278 lines
8.8 KiB
Java
278 lines
8.8 KiB
Java
package electrosphere.renderer.meshgen;
|
|
|
|
import java.nio.FloatBuffer;
|
|
import java.nio.IntBuffer;
|
|
import java.util.LinkedList;
|
|
import java.util.List;
|
|
|
|
import org.joml.Vector2f;
|
|
import org.joml.Vector3f;
|
|
import org.lwjgl.BufferUtils;
|
|
|
|
import electrosphere.renderer.model.Mesh;
|
|
|
|
public class GeometryMeshGen {
|
|
|
|
/**
|
|
* Meshes a box
|
|
* @param verts The list of verts to store into
|
|
* @param normals The list of normals to store into
|
|
* @param uvs The list of uvs to store into
|
|
* @param indices The list of indices to store into
|
|
* @param width The width of the box
|
|
* @param height The height of the box
|
|
* @param depth THe depth of the box
|
|
*/
|
|
public static Mesh genBox(float width, float height, float depth){
|
|
Mesh mesh = new Mesh("box");
|
|
mesh.generateVAO();
|
|
List<Vector3f> verts = new LinkedList<Vector3f>();
|
|
List<Vector3f> normals = new LinkedList<Vector3f>();
|
|
List<Vector2f> uvs = new LinkedList<Vector2f>();
|
|
List<Integer> indices = new LinkedList<Integer>();
|
|
//
|
|
//face 1
|
|
//
|
|
|
|
//verts
|
|
verts.add(new Vector3f(0, 0, 0));
|
|
verts.add(new Vector3f(0 + width, 0, 0));
|
|
verts.add(new Vector3f(0, 0 + height, 0));
|
|
verts.add(new Vector3f(0 + width, 0 + height, 0));
|
|
//indices
|
|
indices.add(0);
|
|
indices.add(2);
|
|
indices.add(3);
|
|
indices.add(0);
|
|
indices.add(3);
|
|
indices.add(1);
|
|
//normals
|
|
normals.add(new Vector3f(0,0,-1));
|
|
normals.add(new Vector3f(0,0,-1));
|
|
normals.add(new Vector3f(0,0,-1));
|
|
normals.add(new Vector3f(0,0,-1));
|
|
//uvs
|
|
uvs.add(new Vector2f( 0, 0));
|
|
uvs.add(new Vector2f(width, 0));
|
|
uvs.add(new Vector2f( 0, height));
|
|
uvs.add(new Vector2f(width, height));
|
|
|
|
//
|
|
//face 2
|
|
//
|
|
|
|
//verts
|
|
verts.add(new Vector3f(0, 0, 0 ));
|
|
verts.add(new Vector3f(0, 0, 0 + depth));
|
|
verts.add(new Vector3f(0, 0 + height, 0 ));
|
|
verts.add(new Vector3f(0, 0 + height, 0 + depth));
|
|
//indices
|
|
indices.add(4);
|
|
indices.add(7);
|
|
indices.add(6);
|
|
indices.add(4);
|
|
indices.add(5);
|
|
indices.add(7);
|
|
//normals
|
|
normals.add(new Vector3f(-1,0,0));
|
|
normals.add(new Vector3f(-1,0,0));
|
|
normals.add(new Vector3f(-1,0,0));
|
|
normals.add(new Vector3f(-1,0,0));
|
|
//uvs
|
|
uvs.add(new Vector2f( 0, 0));
|
|
uvs.add(new Vector2f(depth, 0));
|
|
uvs.add(new Vector2f( 0, height));
|
|
uvs.add(new Vector2f(depth, height));
|
|
|
|
//
|
|
//face 3
|
|
//
|
|
|
|
//verts
|
|
verts.add(new Vector3f(0, 0, 0 ));
|
|
verts.add(new Vector3f(0, 0, 0 + depth));
|
|
verts.add(new Vector3f(0 + width, 0, 0 ));
|
|
verts.add(new Vector3f(0 + width, 0, 0 + depth));
|
|
//indices
|
|
indices.add( 8);
|
|
indices.add(10);
|
|
indices.add(11);
|
|
indices.add( 9);
|
|
indices.add( 8);
|
|
indices.add(11);
|
|
//normals
|
|
normals.add(new Vector3f(0,-1,0));
|
|
normals.add(new Vector3f(0,-1,0));
|
|
normals.add(new Vector3f(0,-1,0));
|
|
normals.add(new Vector3f(0,-1,0));
|
|
//uvs
|
|
uvs.add(new Vector2f( 0, 0));
|
|
uvs.add(new Vector2f(depth, 0));
|
|
uvs.add(new Vector2f( 0, width));
|
|
uvs.add(new Vector2f(depth, width));
|
|
|
|
//
|
|
//face 4
|
|
//
|
|
|
|
//verts
|
|
verts.add(new Vector3f(0, 0, 0 + depth));
|
|
verts.add(new Vector3f(0 + width, 0, 0 + depth));
|
|
verts.add(new Vector3f(0, 0 + height, 0 + depth));
|
|
verts.add(new Vector3f(0 + width, 0 + height, 0 + depth));
|
|
//indices
|
|
indices.add(12);
|
|
indices.add(15);
|
|
indices.add(14);
|
|
indices.add(12);
|
|
indices.add(13);
|
|
indices.add(15);
|
|
//normals
|
|
normals.add(new Vector3f(0,0,1));
|
|
normals.add(new Vector3f(0,0,1));
|
|
normals.add(new Vector3f(0,0,1));
|
|
normals.add(new Vector3f(0,0,1));
|
|
//uvs
|
|
uvs.add(new Vector2f( 0, 0));
|
|
uvs.add(new Vector2f(width, 0));
