예제 #1
0
void MFixedRenderer::drawText(MOText * textObj)
{
    M_PROFILE_SCOPE(MFixedRenderer::drawText);
	MFont * font = textObj->getFont();
	const char * text = textObj->getText();
	vector <float> * linesOffset = textObj->getLinesOffset();
	
	if(! (strlen(text) > 0 && font))
		return;
	
	if(linesOffset->size() == 0)
		return;
	
	MRenderingContext * render = MEngine().getInstance()->getRenderingContext();
	
	
	render->enableBlending();
	render->enableTexture();
	render->disableLighting();
	
	render->setColor4(*textObj->getColor());
	render->setBlendingMode(M_BLENDING_ALPHA);
	
	static MVector2 vertices[4];
	static MVector2 texCoords[4];
	
	render->disableNormalArray();
	render->disableColorArray();
	render->enableVertexArray();
	render->enableTexCoordArray();
	
	render->setVertexPointer(M_FLOAT, 2, vertices);
	render->setTexCoordPointer(M_FLOAT, 2, texCoords);
	
	render->bindTexture(font->getTextureId());
	
	unsigned int lineId = 0;
	float lineOffset = (*linesOffset)[0];
	
	float size = textObj->getSize();
	float tabSize = size*2;
	float fontSize = (float)font->getFontSize();
	float widthFactor = font->getTextureWith() / fontSize;
	float heightFactor = font->getTextureHeight() / fontSize;
	float xc = 0, yc = 0;
	
	unsigned int i;
	unsigned int textLen = strlen(text);
	for(i=0; i<textLen; i++)
	{
		if(text[i] == '\n') // return
		{
			if(((i+1) < textLen))
			{
				lineId++;
				lineOffset = (*linesOffset)[lineId];
				
				yc += size;
				xc = 0;
			}
			continue;
		}
		
		if(text[i] == '\t') // tab
		{
			int tab = (int)(xc / tabSize) + 1;
			xc = tab*tabSize;
			continue;
		}
		
		// get character
		unsigned int charCode = (unsigned int)((unsigned char)text[i]);
		MCharacter * character = font->getCharacter(charCode);
		if(! character)
			continue;
		
		MVector2 pos = character->getPos();
		MVector2 scale = character->getScale();
		MVector2 offset = character->getOffset() * size + MVector2(lineOffset, 0);
		
		float width = scale.x * widthFactor * size;
		float height = scale.y * heightFactor * size;
		
		// construct quad
		texCoords[0] = MVector2(pos.x, (pos.y + scale.y));
		vertices[0] = MVector2(xc, (yc + height)) + offset;						
		
		texCoords[1] = MVector2((pos.x + scale.x), (pos.y + scale.y));	
		vertices[1] = MVector2((xc + width), (yc + height)) + offset;							
		
		texCoords[3] = MVector2((pos.x + scale.x), pos.y);	
		vertices[3] = MVector2((xc + width), yc) + offset;							
		
		texCoords[2] = MVector2(pos.x, pos.y);				
		vertices[2] = MVector2(xc, yc) + offset;
		
		// draw quad
		render->drawArray(M_PRIMITIVE_TRIANGLE_STRIP, 0, 4);
		
		//move to next character
		xc += character->getXAdvance() * size;
	}	
}
예제 #2
0
void MOText::updateLinesOffset(void)
{
	MFont * font = getFont();
	const char * text = m_text.getData();

	float tabSize = m_size*2;
	float fontSize = (float)font->getFontSize();
	float widthFactor = font->getTextureWith() / fontSize;
	float xc = 0;
	float min = 0;
	float max = 0;

	// bounding box
	MVector3 * boxMin = m_boundingBox.getMin();
	MVector3 * boxMax = m_boundingBox.getMax();
	
	// clear lines
	m_linesOffset.clear();

	unsigned int i;
	unsigned int size = strlen(text);
	for(i=0; i<size; i++)
	{
		if(text[i] == '\n') // return
		{
			switch(m_align)
			{
			case M_ALIGN_LEFT:
				m_linesOffset.push_back(0);
				break;
			case M_ALIGN_RIGHT:
				m_linesOffset.push_back(-(max - min));
				break;
			case M_ALIGN_CENTER:
				m_linesOffset.push_back(-(max - min)*0.5f);
				break;
			}

			min = 0;
			max = 0;
			xc = 0;
			continue;
		}

		if(text[i] == '\t') // tab
		{
			int tab = (int)(xc / tabSize) + 1;
			xc = tab*tabSize;
			continue;
		}

