TriangulateMesh

Splits all planar quadrangular polygon mesh faces into two triangular mesh faces.

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Mesh > Convert Quad Meshes to Triangles (Right click)

Mesh > Triangulate Mesh

STL Tools > Convert Quad Meshes to Triangles (Right click)

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TriangulateNonPlanarQuads

Splits all non-planar quadrangular polygon mesh faces into two triangular mesh faces.

Options

Distance

Any quadrangle where the distance of the quad's fourth point from the plane defined by the quad's first three points is greater than or equal to the Distance value will be triangulated.

Angle

Any quadrangle where the angle between the plane normals of the face triangles if it were triangulated is greater than or equal to the Angle value will be triangulated.

Increment

The value by which the Distance and Angle edit boxes are increased or decreased with the spinner controls.

Select Face

Select a mesh face to set the Distance and Angle values.

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Mesh > Triangulate Non-Planar Quads (Right click)

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Mesh > Mesh Edit Tools > Triangulate Non-Planar Quads

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QuadrangulateMesh

QuadrangulateMesh

Merges mesh triangles into quadrangles.

Options

Planarity

The angle between the triangles' normals.

Rectangularity

Provide a number greater than or equal to 1. If the adjacent triangles pass the planarity test then they will be merged into a quadrangle if the largest ratio of the lengths of the diagonal is less than or equal to the number you typed, then the triangles are converted to quadrangle.

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Mesh > Quadrangulate Mesh

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Merge2MeshFaces

Merges two triangular mesh faces that share an edge into one quadrangular face

 

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