118 lines
2.8 KiB
Python
118 lines
2.8 KiB
Python
from scene import Scene
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cols = [(6,8),(16,17),(31,30),(5,4),(41,40),(51,50)]
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def draw_line(x0, y0, x1, y1, c):
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x0 = int(x0)
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y0 = int(y0)
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x1 = int(x1)
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y1 = int(y1)
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dx = abs(x1 - x0)
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dy = abs(y1 - y0)
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x, y = x0, y0
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sx = -1 if x0 > x1 else 1
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sy = -1 if y0 > y1 else 1
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if dx > dy:
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err = dx / 2.0
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while x != x1:
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pixel(x, y, c)
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err -= dy
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if err < 0:
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y += sy
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err += dx
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x += sx
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else:
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err = dy / 2.0
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while y != y1:
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pixel(x, y, c)
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err -= dx
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if err < 0:
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x += sx
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err += dy
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y += sy
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pixel(x, y, c)
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def lineTri(x1,y1,x2,y2,x3,y3,c):
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draw_line(x1,y1,x2,y2,c)
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draw_line(x2,y2,x3,y3,c)
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draw_line(x1,y1,x3,y3,c)
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class spinTri():
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def __init__(self):
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self.x = rnd(0,width)
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self.y = 240
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self.r = 4 + rnd(0, 4)
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self.t = rnd(0, 1)
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self.a = rnd(0, 1)
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self.vy = -0.5-rnd(0,1)
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self.c = int(rnd(0, len(cols)))
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self.colidx = 0
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self.count = rnd(0,50)
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class Triangles(Scene):
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def __init__(self):
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super().__init__()
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self.p = []
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self.t = 0.0
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self.count = 0
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self.tpo3 = (2 * 3.141592654)/3
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self.skip = False
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self.title = "Flying Triangles"
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def draw(self):
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self.skip = not self.skip
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if(self.skip):
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return
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self.t += 0.01
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self.count += 1
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for i in range(999):
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x = rnd(0, width)
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y = rnd(0, height)
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c = 0
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if(rnd(0,9) < 5):
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c = get_pixel(x -3 ,y-3)
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else:
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c = 0
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circle(x, y, 1, c)
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for pt in self.p[:]:
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pt.y += pt.vy
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pt.t += 0.05
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pt.a += 0.1
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pt.count += 1
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r = (0.8 + 0.2 * cos(pt.t * 8)) * pt.r
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x1 = pt.x + r * cos(pt.a)
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y1 = pt.y + r * sin(pt.a)
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x2 = pt.x + r * cos(pt.a + self.tpo3)
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y2 = pt.y + r * sin(pt.a + self.tpo3)
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x3 = pt.x + r * cos(pt.a + self.tpo3 * 2)
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y3 = pt.y + r * sin(pt.a + self.tpo3 * 2)
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if(int(pt.count) % 5 == 0):
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pt.colidx += 1
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if(pt.colidx >= len(cols)):
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pt.colidx = 0
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light, dark = cols[pt.colidx]
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triangle(x1, y1, x2, y2, x3, y3, light)
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lineTri(x1, y1, x2, y2, x3, y3, dark)
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if(pt.y < - 40):
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self.p.remove(pt)
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#if(self.count % 3 == 0):
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#for i in range(1):
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self.p.append(spinTri())
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# if(mousep(0)):
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# self.p.append(spinTri())
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