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August 31, 2021 01:51
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A Lissajous demo, produced by the intersection of two sinusoidal curves
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| import taichi as ti | |
| ti.init(ti.gpu) | |
| A = 0.2 | |
| B = 0.3 | |
| PI = 3.141592653 | |
| TWO_PI = PI * 2 | |
| alpha = 5.0 * TWO_PI | |
| beta = 3.0 * TWO_PI | |
| phase_diff = PI * 0.5 | |
| CYCLE = 10000 | |
| pos = ti.Vector.field(2, dtype=float, shape=(1,)) | |
| @ti.kernel | |
| def run(t: float): | |
| for i in range(40000): # Silly way to slow down FPS | |
| pos[0][0] = A * ti.sin(alpha * t + phase_diff) + 0.5 | |
| pos[0][1] = B * ti.sin(beta * t) + 0.5 | |
| gui = ti.GUI("Lissajous", res=(512, 512)) | |
| t = 0 | |
| gui.clear(0x112F41) | |
| gui.show() | |
| while True: | |
| run(float(t) / CYCLE) | |
| t += 1 | |
| if t == CYCLE: | |
| t = 0 | |
| gui.clear(0x112F41) | |
| gui.circles(pos.to_numpy(), color=0xffffff) | |
| gui.show() |
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