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fix translucency model using new permittance setting

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Tim Kuipers 2019-05-20 14:18:07 +02:00
parent 88b424d36a
commit b88183f4a1
3 changed files with 33 additions and 4 deletions
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9
plugins/ImageReader/ImageReader.py
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@ -48,9 +48,9 @@ class ImageReader(MeshReader):
def _read(self, file_name):
size = max(self._ui.getWidth(), self._ui.getDepth())
return self._generateSceneNode(file_name, size, self._ui.peak_height, self._ui.base_height, self._ui.smoothing, 512, self._ui.lighter_is_higher, self._ui.use_logarithmic_function)
return self._generateSceneNode(file_name, size, self._ui.peak_height, self._ui.base_height, self._ui.smoothing, 512, self._ui.lighter_is_higher, self._ui.use_logarithmic_function, self._ui.transmittance_1mm)
def _generateSceneNode(self, file_name, xz_size, peak_height, base_height, blur_iterations, max_size, lighter_is_higher, use_logarithmic_function):
def _generateSceneNode(self, file_name, xz_size, peak_height, base_height, blur_iterations, max_size, lighter_is_higher, use_logarithmic_function, transmittance_1mm):
scene_node = SceneNode()
mesh = MeshBuilder()
@ -127,10 +127,11 @@ class ImageReader(MeshReader):
Job.yieldThread()
if use_logarithmic_function:
min_luminance = 2.0 ** (peak_height - base_height)
p = 1.0 / math.log(transmittance_1mm / 100.0, 2)
min_luminance = 2.0 ** ((peak_height - base_height) / p)
for (y, x) in numpy.ndindex(height_data.shape):
mapped_luminance = min_luminance + (1.0 - min_luminance) * height_data[y, x]
height_data[y, x] = peak_height - math.log(mapped_luminance, 2)
height_data[y, x] = peak_height - p * math.log(mapped_luminance, 2)
else:
height_data *= scale_vector.y
height_data += base_height