topical media & game development
mobile-query-three-vendor-three.js-modifiers-ExplodeModifier.js / js
Make all faces use unique vertices
so that each face can be separated from others
author: alteredq / alteredqualia.com/
THREE.ExplodeModifier = function () {
};
THREE.ExplodeModifier.prototype.modify = function ( geometry ) {
var vertices = [];
for ( var i = 0, il = geometry.faces.length; i < il; i ++ ) {
var n = vertices.length;
var face = geometry.faces[ i ];
if ( face instanceof THREE.Face4 ) {
var a = face.a;
var b = face.b;
var c = face.c;
var d = face.d;
var va = geometry.vertices[ a ];
var vb = geometry.vertices[ b ];
var vc = geometry.vertices[ c ];
var vd = geometry.vertices[ d ];
vertices.push( va.clone() );
vertices.push( vb.clone() );
vertices.push( vc.clone() );
vertices.push( vd.clone() );
face.a = n;
face.b = n + 1;
face.c = n + 2;
face.d = n + 3;
} else {
var a = face.a;
var b = face.b;
var c = face.c;
var va = geometry.vertices[ a ];
var vb = geometry.vertices[ b ];
var vc = geometry.vertices[ c ];
vertices.push( va.clone() );
vertices.push( vb.clone() );
vertices.push( vc.clone() );
face.a = n;
face.b = n + 1;
face.c = n + 2;
}
}
geometry.vertices = vertices;
delete geometry.__tmpVertices;
}
(C) Æliens
04/09/2009
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