🧇 Add cut with polyline supports & bump npm packages to version 0.6.4.

Author: alpinebuster

examples/web/threejs/editor/js/Sidebar.Object.js

@@ -253,9 +253,14 @@ function SidebarObject( editor ) {
 							const result = editor.mrmesh.cutMeshWithPolylineImpl( curMeshWrapper.mesh, floatVec );
 							// const result = curMeshWrapper.cutMeshWithPolylineImpl( floatVec );
 
-							const newVertices = result.innerMesh.vertices;
-							const newIndices = new Uint32Array( result.innerMesh.indices );
-							showMesh( newVertices, newIndices );
+							const innerVertices = result.innerMesh.vertices;
+							const innerIndices = new Uint32Array(result.innerMesh.indices);
+						
+							const outerVertices = result.outerMesh.vertices;
+							const outerIndices = new Uint32Array(result.outerMesh.indices);
+							
+							showMesh( innerVertices, innerIndices );
+							showMesh( outerVertices, outerIndices );
 							break;
 
 						case 'wasmOpSegmentByPoints':

examples/web/threejs/package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "three-meshsdk-editor",
-  "version": "0.6.3",
+  "version": "0.6.4",
   "description": "MeshMaster - ThreeJS editor for `meshsdk`.",
   "keywords": [
     "threejs",

examples/web/threejs/package.json

@@ -36,19 +36,7 @@ class BoolResults {
     }
 };
 
-/**
- *@brief Cut mesh with polyline
- *
- * 1. Project points of polyline to mesh
- * 2. Convert result vector to `cutMesh()` input type
- * 3. Do `cutMesh()` (it works only with contours without self-intersections)
- *
- * @param mesh
- * @param coordinates Must be closed
- * @param coordinatesLength 
- * @return val 
- */
-val cutMeshWithPolylineImpl( Mesh& mesh, const std::vector<float>& coordinates )
+val cutMeshWithPolylineImplTest( Mesh& mesh, const std::vector<float>& coordinates )
 {
 	std::vector<Vector3f> polyline;
 
@@ -121,22 +109,15 @@ val cutMeshWithPolylineImpl( Mesh& mesh, const std::vector<float>& coordinates )
 			}
 		}
 
-		// FIXME:
-		// auto [innerMesh, outerMesh] = returnParts_( mesh, cutResults.resultCut );
-
-		auto innerBitSet = fillContourLeft( mesh.topology, cutResults.resultCut );
-		Mesh innerMesh = mesh.cloneRegion( innerBitSet );
-
+		auto [innerMesh, outerMesh] = MRJS::returnParts( mesh, cutResults.resultCut );
 		val innerMeshData = MRJS::exportMeshMemoryView( innerMesh );
-		// val outerMeshData = MRJS::exportMeshMemoryView( outerMesh );
-
-
+		val outerMeshData = MRJS::exportMeshMemoryView( outerMesh );
 
 
 		val obj = val::object();
 		obj.set( "success", true );
 		obj.set( "innerMesh", innerMeshData );
-		// obj.set( "outerMesh", outerMeshData );
+		obj.set( "outerMesh", outerMeshData );
 		obj.set( "jsTestProjectedPoint", jsTestProjectedPoint );
 		obj.set( "jsTestProjectedContour", jsTestProjectedContour );
 		obj.set( "jsTestCutPoints", jsTestCutPoints );
@@ -153,6 +134,78 @@ val cutMeshWithPolylineImpl( Mesh& mesh, const std::vector<float>& coordinates )
 	}
 }
 
+/**
+ *@brief Cut mesh with polyline
+ *
+ * 1. Project points of polyline to mesh
+ * 2. Convert result vector to `cutMesh()` input type
+ * 3. Do `cutMesh()` (it works only with contours without self-intersections)
+ *
+ * @param mesh
+ * @param coordinates Must be closed
+ * @param coordinatesLength 
+ * @return val 
+ */
+val cutMeshWithPolylineImpl( Mesh& mesh, const std::vector<float>& coordinates )
+{
+	std::vector<Vector3f> polyline;
+
+    int coordinatesLength = coordinates.size();
+    if (coordinatesLength % 3 != 0) {
+		val obj = val::object();
+		obj.set( "success", false );
+		obj.set( "error", "Coordinates length must be a multiple of 3!" );
+
+		return obj;
+    }
+
+	polyline.reserve( coordinatesLength / 3 );
+
+	for ( size_t i = 0; i < coordinatesLength; i += 3 )
+	{
+		polyline.emplace_back( coordinates[i], coordinates[i + 1], coordinates[i + 2] );
+	}
+	Polyline3 initialPolyline;
+	initialPolyline.addFromPoints( polyline.data(), polyline.size(), true );
+
+	std::vector<MeshTriPoint> projectedPolyline;
+	projectedPolyline.reserve( initialPolyline.points.size() );
+	MeshPart m = MeshPart( mesh, nullptr );
+
+	mesh.getAABBTree(); // Create tree in parallel before loop
+	for ( Vector3f pt : initialPolyline.points )
+	{
+		MeshProjectionResult mpr = findProjection( pt, m );
+		projectedPolyline.push_back( mpr.mtp );
+	}
+
+	auto meshContour = convertMeshTriPointsToMeshContour( mesh, projectedPolyline );
+	if ( meshContour )
+	{
+		CutMeshResult cutResults = cutMesh( mesh, { *meshContour } );
+
+		auto [innerMesh, outerMesh] = MRJS::returnParts( mesh, cutResults.resultCut );
+		val innerMeshData = MRJS::exportMeshMemoryView( innerMesh );
+		val outerMeshData = MRJS::exportMeshMemoryView( outerMesh );
+
+
+		val obj = val::object();
+		obj.set( "success", true );
+		obj.set( "innerMesh", innerMeshData );
+		obj.set( "outerMesh", outerMeshData );
+
+		return obj;
+	} else {
+		std::string error = meshContour.error();
+
+		val obj = val::object();
+		obj.set( "success", false );
+		obj.set( "error", "convertMeshTriPointsToMeshContour: " + error );
+	
+		return obj;
+	}
+}
+
 /**
  *@brief Cut and extrude mesh with polyline
  *
@@ -285,4 +338,5 @@ EMSCRIPTEN_BINDINGS( ContoursCutModule )
 		.field( "fbsWithContourIntersections", &CutMeshResult::fbsWithContourIntersections );
 
 	function( "cutMeshWithPolylineImpl", &cutMeshWithPolylineImpl );
+	function( "cutMeshWithPolylineImplTest", &cutMeshWithPolylineImplTest );
 }

source/MRJavaScript/MRContoursCut.cpp

@@ -117,7 +117,11 @@ std::vector<Vector3f> parseJSCoordinates( const std::vector<float>& coordinates
  */
 std::pair<Mesh, Mesh> returnParts( const Mesh& mesh, const std::vector<EdgePath>& cut )
 {
-    Mesh innerMesh;
+	// NOTE: This works!
+	// auto innerBitSet = fillContourLeft( mesh.topology, cut );
+	// Mesh innerMesh = mesh.cloneRegion( innerBitSet );
+
+	Mesh innerMesh;
     auto innerBitSet = fillContourLeft( mesh.topology, cut );
     innerMesh.addMeshPart( {mesh, &innerBitSet} );
 

source/MRJavaScript/MRUtils.cpp

@@ -1,6 +1,6 @@
 {
   "name": "@alpinebuster/meshsdk",
-  "version": "0.6.3",
+  "version": "0.6.4",
   "description": "MeshSDK: JS/TS binding for the meshlib.",
   "type": "module",
   "main": "lib/index.js",