| 47 | |
| 48 | |
| 49 | class Emitter(object): |
| 50 | def __init__(self): |
| 51 | super(Emitter, self).__init__() |
| 52 | self.rate = 20 |
| 53 | self.position = om2.MVector() |
| 54 | self._initialVelocity = om2.MVector(0, 1, 0) |
| 55 | self._randomize = False |
| 56 | |
| 57 | @property |
| 58 | def initialVelocity(self): |
| 59 | if self._randomize: |
| 60 | return self._randomizeVelocity() |
| 61 | return self._initialVelocity |
| 62 | |
| 63 | @initialVelocity.setter |
| 64 | def initialVelocity(self, value): |
| 65 | self._initialVelocity = value |
| 66 | |
| 67 | def randomizeVelocity(self, minimum=(-0.1, -0.1, -0.1), |
| 68 | maximum=(0.1, 0.1, 0.1)): |
| 69 | self._randomMinimum = om2.MVector(minimum) |
| 70 | self._randomMaximum = om2.MVector(maximum) |
| 71 | self._randomize = True |
| 72 | |
| 73 | def _randomizeVelocity(self): |
| 74 | v = om2.MVector() |
| 75 | for i in range(3): |
| 76 | factor = random.random() * 2 |
| 77 | v[i] = self._randomMinimum[i] + (factor * self._randomMaximum[i]) |
| 78 | v += self._initialVelocity |
| 79 | return v |
| 80 | |
| 81 | |
| 82 | class ParticleSystem(object): |