kopia lustrzana https://github.com/villares/sketch-a-day
68 wiersze
2.1 KiB
Python
68 wiersze
2.1 KiB
Python
""" Tetrahedrons + PeasyCam"""
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add_library('peasycam')
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T_LIST, ROT_X, ROT_Y = [], 0, 0
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Z_MIN, Z_MAX = -800, 0
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def setup():
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cam = PeasyCam(this, 100)
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hint(DISABLE_DEPTH_TEST)
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size(800, 800, P3D)
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for _ in range(100):
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x, y, z = random(0, width), random(0, height), random(Z_MIN, Z_MAX)
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T_LIST.append(Tetrahedron(x, y, z, 75)) # 75 is the size
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def draw():
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global ROT_X, ROT_Y
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ROT_X += 0.005
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ROT_Y += 0.01
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background(0)
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strokeWeight(7)
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for tetra in T_LIST:
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# Draws only edges, or only faces if a key is pressed
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tetra.plot(ROT_X, ROT_Y, keyPressed)
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class Tetrahedron():
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""" Tetrahedron """
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def __init__(self, x, y, z, radius):
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self.x, self.y, self.z = x, y, z
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self.radius = radius
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self.points = [PVector()] * 4
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# calculate geometry
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a = radius * 2 / 3.
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self.points[0] = PVector(+a, +a, +a) # vertex 1
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self.points[1] = PVector(-a, -a, +a) # vertex 2
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self.points[2] = PVector(-a, +a, -a) # vertex 3
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self.points[3] = PVector(+a, -a, -a) # vertex 4
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# draws tetrahedron
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def plot(self, rx=0, ry=0, showFaces=False):
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c = color(map(self.x, 0, width, 255, 0),
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map(self.y, 0, height, 255, 0),
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map(self.z, Z_MIN, Z_MAX, 0, 255), 100)
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if showFaces:
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noStroke()
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fill(c)
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else:
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noFill()
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stroke(c)
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with pushMatrix():
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translate(self.x, self.y, self.z)
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rotateX(ry)
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rotateY(rx)
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beginShape(TRIANGLE_STRIP)
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p = self.points
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vertex(p[0].x, p[0].y, p[0].z) # vertex 1
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vertex(p[1].x, p[1].y, p[1].z) # vertex 2
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vertex(p[2].x, p[2].y, p[2].z) # vertex 3
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vertex(p[3].x, p[3].y, p[3].z) # vertex 4
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vertex(p[0].x, p[0].y, p[0].z) # vertex 1
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vertex(p[1].x, p[1].y, p[1].z) # vertex 2
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vertex(p[3].x, p[3].y, p[3].z) # vertex 4
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vertex(p[2].x, p[2].y, p[2].z) # vertex 3
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vertex(p[1].x, p[1].y, p[1].z) # vertex 2
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endShape(CLOSE)
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