		// get character
		unsigned int charCode = (unsigned int)((unsigned char)text[i]);
		MCharacter * character = font->getCharacter(charCode);
		if(! character)
			continue;

		MVector2 scale = character->getScale();
		MVector2 offset = character->getOffset() * m_size;

		float width = scale.x * widthFactor * m_size;

		float charMin = xc + offset.x;
		float charMax = charMin + width;

		if(charMin < min)
			min = charMin;

		if(charMax > max)
			max = charMax;

		//move to next character
		xc += character->getXAdvance() * m_size;

		// last char
		if((i + 1) == size)
		{
			switch(m_align)
			{
			case M_ALIGN_LEFT:
				m_linesOffset.push_back(0);
				break;
			case M_ALIGN_RIGHT:
				m_linesOffset.push_back(-(max - min));
				break;
			case M_ALIGN_CENTER:
				m_linesOffset.push_back(-(max - min)*0.5f);
				break;
			}
		}
	}

	float globalOffset = boxMax->x - boxMin->x;

	switch(m_align)
	{
	case M_ALIGN_RIGHT:
		boxMin->x -= globalOffset;
		boxMax->x -= globalOffset;
		break;
	case M_ALIGN_CENTER:
		boxMin->x -= globalOffset*0.5f;
		boxMax->x -= globalOffset*0.5f;
		break;
	}
}
예제 #3
0
bool M_loadFont(const char * filename, void * data, void * arg)
{
	MFont * font = (MFont *)data;
	
	int pen_x, pen_y, max_y;
	unsigned int n, max_code = 4096;
	unsigned int size = font->getFontSize();
	unsigned int space = 2;
	unsigned int width = 1024;
	unsigned int height = 0;

	MImage image;

	FT_GlyphSlot slot;
	FT_Library library;
	FT_Face face;
	FT_Byte * file_base;
	FT_Long file_size;


	// init
	FT_Error error = FT_Init_FreeType(&library); 
	if(error){
		printf("ERROR Load Font : unable to init FreeType\n");
		return false;
	}
	
	
	// open file
	MFile * file = M_fopen(filename, "rb");
	if(! file)
	{
		FT_Done_FreeType(library);
		printf("ERROR Load Font : can't read file %s\n", filename);
		return false;
	}
	
	M_fseek(file, 0, SEEK_END);
	file_size = M_ftell(file);
	M_rewind(file);
	
	file_base = new FT_Byte[file_size];
	if(file_size != M_fread(file_base, sizeof(FT_Byte), file_size, file))
	{
		M_fclose(file);
		FT_Done_FreeType(library);
		delete [] file_base;
		return false;
	}
	
	
	// read font
	error = FT_New_Memory_Face(library, file_base, file_size, 0, &face);
	M_fclose(file);
	
	if(error)
	{
		printf("ERROR Load Font : unable to read data %s\n", filename);
		FT_Done_FreeType(library);
		delete [] file_base;
		return false;
	}

	// set font size
	error = FT_Set_Pixel_Sizes(face, 0, size);
	if(error)
	{
		printf("ERROR Load Font : unable to size font\n");
		FT_Done_FreeType(library);
		delete [] file_base;
		return false;
	}


	// parse characters
	max_y = 0;
	slot = face->glyph;
	pen_x = space; pen_y = space; 
	for(n = 0; n<max_code; n++)
	{
		// load glyph image into the slot (erase previous one)
		error = FT_Load_Char(face, n, FT_LOAD_RENDER | FT_LOAD_NO_HINTING); 

		if(error)
			continue;

		if(FT_Get_Char_Index(face, n) == 0)
			continue;

		// max y
		max_y = MAX(max_y, slot->bitmap.rows);

		if((pen_x + slot->bitmap.width + space) > width)
		{
			pen_x = space;
			pen_y += max_y + space;
			height += max_y + space;
			max_y = 0;
		}

		// increment pen position 
		pen_x += slot->bitmap.width + space; 
	}

	if(height == 0)
	{
		printf("ERROR Load Font : unable to create font texture\n");
		FT_Done_FreeType(library);
		delete [] file_base;
		return false;
	}


