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Add transform_into_voxels_from method for volumes
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Lines changed: 263 additions & 79 deletions

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‎examples/cells.ipynb‎

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‎examples/cthead.ipynb‎

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"\n",
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"# Create and configure scene\n",
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"root = libcarna.node()\n",
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"libcarna.volume(\n",
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"volume = libcarna.volume(\n",
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" GEOMETRY_TYPE_VOLUME,\n",
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" data / data.max(),\n",
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" parent=root,\n",
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"ball = libcarna.mesh_factory.create_ball(10)\n",
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"\n",
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"# Add a marker for bone (red)\n",
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"libcarna.geometry(\n",
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"marker_bone = libcarna.geometry(\n",
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" GEOMETRY_TYPE_OPAQUE,\n",
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" parent=root,\n",
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" local_transform=libcarna.translate(-43, 20, 0),\n",
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")\n",
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"# Add a marker for air (green)\n",
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"libcarna.geometry(\n",
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"marker_air = libcarna.geometry(\n",
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" GEOMETRY_TYPE_OPAQUE,\n",
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" parent=root,\n",
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" local_transform=libcarna.translate(-80, 0, 0),\n",
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"Note that we use `dvr.replicate()` when adding the previously defined DVR to the renderer. This is because each\n",
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"rendering stage can only be added to one renderer, hence, we replicate it this time. Of course, we could have used the\n",
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"`dvr.replicate()` method the first time that we added the DVR to a renderer, too, but this is not mandatory. All\n",
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"rendering stages provide such a method."
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"rendering stages provide such a method.\n",
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"\n",
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"Next, we compute the voxel coordinates of the markers:"
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]
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},
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{
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"cell_type": "code",
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"execution": {
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}
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},
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"outputs": [],
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"source": [
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"p_bone = volume.transform_into_voxels_from(marker_bone).intpoint()\n",
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"p_air = volume.transform_into_voxels_from(marker_air ).intpoint()"
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]
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},
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{
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"cell_type": "markdown",
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"id": "5449dd14",
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"metadata": {},
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"source": [
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"Now we can directy read out the image intensities of the markers:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 8,
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"id": "2556561b",
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"execution": {
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}
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"outputs": [
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{
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"data": {
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"text/plain": [
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"(2105, 53)"
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]
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},
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"execution_count": 8,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"data[p_bone], data[p_air]"
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]
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}
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],

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