// TODO the switch number
func (t *SwitchModel) Draw() {
modelViewBackup := t.modelView
s := t.sw
var rotatemv mathgl.Mat4f
if s.rotate == 0 {
rotatemv = mathgl.Ident4f()
} else {
rotatemv = mathgl.HomogRotate3D(t.sw.rotate, [3]float32{0, 0, 1})
}
var scalemv mathgl.Mat4f
if s.scale == 0 {
scalemv = mathgl.Ident4f()
} else {
scalemv = mathgl.Scale3D(s.scale, s.scale, 0)
}
blockmv := scalemv.Mul4(rotatemv)
// Draw the associated blocks
// top left block
t.drawBlock(g.level.blocks[s.line][s.col], blockmv.Mul4(topLeftModelView))
// top right block
t.drawBlock(g.level.blocks[s.line][s.col+1], blockmv.Mul4(topRightModelView))
// bottom right block
t.drawBlock(g.level.blocks[s.line+1][s.col+1], blockmv.Mul4(bottomRightModelView))
// bottom left block
t.drawBlock(g.level.blocks[s.line+1][s.col], blockmv.Mul4(bottomLeftModelView))
t.ModelBase.Draw()
t.modelView = modelViewBackup
}
// Scale scales the shape relative to its center, by the given
// factors.
func (b *Base) Scale(sx, sy float32) {
b.modelMatrix = mathgl.Translate3D(b.x, b.y, 0).Mul4(mathgl.Scale3D(sx, sy, 1.0))
}