Crop Mesh 2D

Functionality

The node takes two meshes determined by faces find them intersection and dependently of mode show either overlapping each other faces or faces of first mesh which has not overlapping.

Differently to say crop mesh can crete holes in base mesh in outer mode or base mesh can be insert in crop mesh in inner mode.

The node can take edges for base mesh and crop them according the same logic. Crop mesh always should have faces.

Prefix 2D means that the node expects from input any kind of flatten mesh but it does not mean that the mesh should only lay on XY surface. Input mesh can below or above XY surface or even can be tilted relative one.

Also this node have optional extra output socket of face index mash which should be switched on on N panel. This output gives index of old face for every new faces. It can help to assign for example colors to mesh with new topology from previous mesh. It available only ind faces mode.

Warning:

This node is not 100 % robust. Some corner cases can knock it out. If you get an error or unexpected result check:

• did not you try to plug edges instead of faces and vice versa.

• try to change accuracy parameter on N panel.

Blender mode

This mode is using internal Blender function so it is faster but can crash Blender. Also it works only with faces at this moment.

Category

CAD -> crop mesh 2d

Inputs

• Vertices - vertices of base mesh

• Faces or Edges - faces of base mesh (don’t try to plug edges)

• Vertices Crop - vertices of cropping mesh

• Faces Crop - faces of cropping mesh (don’t try to plug edges)

Outputs

• Vertices - vertices, can produce new vertices

• Faces or Edges - faces, also new edges can be added for showing holes

• Face index (face mode only) - index of old face by which new face was created

Parameters

Parameters	Type	Description
Faces	bool	Enable faces mode of input mesh, so faces should be plugged into input socket
Edges	bool	Enable edges mode of input mesh, so edges should be plugged into input socket
Inner	bool	Enable inner mode for inserting mesh into crop mesh
Outer	bool	Enable outer mode for creating holes in base mesh
Accuracy (N-panel)	int	Number of figures of decimal part of a number for comparing float values

Accuracy - In most cases there is no need in touching this parameter but there is some cases when the node can stuck in error and playing with the parameter can resolve the error. This parameter does not have any affect to performance in spite of its name.

See also

• Modifiers->Modifier Make-> Bisect

Usage

Creating holes:

• Generator-> Plane

• Matrix-> Matrix Apply to Mesh

• Viz-> Viewer Draw

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Fit mesh inside mesh:

• Generator-> Plane

• ADD: Vector-> Vector Math

• CAD-> Objects In Lite

• Number-> Random Num Gen

• Color-> Color In

• List->List Main-> List Length

• List->List Struct-> List Item

• BPY Date-> Vertex Color MK3 (No docs)

• Scene-> Objects In Lite

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Crop Voronoi diagram by some shape:

• Generator-> NGon

• Generator-> Random Vector

• Spacial-> Voronoi 2D

• Viz-> Viewer Draw

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Creating something like sewer grate:

• Generator-> Line

• Generator-> Plane

• Modifiers->Modifier Change-> Bevel

• Modifiers->Modifier Change-> Mesh Join

• Modifiers->Modifier Change-> Delete Loose

• Modifiers->Modifier Make-> Contour 2D

• Modifier Make-> Solidify

• Vector-> Vector Polar Input

• ADD, Scale: Vector-> Vector Math

• Viz-> Viewer Draw

Examples