Lighting.j3md issues on custom Mesh

Troubleshooting graphics
1

Hi there,



i have created and custom Mesh and have used the “unshaded” mode for the texture, now i want to use the “Lighting.j3md”.

I have used the “Lighting.j3md” for other meshes withouf problems, but if i do it on my Mesh the Texture only appears if im near to it.

Can you help me?



thank you

2

your mesh has wrong index order or wrong normals.



[java]

result.indexArray = new short[mesh.indexArray.length];

for (int i = 0; i < mesh.indexArray.length; i += 3)

{

result.indexArray = mesh.indexArray;

result.indexArray = mesh.indexArray;

result.indexArray = mesh.indexArray;

}

[/java]

1 Like
3

i have allready tried to change the order of the indexes, but this has no effect. What do you mean with “wrong normals”?



thanks :slight_smile:

4

use this to visualize your normals.

[java]public static Node createDebugNormals(Mesh mesh, Material mat)

{

Node debugNormals = new Node();



VertexBuffer vertex = mesh.getBuffer(Type.Position);

float[] vertexArray = BufferUtils.getFloatArray((FloatBuffer) vertex.getData());



VertexBuffer normals = mesh.getBuffer(Type.Normal);

float[] normalArray = BufferUtils.getFloatArray((FloatBuffer) normals.getData());



for (int i = 0; i < vertexArray.length; i += 3)

{

Vector3f p1 = new Vector3f(vertexArray, vertexArray, vertexArray);

Vector3f n1 = new Vector3f(normalArray, normalArray, normalArray);



debugNormals.attachChild(createLine("DebugShowNormalsLine", mat, p1, p1.add(n1.mult(0.1f))));

}



GeometryBatchFactory.optimize(debugNormals);

return debugNormals;

}



public static Geometry createLine(Material mat, Vector3f startPosition, Vector3f endPosition)

{

return createLine("Line", mat, startPosition, endPosition);

}



public static Geometry createLine(String name, Material mat, Vector3f startPosition, Vector3f endPosition)

{

Line line = new Line(startPosition, endPosition);

Geometry lineGeom = new Geometry(name, line);

lineGeom.setMaterial(mat);

return lineGeom;

}



[/java]

1 Like
5

thanks a lot, it seems to be caused by the wrong normals.