|
|
uvs.add(new Vector2f( 0, height));
|
|
uvs.add(new Vector2f(width, height));
|
|
|
|
|
|
//
|
|
//face 5
|
|
//
|
|
|
|
//verts
|
|
verts.add(new Vector3f(0 + width, 0, 0 ));
|
|
verts.add(new Vector3f(0 + width, 0, 0 + depth));
|
|
verts.add(new Vector3f(0 + width, 0 + height, 0 ));
|
|
verts.add(new Vector3f(0 + width, 0 + height, 0 + depth));
|
|
//indices
|
|
indices.add(16);
|
|
indices.add(18);
|
|
indices.add(19);
|
|
indices.add(16);
|
|
indices.add(19);
|
|
indices.add(17);
|
|
//normals
|
|
normals.add(new Vector3f(1,0,0));
|
|
normals.add(new Vector3f(1,0,0));
|
|
normals.add(new Vector3f(1,0,0));
|
|
normals.add(new Vector3f(1,0,0));
|
|
//uvs
|
|
uvs.add(new Vector2f( 0, 0));
|
|
uvs.add(new Vector2f(depth, 0));
|
|
uvs.add(new Vector2f( 0, height));
|
|
uvs.add(new Vector2f(depth, height));
|
|
|
|
|
|
//
|
|
//face 6
|
|
//
|
|
|
|
//verts
|
|
verts.add(new Vector3f(0, 0 + height, 0 ));
|
|
verts.add(new Vector3f(0, 0 + height, 0 + depth));
|
|
verts.add(new Vector3f(0 + width, 0 + height, 0 ));
|
|
verts.add(new Vector3f(0 + width, 0 + height, 0 + depth));
|
|
//indices
|
|
indices.add(20);
|
|
indices.add(23);
|
|
indices.add(22);
|
|
indices.add(20);
|
|
indices.add(21);
|
|
indices.add(23);
|
|
//normals
|
|
normals.add(new Vector3f(0,1,0));
|
|
normals.add(new Vector3f(0,1,0));
|
|
normals.add(new Vector3f(0,1,0));
|
|
normals.add(new Vector3f(0,1,0));
|
|
//uvs
|
|
uvs.add(new Vector2f( 0, 0));
|
|
uvs.add(new Vector2f(depth, 0));
|
|
uvs.add(new Vector2f( 0, width));
|
|
uvs.add(new Vector2f(depth, width));
|
|
|
|
|
|
|
|
//store into arrays
|
|
FloatBuffer vertBuffer;
|
|
FloatBuffer normalBuffer;
|
|
FloatBuffer uvBuffer;
|
|
IntBuffer faceBuffer;
|
|
//verts
|
|
float[] vertices = new float[verts.size() * 3];
|
|
for(int i = 0; i < verts.size(); i++){
|
|
Vector3f currentVert = verts.get(i);
|
|
vertices[3 * i + 0] = currentVert.x;
|
|
vertices[3 * i + 1] = currentVert.y;
|
|
vertices[3 * i + 2] = currentVert.z;
|
|
}
|
|
vertBuffer = BufferUtils.createFloatBuffer(vertices.length);
|
|
vertBuffer.put(vertices);
|
|
|
|
//faces
|
|
int[] faceElements = new int[indices.size()];
|
|
for(int i = 0; i < indices.size(); i++){
|
|
faceElements[i] = indices.get(i);
|
|
}
|
|
faceBuffer = BufferUtils.createIntBuffer(faceElements.length);
|
|
faceBuffer.put(faceElements);
|
|
|
|
//normals
|
|
float[] normalsArr = new float[normals.size() * 3];
|
|
for(int i = 0; i < normals.size(); i++){
|
|
Vector3f currentNormal = normals.get(i);
|
|
normalsArr[3 * i + 0] = currentNormal.x;
|
|
normalsArr[3 * i + 1] = currentNormal.y;
|
|
normalsArr[3 * i + 2] = currentNormal.z;
|
|
}
|
|
normalBuffer = BufferUtils.createFloatBuffer(normalsArr.length);
|
|
normalBuffer.put(normalsArr);
|
|
|
|
//uvs
|
|
float[] uvsArr = new float[uvs.size() * 2];
|
|
for(int i = 0; i < uvs.size(); i++){
|
|
Vector2f currentUV = uvs.get(i);
|
|
uvsArr[2 * i + 0] = currentUV.x;
|
|
uvsArr[2 * i + 1] = currentUV.y;
|
|
}
|
|
uvBuffer = BufferUtils.createFloatBuffer(uvsArr.length);
|
|
uvBuffer.put(uvsArr);
|
|
|
|
|
|
|
|
|
|
//actually store in mesh
|
|
int elementCount = faceElements.length;
|
|
try {
|
|
//actually buffer vertices
|
|
if(vertBuffer.position() > 0){
|
|
vertBuffer.flip();
|
|
mesh.bufferVertices(vertBuffer, 3);
|
|
}
|
|
//actually buffer normals
|
|
if(normalBuffer != null && normalBuffer.position() > 0){
|
|
normalBuffer.flip();
|
|
mesh.bufferNormals(normalBuffer, 3);
|
|
}
|
|
//actually buffer UVs
|
|
if(uvBuffer != null && uvBuffer.position() > 0){
|
|
uvBuffer.flip();
|
|
mesh.bufferTextureCoords(uvBuffer, 2);
|
|
}
|
|
//buffer element indices
|
|
if(faceBuffer.position() > 0){
|
|
faceBuffer.flip();
|
|
mesh.bufferFaces(faceBuffer, elementCount);
|
|
}
|
|
} catch (NullPointerException ex){
|
|
ex.printStackTrace();
|
|
}
|
|
|
|
return mesh;
|
|
}
|
|
|
|
}
|