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ADD-WIP placeholders for cloud_to_cloud and cloud_to_mesh gh components
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‎src/gh/components/DF_cloud_to_cloud_distance/code.py‎

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#! python3
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import System
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import typing
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import Rhino
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import Rhino.Geometry as rg
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from ghpythonlib.componentbase import executingcomponent as component
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import Grasshopper as gh
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from Grasshopper.Kernel import GH_RuntimeMessageLevel as RML
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import diffCheck
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from diffCheck import diffcheck_bindings
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from diffCheck import df_cvt_bindings
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import diffCheck.df_util
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class CloudToMeshDistance(component):
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def RunScript(self,
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i_cloud_source: rg.PointCloud,
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i_cloud_target: rg.PointCloud,
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) -> [float]:
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"""
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The cloud-to-cloud component computes the distance between each point in the source point cloud and its nearest neighbour in thr target point cloud.
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:param i_cloud_source: source point cloud
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:param i_cloud_target: target point cloud to align to
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:return o_distances : list of calculated distances for each point
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"""
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if i_cloud_source is None or i_cloud_target is None:
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ghenv.Component.AddRuntimeMessage(RML.Warning, "Please provide both objects of type point clouds to compare")
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return None
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# conversion
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df_cloud_source = df_cvt_bindings.cvt_rhcloud_2_dfcloud(i_cloud_source)
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df_cloud_target = df_cvt_bindings.cvt_rhcloud_2_dfcloud(i_cloud_target)
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# calculate distances
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o_distances = cloud_2_mesh_distance(df_cloud_source, df_cloud_target)
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return o_distances
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if __name__ == "__main__":
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com = CloudToMeshDistance(component)
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o_distances = com.RunScript(
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i_cloud_source,
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i_cloud_target
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)

‎src/gh/components/DF_cloud_to_cloud_distance/icon.png‎

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‎src/gh/components/DF_cloud_to_cloud_distance/metadata.json‎

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{
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"name": "RANSACGlobalRegistration",
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"nickname": "RANSACGReg",
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"category": "diffCheck",
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"subcategory": "Registrations",
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"description": "Register two point clouds together with a feature matching based on RANSAC.",
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"exposure": 4,
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"instanceGuid": "805911b9-7ea9-4bbf-be34-00f9f225b9b3",
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"ghpython": {
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"hideOutput": true,
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"hideInput": true,
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"isAdvancedMode": true,
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"marshalOutGuids": true,
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"iconDisplay": 2,
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"inputParameters": [
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{
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"name": "i_recompute",
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"nickname": "i_recompute",
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"description": "Connect a button to recompute the registration.",
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"optional": true,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "bool"
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},
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{
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"name": "i_cloud_source",
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"nickname": "i_cloud_source",
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"description": "The source point cloud.",
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"optional": true,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "pointcloud"
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},
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{
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"name": "i_cloud_target",
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"nickname": "i_cloud_target",
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"description": "The target cloud.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "pointcloud"
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},
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{
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"name": "i_radius_kd_search",
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"nickname": "i_radius_kd_search",
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"description": "The radius used to search for neighbors in the KDTree.it is expressed relative to the point cloud size (0.01 means radiusKDTreeSearch = 1% of maxSize(pointCloud). It is used for the calculation of FPFHFeatures.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "float"
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},
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{
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"name": "i_neighbours_kd_search",
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"nickname": "i_neighbours_kd_search",
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"description": "The maximum number of neighbors to search for in the KDTree. It is used for the calculation of FPFHFeatures. A higher value will result in heavier computation but potentially more precise.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "int"
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},
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{
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"name": "i_max_corrspondence_dist",
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"nickname": "i_max_corrspondence_dist",
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"description": "The maximum distance between correspondences. A higher value will result in more correspondences, but potentially include wrong ones.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "float"
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},
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{
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"name": "is_t_estimate_pt2pt",
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"nickname": "is_t_estimate_pt2pt",
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"description": "If true it deforms the cloud to match. The transformation estimation method to use. By default, it uses a point to point transformation estimation. If true it will scale and deform the cloud.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "bool"
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},
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{
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"name": "i_ransac_n",
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"nickname": "i_ransac_n",
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"description": "The number of points to sample in the source point cloud. A higher value can result in a more precise transformation, but will take more time to compute.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "int"
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},
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{
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"name": "i_checker_dist",
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"nickname": "i_checker_dist",
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"description": "The maximum distance between correspondances in the FPFH space before testing a RanSaC model. It is exprimed in relative values (it is scaled by the size of the bounding box of the poinnt cloud).",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "float"
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},
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{
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"name": "i_similarity_threshold",
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"nickname": "i_similarity_threshold",
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"description": "The threshold for the ransac check based on edge length to consider a model as inlier. A higher value will be stricter, discarding more ransac models.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "float"
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},
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{
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"name": "i_max_iterations",
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"nickname": "i_max_iterations",
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"description": "The maximum number of iterations to run the Ransac algorithm. A higher value will take more time to compute but increases the chances of finding a good transformation.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "int"
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},
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{
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"name": "i_confidence_threshold",
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"nickname": "i_confidence_threshold",
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"description": "The threshold for the convergence criteria of the ransac models. A higher value will be stricter, discarding more ransac models.",
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"optional": false,
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"allowTreeAccess": true,
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"showTypeHints": true,
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"scriptParamAccess": "item",
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"wireDisplay": "default",
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"sourceCount": 0,
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"typeHintID": "float"
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}
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],
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"outputParameters": [
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{
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"name": "o_x_form",
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"nickname": "o_x_form",
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"description": "The computed transformation.",
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"optional": false,
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"sourceCount": 0,
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"graft": false
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}
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]
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}
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}

‎src/gh/components/DF_cloud_to_mesh_distance/code.py‎

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#! python3
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import System
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import typing
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import Rhino
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import Rhino.Geometry as rg
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from ghpythonlib.componentbase import executingcomponent as component
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import Grasshopper as gh
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from Grasshopper.Kernel import GH_RuntimeMessageLevel as RML
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import diffCheck
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from diffCheck import diffcheck_bindings
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from diffCheck import df_cvt_bindings
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import diffCheck.df_util
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class CloudToCloudDistance(component):
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def RunScript(self,
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i_cloud_source: rg.PointCloud,
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i_cloud_target: rg.PointCloud,
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) -> [float]:
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"""
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The cloud-to-cloud component computes the distance between each point in the source point cloud and its nearest neighbour in thr target point cloud.
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:param i_cloud_source: source point cloud
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:param i_cloud_target: target point cloud to align to
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:return o_distances : list of calculated distances for each point
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"""
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if i_cloud_source is None or i_cloud_target is None:
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ghenv.Component.AddRuntimeMessage(RML.Warning, "Please provide both objects of type point clouds to compare")
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return None
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# conversion
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df_cloud_source = df_cvt_bindings.cvt_rhcloud_2_dfcloud(i_cloud_source)
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df_cloud_target = df_cvt_bindings.cvt_rhcloud_2_dfcloud(i_cloud_target)
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# calculate distances
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o_distances = cloud_2_cloud_distance(df_cloud_source, df_cloud_target)
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return o_distances
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if __name__ == "__main__":
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com = CloudToCloudDistance(component)
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o_distances = com.RunScript(
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i_cloud_source,
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i_cloud_target
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)

‎src/gh/components/DF_cloud_to_mesh_distance/icon.png‎

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