root/as3/FLARToolKit/trunk/libs/Papervision3D/src/org/papervision3d/core/math/util/InterpolationUtil.as

package org.papervision3d.core.math.util
{
        import org.papervision3d.core.geom.renderables.Vertex3D;
        import org.papervision3d.core.math.NumberUV;
        
        public class InterpolationUtil
        {
                public static function interpolatePoint( a:Vertex3D, b:Vertex3D, alpha:Number ):Vertex3D
                {
                        var dst:Vertex3D = new Vertex3D();
                        dst.x = a.x + alpha * (b.x - a.x);
                        dst.y = a.y + alpha * (b.y - a.y);
                        dst.z = a.z + alpha * (b.z - a.z);
                        return dst;
                }
                
                public static function interpolatePointTo(a:Vertex3D, b:Vertex3D, alpha:Number, dst:Vertex3D):void
                {
                        dst.x = a.x + alpha * (b.x - a.x);
                        dst.y = a.y + alpha * (b.y - a.y);
                        dst.z = a.z + alpha * (b.z - a.z);
                }
                
                public static function interpolateUV( a:NumberUV, b:NumberUV, alpha:Number ):NumberUV
                {
                        var dst:NumberUV = new NumberUV();
                        dst.u = a.u + alpha * (b.u - a.u);
                        dst.v = a.v + alpha * (b.v - a.v);
                        return dst;
                }
                
                public static function interpolateUVTo( a:NumberUV, b:NumberUV, alpha:Number, dst:NumberUV):NumberUV
                {
                        dst.u = a.u + alpha * (b.u - a.u);
                        dst.v = a.v + alpha * (b.v - a.v);
                        return dst;
                }
                
        }
}