Need help with Shape3D.SORT_CUSTOM_BSP

[echeese]

Hi there, I'm working on a game and I'd like to use BSP sorting. I already have everything all cut up for the bsp tree and so I was wondering how I can implement it. i've set the sortingMode and added the root to the shape, and i'm getting this error:

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1.  
2. TypeError: Error #1009: Cannot access a property or method of a null object reference.
3.     at sandy.core::Renderer/render()[/sandy/core/Renderer.hx:200]
4.     at sandy.core::Scene3D/render()[/sandy/core/Scene3D.hx:150]
5.     at Main$/main()[/src/Main.hx:39]
6.     at MethodInfo-352()[<null>:1]
7.     at flash::Boot()[/haxe/std/flash9/Boot.hx:86]
8.  

[makc]

...on the 2nd thought, if you say

added the root to the shape

I have no idea maybe leave a sample?

[echeese]

This is what I have so far.

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1. //haXe
2.         var scene:Scene3D = new Scene3D( "myScene", Lib.current, new Camera3D( 550, 400 ), new Group("root") );
3.         var level:Shape3D = new Shape3D("level");
4.         level.sortingMode = Shape3D.SORT_CUSTOM_BSP;
5.         level.bsp = new BSPNode();
6.         level.bsp.plane = new Plane(1, 0, 0, 0);
7.         level.bsp.positive = new BSPNode();
8.         var box:Box = new Box();
9.         level.bsp.positive.faces = box.aPolygons;
10.         scene.root.addChild(level);
11.         scene.render();

[makc]

right, positive was node, not array of it :/ I forgot, ha ha. ok, I will make box-based example.

[echeese]

That would be great. Any ideas of where I went wrong? Or has this feature not ready? I'm not using the SVN build btw, but the haXe 3.1.2 version.

[makc]

haxe trunk *IS* 3.1.2 or, actually, *WAS* because I committed getPlane() minutes ago. Any way, here goes your example.

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1. // CustomBSPExample.hx
2. package ;
3. import flash.display.Sprite;
4. import sandy.core.data.BSPNode;
5. import sandy.core.Scene3D;
6. import sandy.core.scenegraph.Camera3D;
7. import sandy.core.scenegraph.Group;
8. import sandy.core.scenegraph.Shape3D;
9. import sandy.primitive.Box;
10.  
11. class CustomBSPExample extends Sprite {
12.  
13.     private var box:Box;
14.     private var scene:Scene3D;
15.     public function new () {
16.         super ();
17.  
18.         scene = new Scene3D ("scene", this, new Camera3D (), new Group ("root"));
19.         box = new Box ("box", 10, 10, 10, "quad"); scene.root.addChild (box);
20.         box.rotateX = 123; box.rotateY = 45; box.rotateZ = 67;
21.         box.sortingMode = Shape3D.SORT_CUSTOM_BSP;
22.  
23.         // box is actually convex shape, so we can cut it in any order
24.         box.bsp = new BSPNode ();
25.         box.bsp.plane = box.aPolygons [0].getPlane ();
26.         box.bsp.faces = [ box.aPolygons [0] ];
27.  
28.         // any face is behind any other faces
29.         // I think this means being in negative subspace
30.         box.bsp.negative = new BSPNode ();
31.         box.bsp.negative.plane = box.aPolygons [4].getPlane ();
32.         box.bsp.negative.faces = [ box.aPolygons [4] ];
33.  
34.         box.bsp.negative.negative = new BSPNode ();
35.         box.bsp.negative.negative.plane = box.aPolygons [5].getPlane ();
36.         box.bsp.negative.negative.faces = [ box.aPolygons [5] ];
37.  
38.         box.bsp.negative.negative.negative = new BSPNode ();
39.         box.bsp.negative.negative.negative.plane = box.aPolygons [3].getPlane ();
40.         box.bsp.negative.negative.negative.faces = [ box.aPolygons [3] ];
41.  
42.         box.bsp.negative.negative.negative.negative = new BSPNode ();
43.         box.bsp.negative.negative.negative.negative.plane = box.aPolygons [1].getPlane ();
44.         box.bsp.negative.negative.negative.negative.faces = [ box.aPolygons [1] ];
45.  
46.         box.bsp.negative.negative.negative.negative.negative = new BSPNode ();
47.         box.bsp.negative.negative.negative.negative.negative.plane = box.aPolygons [2].getPlane ();
48.         box.bsp.negative.negative.negative.negative.negative.faces = [ box.aPolygons [2] ];
49.  
50.         // render
51.         scene.camera.z = -123;
52.         addEventListener ("enterFrame", loop);
53.     }
54.  
55.     private function loop (e):Void {
56.         // some motion
57.         box.rotateX += 1;
58.         box.rotateY = box.rotateX * box.rotateZ / 360;
59.         box.rotateZ += 2;
60.  
61.         scene.render();
62.     }
63.    
64.     public static function main () {
65.         flash.Lib.current.addChild (new CustomBSPExample ());
66.     }
67. }

[echeese]

Am I mistaken or am I only able to use one texture for the entire bsp level?

[makc]

you can set textures to each polygon individually.