Learning > geometry > PolyfaceClip
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Examples of PolyfaceClip methods

Cut Fill

red and green meshes >
>
Compute "over and under" mesh parts
(red is meshA, green is meshB)		 const cutFill = PolyfaceClip.computeCutFill(meshA, meshB);
cutFill.meshAOverB > `
cutFill.meshBOverA > `

Unit Test

  • source: imodeljs\core\geometry\src\test\clipping\PolyfaceClip.test.ts
  • test name: "CutFill"
  • output: imodeljs\core\geometry\src\test\output\PolyfaceClip\CutFill.imjs

Section Cut

grey: closed volume mesh
green: section plane		 >
extract linework of section cut const section = PolyfaceClip.sectionPolyfaceClipPlane(facets, clipPlane);
This produces an array of LineString3d >
Clip the facet set and produce facets on the cut plane

insideClip is a boolean controlling which side of the cut is kept. |` const clippedPolyface = PolyfaceClip.clipPolyfaceClipPlaneWithClosureFace(facets, clipPlane, insideClip, true);' | | Lower and upper parts | >

Unit Test:

  • source: imodeljs\core\geometry\src\test\clipping\PolyfaceClip.test.ts
  • test name: "ClosedSection"
  • output: imodeljs\core\geometry\src\test\output\PolyfaceClip\ClosedSection.imjs

Last Updated: 08 January, 2020