fzRect& fzRect::applyTransform(const float *matrix)
{
register float output[8];
{
const float vertices[8] = {
origin.x, origin.y,
origin.x + size.width, origin.y,
origin.x + size.width, origin.y + size.height,
origin.x, origin.y + size.height
};
// Hardware accelerated vertices calculation
fzMath_mat4Vec2(matrix, vertices, output);
}
origin.x = fzMin(fzMin(fzMin(output[0], output[2]), output[4]), output[6]);
origin.y = fzMin(fzMin(fzMin(output[1], output[3]), output[5]), output[7]);
size.width = (fzMax(fzMax(fzMax(output[0], output[2]), output[4]), output[6])) - origin.x;
size.height = (fzMax(fzMax(fzMax(output[1], output[3]), output[5]), output[7])) - origin.y;
return *this;
}
void Label::createFontChars()
{
// Get string length
fzUInt m_stringLen = m_string.size();
Sprite *fontChar = static_cast<Sprite*>(m_children.front());
if(m_stringLen > 0)
{
// Is font available?
if(p_font == NULL) {
FZLOGERROR("Label: Impossible to generate label, font config is missing.");
return;
}
// Precalculate label size
fzFloat longestLine = 0;
fzUInt currentLine = 0;
char charId = 0, prevId = 0;
fzFloat lineWidth[100];
memset(lineWidth, 0, sizeof(fzFloat) * 100);
for(fzUInt i = 0; i < m_stringLen; ++i) {
charId = m_string.at(i);
if(charId < 0)
FZ_RAISE("Label: CHAR[] doesn't exist. It's negative.");
if( charId == '\n') {
longestLine = fzMax(longestLine, lineWidth[currentLine]);
++currentLine;
}else {
lineWidth[currentLine] += p_font->getCharInfo(charId).xAdvance + m_horizontalPadding + p_font->getKerning(prevId, charId);
prevId = charId;
}
}
longestLine = fzMax(longestLine, lineWidth[currentLine]);
fzFloat lineHeight = p_font->getLineHeight() + m_verticalPadding;
fzFloat totalHeight = lineHeight * (currentLine+1);
fzInt nextFontPositionY = totalHeight - lineHeight;
fzInt nextFontPositionX = 0;
prevId = 0; currentLine = 0;
for(fzUInt i = 0; i < m_stringLen; ++i)
{
charId = m_string.at(i);
// line jump
if (charId == '\n') {
nextFontPositionY -= lineHeight;
nextFontPositionX = 0;
++currentLine;
continue;
}
// config line start point
if (nextFontPositionX == 0)
{
switch (m_alignment) {
case kFZLabelAlignment_left:
nextFontPositionX = 0;
break;
case kFZLabelAlignment_right:
nextFontPositionX = longestLine - lineWidth[currentLine];
//nextFontPositionX = (longestLine - lineWidth[currentLine])/2.0f;
break;
case kFZLabelAlignment_center:
nextFontPositionX = (longestLine - lineWidth[currentLine])/2.0f;
break;
default:
break;
}
}
// get font def
const fzCharDef& fontDef = p_font->getCharInfo(static_cast<unsigned char>(charId));
if(fontDef.xAdvance == 0) {
char toPrint[3];
printChar(toPrint, charId);
FZLOGERROR("Label: CHAR[%d] '%s' is not included.", charId, toPrint);
nextFontPositionX += p_font->getLineHeight();
continue;
}
// get sprite
if( fontChar == NULL ) {
fontChar = new Sprite();
addChild(fontChar);
}else {
// reusing sprites
fontChar->setIsVisible(true);
}
// config sprite
nextFontPositionX += p_font->getKerning(prevId, charId);
fzFloat yOffset = p_font->getLineHeight() - fontDef.yOffset;
fzPoint fontPos = fzPoint(nextFontPositionX + fontDef.xOffset + fontDef.width * 0.5f,
nextFontPositionY + yOffset - fontDef.height * 0.5f );
fontChar->setTextureRect(fontDef.getRect());
fontChar->setPosition(fontPos);
fontChar->setColor(m_color);
// next sprite
nextFontPositionX += fontDef.xAdvance + m_horizontalPadding;
prevId = charId;
fontChar = static_cast<Sprite*>(fontChar->next());
}
// new content size
setContentSize(fzSize(longestLine, totalHeight));
}else{
setContentSize(FZSizeZero);
}
// make sprites not longer used hidden.
for(; fontChar; fontChar = static_cast<Sprite*>(fontChar->next()))
fontChar->setIsVisible(false);
}
