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Rectangular box with different picture on each face

I have a solution that works for my purposes. I'm including it here for future searchers.

I ended up extending BoxVisual3D. The texture coordinates, in the case of this particular Visual3D, each refer to a face of the cube. Those faces who receive an 'empty' set of 0,0 TextureCoordinates are uniform in color, based on the source image. I found this non-distracting enough to not try and solve.
The front and back face, in my example, receive a specific ordered set of texture points that cause the image to be displayed in the proper upright fashion for the user.
Note that creating a new point collection each time is not a good approach, as Tessellate() is called constantly.

The code is below.

class FaceBox : BoxVisual3D

{

protected override MeshGeometry3D Tessellate()

{

var qq = base.Tessellate();

var textureCoordinates = new PointCollection();

AddFourEmpty(textureCoordinates);

//Back face

AddFourBackFace(textureCoordinates);

//Front face

AddFourFrontFace(textureCoordinates);

AddFourEmpty(textureCoordinates);

qq.TextureCoordinates = textureCoordinates;

return qq;

}

private void AddFourEmpty(PointCollection textureCoordinates)

{

textureCoordinates.Add(new System.Windows.Point(0, 0));

}

private void AddFourBackFace(PointCollection textureCoordinates)

{

textureCoordinates.Add(new System.Windows.Point(1, 1));

textureCoordinates.Add(new System.Windows.Point(0, 1));

textureCoordinates.Add(new System.Windows.Point(0, 0));

textureCoordinates.Add(new System.Windows.Point(1, 0));

}

private void AddFourFrontFace(PointCollection textureCoordinates)

{

textureCoordinates.Add(new System.Windows.Point(0, 0));

textureCoordinates.Add(new System.Windows.Point(1, 0));

textureCoordinates.Add(new System.Windows.Point(1, 1));

textureCoordinates.Add(new System.Windows.Point(0, 1));

}

9 years ago

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