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add a bounding volume to TileChunkMesh and check this against the frustum when rendering

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This is to ensure that we still render chunks when they contain tile
meshes which may be bigger then the 1x1x1 unit size and could then
potentially cause the chunk mesh bounds to be larger then the chunk
tile grid bounds.
This commit is contained in:
Gered 2013-07-16 18:35:06 -04:00
parent 211a76dfc2
commit 8b2c7452fa
3 changed files with 21 additions and 11 deletions
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6
src/com/blarg/gdx/tilemap3d/ChunkVertexGenerator.java
View file

@ -145,10 +145,8 @@ public class ChunkVertexGenerator {
}
}
chunk.mesh.mesh = builder.end();
chunk.mesh.meshPartSize = chunk.mesh.mesh.getNumVertices();
chunk.alphaMesh.mesh = alphaBuilder.end();
chunk.alphaMesh.meshPartSize = chunk.alphaMesh.mesh.getNumVertices();
chunk.mesh.setMesh(builder.end());
chunk.alphaMesh.setMesh(alphaBuilder.end());
}
private void addMesh(MeshBuilder builder, TileMesh sourceMesh, TileChunk chunk, TileCoord position, Matrix4 transform, Color color, int firstVertex, int numVertices) {

15
src/com/blarg/gdx/tilemap3d/TileChunkMesh.java
View file

@ -1,13 +1,17 @@
package com.blarg.gdx.tilemap3d;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Mesh;
import com.badlogic.gdx.graphics.g3d.Renderable;
import com.badlogic.gdx.graphics.g3d.materials.Material;
import com.badlogic.gdx.graphics.g3d.materials.TextureAttribute;
import com.badlogic.gdx.math.collision.BoundingBox;
import com.badlogic.gdx.utils.Disposable;
import com.blarg.gdx.graphics.TextureAtlas;
public class TileChunkMesh extends Renderable implements Disposable {
public final BoundingBox bounds;
public TileChunkMesh(TileChunk chunk) {
meshPartOffset = 0;
meshPartSize = 0;
@ -19,6 +23,17 @@ public class TileChunkMesh extends Renderable implements Disposable {
TextureAtlas tileMapAtlas = chunk.tileMap.tileMeshes.atlas;
material = new Material(TextureAttribute.createDiffuse(tileMapAtlas.texture));
bounds = new BoundingBox();
}
public void setMesh(Mesh mesh) {
this.mesh = mesh;
this.meshPartSize = mesh.getNumVertices();
if (this.meshPartSize > 0)
mesh.calculateBoundingBox(bounds);
else
bounds.clr();
}
@Override

11
src/com/blarg/gdx/tilemap3d/TileMapRenderer.java
View file

@ -12,13 +12,10 @@ public class TileMapRenderer {
for (int x = 0; x < tileMap.widthInChunks; ++x)
{
TileChunk chunk = tileMap.getChunk(x, y, z);
if (camera.frustum.boundsInFrustum(chunk.getBounds()))
{
if (chunk.mesh.mesh.getNumVertices() > 0)
modelBatch.render(chunk.mesh);
if (chunk.alphaMesh.mesh.getNumVertices() > 0)
modelBatch.render(chunk.alphaMesh);
}
if (chunk.mesh.mesh.getNumVertices() > 0 && camera.frustum.boundsInFrustum(chunk.mesh.bounds))
modelBatch.render(chunk.mesh);
if (chunk.alphaMesh.mesh.getNumVertices() > 0 && camera.frustum.boundsInFrustum(chunk.alphaMesh.bounds))
modelBatch.render(chunk.alphaMesh);
}
}
}