow2( bitmap.rows + border*2 );
//// ------------------------- this is fixing a bug with small type
//// ------------------------- appearantly, opengl has trouble with
//// ------------------------- width or height textures of 1, so we
//// ------------------------- we just set it to 2...
//if (width == 1) width = 2;
//if (height == 1) height = 2;
if(bMakeContours){
if( printVectorInfo )printf("\n\ncharacter %c: \n", char( i+NUM_CHARACTER_TO_START ) );
//int character = i + NUM_CHARACTER_TO_START;
charOutlines[i] = makeContoursForCharacter( face );
if(simplifyAmt>0)
charOutlines[i].simplify(simplifyAmt);
charOutlines[i].getTessellation();
}
// -------------------------
// info about the character:
cps[i].character = i;
cps[i].height = face->glyph->bitmap_top;
cps[i].width = face->glyph->bitmap.width;
cps[i].setWidth = face->glyph->advance.x >> 6;
cps[i].topExtent = face->glyph->bitmap.rows;
cps[i].leftExtent = face->glyph->bitmap_left;
int width = cps[i].width;
int height = bitmap.rows;
cps[i].tW = width;
cps[i].tH = height;
GLint fheight = cps[i].height;
GLint bwidth = cps[i].width;
GLint top = cps[i].topExtent - cps[i].height;
GLint lextent = cps[i].leftExtent;
GLfloat corr, stretch;
//this accounts for the fact that we are showing 2*visibleBorder extra pixels
//so we make the size of each char that many pixels bigger
stretch = 0;//(float)(visibleBorder * 2);
corr = (float)(( (fontSize - fheight) + top) - fontSize);
cps[i].x1 = lextent + bwidth + stretch;
cps[i].y1 = fheight + corr + stretch;
cps[i].x2 = (float) lextent;
cps[i].y2 = -top + corr;
// Allocate Memory For The Texture Data.
expanded_data[i].allocate(width, height, 2);
//-------------------------------- clear data:
expanded_data[i].set(0,255); // every luminance pixel = 255
expanded_data[i].set(1,0);
if (bAntiAliased == true){
ofPixels bitmapPixels;
bitmapPixels.setFromExternalPixels(bitmap.buffer,bitmap.width,bitmap.rows,1);
expanded_data[i].setChannel(1,bitmapPixels);
} else {
//-----------------------------------
// true type packs monochrome info in a
// 1-bit format, hella funky
// here we unpack it:
unsigned char *src = bitmap.buffer;
for(int j=0; j <bitmap.rows;j++) {
unsigned char b=0;
unsigned char *bptr = src;
for(int k=0; k < bitmap.width ; k++){
expanded_data[i][2*(k+j*width)] = 255;
if (k%8==0){
b = (*bptr++);
}
expanded_data[i][2*(k+j*width) + 1] = b&0x80 ? 255 : 0;
b <<= 1;
}
src += bitmap.pitch;
}
//-----------------------------------
}
areaSum += (cps[i].width+border*2)*(cps[i].height+border*2);
}
vector<charProps> sortedCopy = cps;
sort(sortedCopy.begin(),sortedCopy.end(),&compare_cps);
// pack in a texture, algorithm to calculate min w/h from
// http://upcommons.upc.edu/pfc/bitstream/2099.1/7720/1/TesiMasterJonas.pdf
//cout << areaSum << endl;
bool packed = false;
float alpha = logf(areaSum)*1.44269;
int w;
int h;
while(!packed){
w = pow(2,floor((alpha/2.f) + 0.5)); // there doesn't seem to be a round in cmath for windows.
