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Exemplo de plano cartesiano e função "desenhada"
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| from __future__ import division # não use na versão online! | |
| escala = 25 | |
| def setup(): | |
| size(800, 800) | |
| background(200, 200, 240) | |
| translate(width / 2, height / 2) | |
| textSize(14) | |
| textAlign(CENTER, CENTER) | |
| #text("Oi", 0, 0 ) | |
| stroke(50) # traço branco | |
| line(-width / 2, 0, width / 2, 0) | |
| line(0, -height / 2, 0, height / 2) | |
| fill(50) | |
| for i in range(-width // escala, height // escala): | |
| ie = i * escala | |
| circle(ie, 0, 2) | |
| if i != 0: | |
| circle(0, ie, 2) | |
| text(-i, -14, ie) | |
| text(i, ie, 10) | |
| else: | |
| text(0, 6, 10) | |
| scale(1, -1) | |
| for n in range(-16 * escala, 16 * escala): | |
| x = n / (escala) | |
| y = f(x) | |
| fill(255, 0, 0) | |
| noStroke() | |
| circle(x * escala, y * escala, 3) | |
| # print(x, y) | |
| saveFrame("desenho.png") # não use na versão online! | |
| def f(x): | |
| return (x * 3) / +20 - 10 |
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