Instanced WireBoxVisual3D - Printable Version

Code:

MainDXViewportView.DXSceneInitialized += delegate (object sender, EventArgs args)

{

    // Create a new RenderObjectsRenderingStep that will render only wireframe instanced objects.

    //

    // If you are not rendering any other objects or want to render all objects as wireframe, then you do not need to add this new RenderObjectsRenderingStep

    // and can just set the OverrideRasterizerState on the DefaultRenderObjectsRenderingStep.



    var renderWireframeInstancesRenderingStep = new RenderObjectsRenderingStep("RenderWireframeInstances");



    // Override RasterizerState to render objects are wireframe instead of solid objects (not that line thickness is always 1 in this case)

    renderWireframeInstancesRenderingStep.OverrideRasterizerState = MainDXViewportView.DXScene.DXDevice.CommonStates.WireframeMultisampleCullNone;



    // Render only objects in the ComplexGeometryRenderingQueue (instanced objects are always put into this rendering queue).

    // Note that if you use multiple instanced objects or some other complex objects with many positions or lines

    // (defined by DXScene.MeshTriangleIndicesCountRequiredForComplexGeometry and DXScene.LinesCountRequiredForComplexGeometry -

    // you can also increase those two numbers to prevent putting other objects into ComplexGeometryRenderingQueue)

    // then you will need to create another RenderObjectsRenderingStep and also set the FilterObjectsFunction (one will show only instances with wireframe and the other other complex objects).

    renderWireframeInstancesRenderingStep.FilterRenderingQueuesFunction = queue => queue == MainDXViewportView.DXScene.ComplexGeometryRenderingQueue;



    MainDXViewportView.DXScene.RenderingSteps.AddBefore(MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep, renderWireframeInstancesRenderingStep);





    // Update the DefaultRenderObjectsRenderingStep to prevent rendering ComplexGeometryRenderingQueue

    // This will render other objects normally.

    MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep.FilterRenderingQueuesFunction = queue => queue != MainDXViewportView.DXScene.ComplexGeometryRenderingQueue;





    // To render wireframe with solid color (without shading the lines) also set the "_instancedMeshGeometryVisual3D.IsSolidColorMaterial = true;" in the code below.

};

Code:

InstanceData[] allInstancesData = new InstanceData[1000];

// ... define allInstancesData ...



var worldTransform = new MatrixTransform3D();



var defaultWireBoxPositions = new List<Point3D>();

// ... define defaultWireBoxPositions ...



var allInstancedWireBoxesPositions = new Point3DCollection(allInstancesData.Length * defaultWireBoxPositions.Count); // presize the collection



for (var i = 0; i < allInstancesData.Length; i++)

{

    worldTransform.Matrix = allInstancesData[i].World.ToWpfMatrix3D();



    for (var j = 0; j < defaultWireBoxPositions.Count; j++)

    {

        var oneFinalPosition = worldTransform.Transform(defaultWireBoxPositions[j]);

        allInstancedWireBoxesPositions.Add(oneFinalPosition);

    }

}



var multiLineVisual = new MultiLineVisual3D()

{

    Positions = allInstancedWireBoxesPositions,

};