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from gem import vector |
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from gem import matrix |
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from gem import quaternion |
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# Modes |
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MODE_ORTHOGRAPHIC = 1 |
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MODE_PERSPECTIVE = 2 |
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class Camera(object): |
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def __init__(self, camType): |
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self.camType = camType |
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# Camera information |
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self.yAxis = vector.Vector(3, data=[0.0, 1.0, 0.0]) |
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self.position = vector.Vector(3) |
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self.rotation = quaternion.Quaternion() |
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self.sensitivity = 0.05 |
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self.aperature = 0 |
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# Camera modifiers |
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self.cameraRotation = matrix.Matrix(4) |
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self.cameraPosition = matrix.Matrix(4) |
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self.cameraTranslation = matrix.Matrix(4) |
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# These are required for rendering |
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self.projection = matrix.Matrix(4) |
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self.viewMatrix = matrix.Matrix(4) |
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self.viewMatrixInverse = matrix.Matrix(4) |
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# Camera will rotate around this point |
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self.originVisiblity = True |
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self.originPosition = [0.0, 0.0, 0.0] |
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# Arcball properties |
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self.cur_x = 0 |
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self.cur_y = 0 |
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self.arcball_on = False |
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def get_mode(self): |
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return self.camType |
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def clone(self): |
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camNew = Camera(self.camType) |
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camNew.set_view(self.view) |
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camNew.set_program(self.program) |
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camNew.projection = self.projection |
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camNew.position = self.position |
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camNew.rotation = self.rotation |
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return camNew |
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def set_view(self, view): |
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# Initialize view mode |
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self.view = view |
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# set proper function to setup projection |
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if self.camType is MODE_ORTHOGRAPHIC: |
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self.set_projection = self._proj_ortho |
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if not self.view.if_projection('ortho'): |
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self.view.new_projection('ortho', self.projection) |
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elif self.camType is MODE_PERSPECTIVE: |
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self.set_projection = self._proj_persp |
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if not self.view.if_projection('persp'): |
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self.view.new_projection('persp', self.projection) |
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else: |
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self.set_projection = None |
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def _proj_ortho(self, left, right, bottom, top, znear, zfar): |
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self.projection = matrix.orthographic(left, right, bottom, top, znear, zfar) |
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def _proj_persp(self, fov, aspect, znear, zfar): |
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self.projection = matrix.perspective(fov, aspect, znear, zfar) |
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def set_program(self, program): |
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self.program = program |
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if self.camType is MODE_ORTHOGRAPHIC: |
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self.view.register_shader('ortho', program) |
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elif self.camType is MODE_PERSPECTIVE: |
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self.view.register_shader('persp', program) |
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else: |
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return NotImplemented |
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def make_current(self): |
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if self.camType is MODE_ORTHOGRAPHIC: |
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self.view.set_projection('ortho', self.projection) |
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elif self.camType is MODE_PERSPECTIVE: |
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self.view.set_projection('persp', self.projection) |
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else: |
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return NotImplemented |
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def calcViewMatrix(self): |
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self.cameraRotation = self.rotation.conjugate().toMatrix() |
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self.cameraPosition = self.position * -1.0 |
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self.cameraTranslation = matrix.Matrix(4).translate(self.cameraPosition) |
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self.viewMatrix = self.cameraTranslation * self.cameraRotation |
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self.viewMatrixInverse = self.viewMatrix.inverse() |
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@property |
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def vec_up(self): |
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return self.rotation.getUp() |
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@property |
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def vec_down(self): |
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return self.rotation.getDown() |
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@property |
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def vec_left(self): |
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return self.rotation.getLeft() |
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@property |
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def vec_right(self): |
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return self.rotation.getRight() |
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@property |
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def vec_forward(self): |
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return self.rotation.getForward() |
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@property |
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def vec_back(self): |
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return self.rotation.getBack() |
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def rotate(self, axis, angle): |
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self.rotation = (quaternion.quat_from_axis_angle(axis, angle) * self.rotation).normalize() |
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def move(self, direction, amount): |
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self.position = self.position + (direction * amount * self.sensitivity) |
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def setPosition(self, position): |
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self.position = position |
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def getViewMatrix(self): |
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self.calcViewMatrix() |
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return self.viewMatrix |
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explosiveduck /
ed2d
