func (atlas *FontAtlas) Draw(text string, b Bounds) {
m := atlas.Face.Metrics()
w := pow2(font.MeasureString(atlas.Face, text).Ceil())
h := pow2(m.Ascent.Ceil() + m.Descent.Ceil())
if w > 2048 {
w = 2048
}
if h > 2048 {
h = 2048
}
b.Max.X = b.Min.X + float32(w)
b.Max.Y = b.Min.Y + float32(h)
rendered := image.NewRGBA(image.Rect(0, 0, w, h))
drawer := font.Drawer{
Dst: rendered,
Src: image.Black,
Face: atlas.Face,
}
drawer.Dot = fixed.P(0, m.Ascent.Ceil())
drawer.DrawString(text)
atlas.draw(rendered, b)
}
func (atlas *FontAtlas) Measure(text string) (size Point) {
m := atlas.Face.Metrics()
size.X = float32(font.MeasureString(atlas.Face, text).Ceil())
size.Y = float32(m.Ascent.Ceil() + m.Descent.Ceil())
return size
}
