Exemple #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;
	}	
}
Exemple #2
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();
}