//w = pow(2,round(alpha/2.f));
h = w;//pow(2,round(alpha - round(alpha/2.f)));
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
if(y + maxRowHeight > h){
alpha++;
break;
}
}
x+= sortedCopy[i].tW + border*2;
if(i==(int)cps.size()-1) packed = true;
}
}
ofPixels atlasPixels;
atlasPixels.allocate(w,h,2);
atlasPixels.set(0,255);
atlasPixels.set(1,0);
int x=0;
int y=0;
int maxRowHeight = sortedCopy[0].tH + border*2;
for(int i=0;i<(int)cps.size();i++){
ofPixels & charPixels = expanded_data[sortedCopy[i].character];
if(x+sortedCopy[i].tW + border*2>w){
x = 0;
y += maxRowHeight;
maxRowHeight = sortedCopy[i].tH + border*2;
}
cps[sortedCopy[i].character].t2 = float(x + border)/float(w);
cps[sortedCopy[i].character].v2 = float(y + border)/float(h);
cps[sortedCopy[i].character].t1 = float(cps[sortedCopy[i].character].tW + x + border)/float(w);
cps[sortedCopy[i].character].v1 = float(cps[sortedCopy[i].character].tH + y + border)/float(h);
charPixels.pasteInto(atlasPixels,x+border,y+border);
x+= sortedCopy[i].tW + border*2;
}
texAtlas.allocate(atlasPixels.getWidth(),atlasPixels.getHeight(),GL_LUMINANCE_ALPHA,false);
if(bAntiAliased && fontsize>20){
if (makeMipMaps) { //soso
//texAtlas.enableMipmaps();
//texAtlas.setTextureMinMagFilter(GL_LINEAR_MIPMAP_LINEAR,GL_LINEAR_MIPMAP_LINEAR); //soso
} else //soso
texAtlas.setTextureMinMagFilter(GL_LINEAR,GL_LINEAR);
}else{
texAtlas.setTextureMinMagFilter(GL_NEAREST,GL_NEAREST);
}
texAtlas.loadData(atlasPixels.getPixels(),atlasPixels.getWidth(),atlasPixels.getHeight(),GL_LUMINANCE_ALPHA);
///////////////////////////////////////////////////////////////////////sosoAddon
//until ofTexture fully supports mipmaps, we gotta do it manually here - AFTER loadData is called on the texture
//it's a redo of what happens inside tex.loadData(), but instead we build the mipmaps
if(makeMipMaps){
glEnable(texAtlas.getTextureData().textureTarget);
glBindTexture(texAtlas.getTextureData().textureTarget, (GLuint) texAtlas.getTextureData().textureID);
glTexParameteri(texAtlas.getTextureData().textureTarget, GL_GENERATE_MIPMAP_SGIS, true);
glTexParameteri( texAtlas.getTextureData().textureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri( texAtlas.getTextureData().textureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri( texAtlas.getTextureData().textureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri( texAtlas.getTextureData().textureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
gluBuild2DMipmaps(texAtlas.getTextureData().textureTarget, texAtlas.getTextureData().glType,
w, h, texAtlas.getTextureData().glType, texAtlas.getTextureData().pixelType, atlasPixels.getPixels());
glDisable(texAtlas.getTextureData().textureTarget);
}
//////////////////////////////////////////////////////////////////////
//Sosolimited - load kerning pairs
//initialize all pairs to 0
for (int i = 0; i < FONT_NUM_CHARS; i++) {
for (int j = 0; j < FONT_NUM_CHARS; j++) {
kerningPairs[i][j] = 0;
}
}
//find out if the face has kerning
FT_Bool use_kerning = (FT_Bool)FT_HAS_KERNING(face);
if(use_kerning) printf("ofxSosoTrueTypeFont::loadFont() - kerning is supported\n");
else printf("ofxSosoTrueTypeFont::loadFont() - kerning is NOT supported\n");
FT_UInt glyph_index_r, glyph_index_l;
for (int i = 0; i < FONT_NUM_CHARS; i++) {
// convert character code to glyph index
glyph_index_r = FT_Get_Char_Index(face, i + NUM_CHARACTER_TO_START);
for (int j = 0; j < FONT_NUM_CHARS; j++) {
// convert character code to glyph index
glyph_index_l = FT_Get_Char_Index(face, j + NUM_CHARACTER_TO_START);
// retrieve kerning distance
if (use_kerning && glyph_index_l && glyph_index_r) {
FT_Vector delta;
FT_Get_Kerning( face, glyph_index_l, glyph_index_r, FT_KERNING_DEFAULT, &delta );
kerningPairs[i][j] = delta.x >> 6;
//if(i<127)
//if(fabs((float)kerningPairs[i][j]) > 0) printf("kerningPairs: %c%c = %d, delta = %d\n", i + NUM_CHARACTER_TO_START, j + NUM_CHARACTER_TO_START, kerningPairs[i][j], delta.x);
}
}
}