MBox3d MOCamera::createMatrixOrientedBoundingBox(MMatrix4x4 * matrix)
{
const MVector3 * points = m_frustum.getPoints();
MVector3 min, max;
min = max = (*matrix) * points[0];
for(int i=1; i<8; i++)
{
MVector3 localPoint = (*matrix) * points[i];
min.x = MIN(min.x, localPoint.x);
min.y = MIN(min.y, localPoint.y);
min.z = MIN(min.z, localPoint.z);
max.x = MAX(max.x, localPoint.x);
max.y = MAX(max.y, localPoint.y);
max.z = MAX(max.z, localPoint.z);
}
return MBox3d(min, max);
}
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();
}
