109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
"""
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RenderPipeline
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Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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from panda3d.core import Mat4, PerspectiveLens, LVector3, LVecBase2i, LVecBase2f
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from panda3d.core import BoundingSphere
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class ShadowSource(object):
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""" Please refer to the native C++ implementation for docstrings and comments.
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This is just the python implementation, which does not contain documentation! """
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def __init__(self):
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self._slot = -1
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self._needs_update = True
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self._resolution = 512
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self._mvp = 0.0
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self._region = LVecBase2i(-1)
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self._region_uv = LVecBase2f(0.0)
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self._bounds = BoundingSphere()
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def set_resolution(self, resolution):
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self._resolution = resolution
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def set_needs_update(self, flag):
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self._needs_update = flag
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def set_slot(self, slot):
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self._slot = slot
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def set_region(self, region, region_uv):
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self._region = region
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self._region_uv = region_uv
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def clear_region(self):
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self._region = LVecBase2i(-1)
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self._region_uv = LVecBase2f(0.0)
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def get_bounds(self):
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return self._bounds
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def set_perspective_lens(self, fov, near_plane, far_plane, pos, direction):
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transform_mat = Mat4.translate_mat(-pos)
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temp_lens = PerspectiveLens(fov, fov)
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temp_lens.set_film_offset(0, 0)
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temp_lens.set_near_far(near_plane, far_plane)
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temp_lens.set_view_vector(direction, LVector3.up())
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self.set_matrix_lens(transform_mat * temp_lens.get_projection_mat())
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hexahedron = temp_lens.make_bounds()
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center = (hexahedron.get_min() + hexahedron.get_max()) * 0.5
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self._bounds = BoundingSphere(pos + center, (hexahedron.get_max() - center).length())
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def set_matrix_lens(self, mvp):
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self._mvp = mvp
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self.set_needs_update(True)
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def has_region(self):
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return (self._region.x >= 0 and self._region.y >= 0 and
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self._region.z >= 0 and self._region.w >= 0)
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def has_slot(self):
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return self._slot >= 0
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def get_slot(self):
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return self._slot
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def get_needs_update(self):
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return not self.has_region or self._needs_update
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def get_resolution(self):
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return self._resolution
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def get_mvp(self):
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return self._mvp
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def get_region(self):
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return self._region
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def get_uv_region(self):
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return self._region_uv
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def write_to_command(self, cmd):
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cmd.push_mat4(self._mvp)
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cmd.push_vec4(self._region_uv)
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