Package javax.media.j3d

Examples of javax.media.j3d.TriangleArray

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/* 70 */     return createNode(j3dClass, new Class[] { Integer.TYPE, Integer.TYPE, Integer.TYPE, this.texCoordSetMap.getClass() }, new Object[] { new Integer(this.vertexCount), new Integer(this.vertexFormat), new Integer(this.texCoordSetCount), this.texCoordSetMap });
/*    */   }
/*    */
/*    */   protected SceneGraphObject createNode()
/*    */   {
/* 83 */     return new TriangleArray(this.vertexCount, this.vertexFormat, this.texCoordSetCount, this.texCoordSetMap);
/*    */   }
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        Shape3D leafShape3D = (Shape3D) branchGroup.getChild(0);

        // test position and geometry
        Geometry leafGeometry = leafShape3D.getGeometry();
        assertTrue(leafGeometry instanceof TriangleArray);
        TriangleArray leafTriangle = (TriangleArray) leafGeometry;
        assertEquals(3, leafTriangle.getVertexCount());

        Point3d actualStartPoint = new Point3d();
        Point3d actualEndPoint1 = new Point3d();
        Point3d actualEndPoint2 = new Point3d();
        leafTriangle.getCoordinate(0, actualStartPoint);
        leafTriangle.getCoordinate(1, actualEndPoint1);
        leafTriangle.getCoordinate(2, actualEndPoint2);
        PointTestHelper.assertPointEquals(new Point3d(0, 0, 0), actualStartPoint);
        PointTestHelper.assertPointEquals(leaf3DState.getEndPoint1().toPointValue(), actualEndPoint1);
        PointTestHelper.assertPointEquals(leaf3DState.getEndPoint2().toPointValue(), actualEndPoint2);
    }
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    protected void tearDown() throws Exception {
        super.tearDown();
    }

    public void testComputeArea() {
        TriangleArray triangle;
        double area;

        // first test : all points are (0,0,0)
        triangle = new TriangleArray(3, GeometryArray.COORDINATES);
        triangle.setCoordinate(0, new Point3d(0, 0, 0));
        triangle.setCoordinate(1, new Point3d(0, 0, 0));
        triangle.setCoordinate(2, new Point3d(0, 0, 0));
        area = AreaHelper.computeArea(triangle);
        assertEquals(0d, area, 0.0000001);

        // second test : right triangle
        triangle = new TriangleArray(3, GeometryArray.COORDINATES);
        triangle.setCoordinate(0, new Point3d(0, 0, 0));
        triangle.setCoordinate(1, new Point3d(3, 0, 0));
        triangle.setCoordinate(2, new Point3d(3, 1, 0));
        area = AreaHelper.computeArea(triangle);
        assertEquals(1.5, area, 0.0000001);

        // second test : isosceles triangle
        triangle = new TriangleArray(3, GeometryArray.COORDINATES);
        triangle.setCoordinate(0, new Point3d(0, 1, 1));
        triangle.setCoordinate(1, new Point3d(0, 3, 1));
        triangle.setCoordinate(2, new Point3d(0, 2, 8));
        area = AreaHelper.computeArea(triangle);
        assertEquals(7, area, 0.0000001);
    }
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        Shape3D leafShape3D = (Shape3D) node;

        // test position and geometry
        Geometry leafGeometry = leafShape3D.getGeometry();
        assertTrue(leafGeometry instanceof TriangleArray);
        TriangleArray leafTriangle = (TriangleArray) leafGeometry;
        assertEquals(3, leafTriangle.getVertexCount());

        Point3d actualStartPoint = new Point3d();
        Point3d actualEndPoint1 = new Point3d();
        Point3d actualEndPoint2 = new Point3d();
        leafTriangle.getCoordinate(0, actualStartPoint);
        leafTriangle.getCoordinate(1, actualEndPoint1);
        leafTriangle.getCoordinate(2, actualEndPoint2);
        PointTestHelper.assertPointEquals(new Point3d(0, 0, 0), actualStartPoint);
        PointTestHelper.assertPointEquals(leaf3DState.getEndPoint1().toPointValue(), actualEndPoint1);
        PointTestHelper.assertPointEquals(leaf3DState.getEndPoint2().toPointValue(), actualEndPoint2);
    }
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    protected void tearDown() throws Exception {
        super.tearDown();
    }

    public void testComputeArea() {
        TriangleArray triangle;
        double area;

        // first test : all points are (0,0,0)
        triangle = new TriangleArray(3, GeometryArray.COORDINATES);
        triangle.setCoordinate(0, new Point3d(0, 0, 0));
        triangle.setCoordinate(1, new Point3d(0, 0, 0));
        triangle.setCoordinate(2, new Point3d(0, 0, 0));
        area = AreaHelper.computeArea(triangle);
        assertEquals(0d, area, 0.0000001);

        // second test : right triangle
        triangle = new TriangleArray(3, GeometryArray.COORDINATES);
        triangle.setCoordinate(0, new Point3d(0, 0, 0));
        triangle.setCoordinate(1, new Point3d(3, 0, 0));
        triangle.setCoordinate(2, new Point3d(3, 1, 0));
        area = AreaHelper.computeArea(triangle);
        assertEquals(1.5, area, 0.0000001);

        // second test : isosceles triangle
        triangle = new TriangleArray(3, GeometryArray.COORDINATES);
        triangle.setCoordinate(0, new Point3d(0, 1, 1));
        triangle.setCoordinate(1, new Point3d(0, 3, 1));
        triangle.setCoordinate(2, new Point3d(0, 2, 8));
        area = AreaHelper.computeArea(triangle);
        assertEquals(7, area, 0.0000001);
    }
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        leafShape3D.setAppearance(appearance);
    }

    private void createLeafGeometry() {
        leafGeometry = new TriangleArray(3, GeometryArray.COORDINATES | GeometryArray.NORMALS);
        leafGeometry.setCapability(TriangleArray.ALLOW_COORDINATE_WRITE);
        leafGeometry.setCoordinate(0, new Point3d(0, 0, 0));
        resetGeometryPoints();
        leafShape3D.setGeometry(leafGeometry);
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