python/pyxel/examples/16_transform.py

import pyxel


class App:
    def __init__(self):
        pyxel.init(200, 160, title="Transform")
        pyxel.load("assets/sample.pyxres")
        pyxel.run(self.update, self.draw)

    def update(self):
        if pyxel.btnp(pyxel.KEY_Q):
            pyxel.quit()

    def draw(self):
        pyxel.cls(1)

        x, y, w, h = 67, 27, 128, 128
        rotate = pyxel.frame_count
        scale = pyxel.sin(pyxel.frame_count) * 0.3 + 0.8
        pyxel.rectb(x, y, w, h, 2)
        pyxel.bltm(x, y, 0, 0, 0, w, h, 0, rotate=rotate, scale=scale)

        x, y, w, h = 30, 79, 8, 24
        rotate = pyxel.frame_count * -3
        scale = pyxel.sin(pyxel.frame_count + 180) * 3 + 4
        pyxel.rectb(x, y, w, h, 2)
        pyxel.blt(x, y, 0, 8, 0, w, h, 0, rotate=rotate, scale=scale)

        pyxel.dither(0.5)
        pyxel.rect(0, 0, 200, 22, 0)
        pyxel.dither(1)

        pyxel.text(9, 4, "blt(x,y,img,u,v,w,h,[colkey],[rotate],[scale])", 7)
        pyxel.text(125, 4, "[rotate]", 10)
        pyxel.text(161, 4, "[scale]", 10)

        pyxel.text(9, 12, "bltm(x,y,tm,u,v,w,h,[colkey],[rotate],[scale])", 7)
        pyxel.text(125, 12, "[rotate]", 10)
        pyxel.text(161, 12, "[scale]", 10)


App()