	// create image
	height = getNextPowerOfTwo(height);
	image.create(M_UBYTE, width, height, 4);
	memset(image.getData(), 0, image.getSize()*sizeof(char));


	// init font
	font->setTextureWidth(width);
	font->setTextureHeight(height);


	// create font texture
	max_y = 0;
	slot = face->glyph;
	pen_x = space; pen_y = space; 
	for(n = 0; n<max_code; n++)
	{
		// load glyph image into the slot (erase previous one)
		error = FT_Load_Char(face, n, FT_LOAD_RENDER | FT_LOAD_NO_HINTING);

		if(error) 
			continue;

		if(FT_Get_Char_Index(face, n) == 0)
			continue;

		// max y
		max_y = MAX(max_y, slot->bitmap.rows);
		
		if((pen_x + slot->bitmap.width + space) > (int)image.getWidth()){
			pen_x = space;
			pen_y += max_y + space;
		}

		// get character properties
		float xAdvance = (slot->advance.x >> 6) / ((float)size);
		MVector2 offset = MVector2((float)slot->bitmap_left - 1, - (float)slot->bitmap_top - 1) / ((float)size);
		MVector2 pos = MVector2((float)(pen_x-1) / (float)width, (float)(pen_y-1) / (float)height);
		MVector2 scale = MVector2((float)(slot->bitmap.width+2) / (float)width, (float)(slot->bitmap.rows+2) / (float)height);

		// set character
		font->setCharacter(n, MCharacter(xAdvance, offset, pos, scale));

		// draw to image
		drawBitmap(&image, &slot->bitmap, pen_x, pen_y);

		// increment pen position 
		pen_x += slot->bitmap.width + space; 
	} 


	// send texture
	MEngine * engine = MEngine().getInstance();
	MRenderingContext * render = engine->getRenderingContext();
	
	// gen texture id
	unsigned int textureId = font->getTextureId();
	if(textureId == 0)
	{
		render->createTexture(&textureId);
		font->setTextureId(textureId);
	}
	
	// send texture image
	render->bindTexture(textureId);
	render->setTextureUWrapMode(M_WRAP_REPEAT);
	render->setTextureVWrapMode(M_WRAP_REPEAT);
	render->sendTextureImage(&image, 0, 1, 0);

	// finish
	FT_Done_FreeType(library);
	delete [] file_base;
	return true;
}
예제 #4
0
void MOText::prepare(void)
{
	MFont * font = getFont();
	const char * text = m_text.getData();

	if(! (strlen(text) > 0 && font)){
		m_boundingBox = MBox3d();
		return;
	}

	MVector3 * min = m_boundingBox.getMin();
	MVector3 * max = m_boundingBox.getMax();

	(*min) = (*max) = MVector3(0, 0, 0);

	float tabSize = m_size*2;
	float fontSize = (float)font->getFontSize();
	float widthFactor = font->getTextureWith() / fontSize;
	float heightFactor = font->getTextureHeight() / fontSize;
	float xc = 0, yc = 0;

	unsigned int i;
	unsigned int size = strlen(text);
	for(i=0; i<size; i++)
	{
		if(text[i] == '\n') // return
		{
			yc += m_size;
			xc = 0;
			continue;
		}

		if(text[i] == '\t') // tab
		{
			int tab = (int)(xc / tabSize) + 1;
			xc = tab*tabSize;
			continue;
		}

		// get character
		unsigned int charCode = (unsigned int)((unsigned char)text[i]);
		MCharacter * character = font->getCharacter(charCode);
		if(! character)
			continue;

		MVector2 scale = character->getScale();
		MVector2 offset = character->getOffset() * m_size;

		float width = scale.x * widthFactor * m_size;
		float height = scale.y * heightFactor * m_size;

		MVector2 charMin = MVector2(xc, yc) + offset;
		MVector2 charMax = charMin + MVector2(width, height);

		if(charMin.x < min->x)
			min->x = charMin.x;
		if(charMin.y < min->y)
			min->y = charMin.y;

		if(charMax.x > max->x)
			max->x = charMax.x;
		if(charMax.y > max->y)
			max->y = charMax.y;

		//move to next character
		xc += character->getXAdvance() * m_size;
	}

	updateLinesOffset();
}