package jray.model;
import java.util.Arrays;
import jray.common.Sphere;
import jray.common.Vect3;
import jray.math.Vect;
import jray.struct.Octree;
public class TriangleMeshModel {
private MinimalTriangle[] triangles;
private Sphere bounds;
private Octree tree;
/**
* 3xnormal
* 3x v1
* 3x v2
* 3x v3
*
* @param triangleEdgeData
*/
public TriangleMeshModel(float[] triangleEdgeData){
int triangleCount = triangleEdgeData.length/12;
triangles = new MinimalTriangle[triangleCount];
for(int i=0;i<triangleCount;i++)
triangles[i] = new MinimalTriangle(new Vect3(triangleEdgeData[i*12+0],triangleEdgeData[i*12+1],triangleEdgeData[i*12+2]),
new Vect3(triangleEdgeData[i*12+3],triangleEdgeData[i*12+4],triangleEdgeData[i*12+5]),
new Vect3(triangleEdgeData[i*12+6],triangleEdgeData[i*12+7],triangleEdgeData[i*12+8]),
new Vect3(triangleEdgeData[i*12+9],triangleEdgeData[i*12+10],triangleEdgeData[i*12+11]));
Vect3 max = new Vect3(Double.NEGATIVE_INFINITY,Double.NEGATIVE_INFINITY,Double.NEGATIVE_INFINITY);
Vect3 min = new Vect3(Double.POSITIVE_INFINITY,Double.POSITIVE_INFINITY,Double.POSITIVE_INFINITY);
for(MinimalTriangle m : triangles){
Vect3 p = m.getBoundingSphere().getPosition();
if(p.data[0]>max.data[0]) max.data[0] = p.data[0];
if(p.data[1]>max.data[1]) max.data[1] = p.data[1];
if(p.data[2]>max.data[2]) max.data[2] = p.data[2];
if(p.data[0]<min.data[0]) min.data[0] = p.data[0];
if(p.data[1]<min.data[1]) min.data[1] = p.data[1];
if(p.data[2]<min.data[2]) min.data[2] = p.data[2];
}
max.data[0] = (max.data[0]+min.data[0])/2;
max.data[1] = (max.data[1]+min.data[1])/2;
max.data[2] = (max.data[2]+min.data[2])/2;
double radius = 0;
for(MinimalTriangle m : triangles){
Vect3 p = m.getBoundingSphere().getPosition();
Vect.subtract(p, max, min);
double dist = m.getBoundingSphereRadius() + min.length();
if(dist > radius){
radius = dist;
}
}
bounds = new Sphere(max, radius, 0xFF000000);
tree = Octree.buildTree(bounds.getPosition(), Arrays.asList(triangles));
for(MinimalTriangle m : triangles)
m.purge();
}
public Sphere getBoundingSphere(){
return bounds;
}
public Octree getTree() {
return tree;
}
}