forked from Rowland/EG
134 lines
4.6 KiB
Python
134 lines
4.6 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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import struct
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from panda3d.core import TransformState, Vec3, Mat4, BoundingSphere
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from rpcore.rpobject import RPObject
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class EnvironmentProbe(RPObject):
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""" Simple class, representing an environment probe """
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def __init__(self):
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""" Inits a new environment probe """
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RPObject.__init__(self)
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self.index = -1
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self.last_update = -1
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self._transform = TransformState.make_identity()
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self._bounds = BoundingSphere(Vec3(0), 1.0)
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self._modified = True
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self._parallax_correction = True
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self._border_smoothness = 0.1
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@property
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def modified(self):
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""" Returns whether the probe was modified since the last write """
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return self._modified
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@property
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def bounds(self):
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""" Returns the probes worldspace bounds """
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return self._bounds
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@property
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def parallax_correction(self):
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""" Returns whether parallax correction is enabled for this probe """
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return self._parallax_correction
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@parallax_correction.setter
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def parallax_correction(self, value):
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""" Sets whether parallax correction is enabled for this probe """
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self._parallax_correction = value
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self._modified = True
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@property
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def border_smoothness(self):
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""" Returns the border smoothness factor """
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return self._border_smoothness
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@border_smoothness.setter
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def border_smoothness(self, value):
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""" Sets the border smoothness factor """
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self._border_smoothness = value
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self._modified = True
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def set_pos(self, *args):
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""" Sets the probe position """
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self._transform = self._transform.set_pos(Vec3(*args))
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self.update_bounds()
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def set_hpr(self, *args):
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""" Sets the probe rotation """
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self._transform = self._transform.set_hpr(Vec3(*args))
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self.update_bounds()
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def set_scale(self, *args):
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""" Sets the probe scale """
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self._transform = self._transform.set_scale(Vec3(*args))
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self.update_bounds()
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def set_mat(self, matrix):
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""" Sets the probes matrix, overrides all other transforms """
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self._transform = TransformState.make_mat(matrix)
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self.update_bounds()
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def update_bounds(self):
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""" Updates the spheres bounds """
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mat = self._transform.get_mat()
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mid_point = mat.xform_point(Vec3(0, 0, 0))
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max_point = mat.xform_point(Vec3(1, 1, 1))
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radius = (mid_point - max_point).length()
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self._bounds = BoundingSphere(mid_point, radius)
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self._modified = True
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@property
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def matrix(self):
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""" Returns the matrix of the probe """
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return self._transform.get_mat()
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def write_to_buffer(self, buffer_ptr):
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""" Writes the probe to a given byte buffer """
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data, mat = [], Mat4(self._transform.get_mat())
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mat.invert_in_place()
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for i in range(4):
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for j in range(3):
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data.append(mat.get_cell(i, j))
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data += (float(self.index),
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1.0 if self._parallax_correction else 0.0,
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self._border_smoothness, 0)
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data.append(self._bounds.get_center().x)
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data.append(self._bounds.get_center().y)
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data.append(self._bounds.get_center().z)
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data.append(self._bounds.get_radius())
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byte_data = struct.pack("f" * 20, *data)
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# 4 = sizeof float, 20 = floats per cubemap
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bytes_per_probe = 4 * 20
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buffer_ptr.set_subdata(self.index * bytes_per_probe, bytes_per_probe, byte_data)
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self._modified = False
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