/** Process and setup the <code>TextureState</code> and texture UV buffer. */
private void processTexture() {
FloatBuffer textureBuffer = BufferUtils.createVector2Buffer(this.vertices.length);
float maxU = 1;
float maxV = 1;
float minU = 0;
float minV = 0;
int index = 0;
for (IVertex vertex : this.vertices) {
BufferUtils.setInBuffer(vertex.getTextureCoords(), textureBuffer, index);
if (vertex.getTextureCoords().x > maxU) maxU = vertex.getTextureCoords().x;
else if (vertex.getTextureCoords().x < minU) minU = vertex.getTextureCoords().x;
if (vertex.getTextureCoords().y > maxV) maxV = vertex.getTextureCoords().y;
else if (vertex.getTextureCoords().y < minV) minV = vertex.getTextureCoords().y;
index++;
}
this.setTextureCoords(new TexCoords(textureBuffer));
// Get texture state.
TextureState state = (TextureState) this.getRenderState(StateType.Texture);
if (state == null) {
state = DisplaySystem.getDisplaySystem().getRenderer().createTextureState();
this.setRenderState(state);
}
// Set color map.
if (this.color != null) state.setTexture(this.loadTexture(this.color, maxU, maxV), 0);
// Set normal map.
if (this.normal != null) state.setTexture(this.loadTexture(this.normal, maxU, maxV), 1);
// Set specular map.
if (this.specular != null) state.setTexture(this.loadTexture(this.specular, maxU, maxV), 2);
}
/** Average normals for vertices with same position. */
private void averageNormal() {
this.tempVertices.clear();
for (int i = 0; i < this.vertices.length; i++) {
final IVertex v1 = this.vertices[i];
this.tempVertices.add(v1);
// Find all vertices with same position.
for (int j = 0; j < this.vertices.length; j++) {
final IVertex v2 = this.vertices[j];
if (v1 != v2 && v2.getPosition().equals(v1.getPosition())) {
this.tempVertices.add(v2);
}
}
// Average vertices in list.
float x = 0;
float y = 0;
float z = 0;
for (IVertex vertex : this.tempVertices) {
x += vertex.getNormal().getX();
y += vertex.getNormal().getY();
z += vertex.getNormal().getZ();
}
final int size = this.tempVertices.size();
x = x / size;
y = y / size;
z = z / size;
final Vector3f sharedNormal = new Vector3f(x, y, z);
sharedNormal.normalizeLocal();
for (IVertex vertex : this.tempVertices) {
vertex.setNormalReference(sharedNormal);
}
// Clear out this group.
this.tempVertices.clear();
}
}