001 /* 002 * TriangleFilter 003 * 004 * Copyright (c) 2002 Marco Schmidt. 005 * All rights reserved. 006 */ 007 008 package net.sourceforge.jiu.geometry; 009 010 /** 011 * A triangle filter (also known as linear or bilinear filter). 012 * @author Marco Schmidt 013 * @since 0.10.0 014 */ 015 public class TriangleFilter extends ResampleFilter 016 { 017 public float apply(float value) 018 { 019 if (value < 0.0f) 020 { 021 value = -value; 022 } 023 if (value < 1.0f) 024 { 025 return 1.0f - value; 026 } 027 else 028 { 029 return 0.0f; 030 } 031 } 032 033 public String getName() 034 { 035 return "Triangle (bilinear)"; 036 } 037 038 public float getRecommendedSamplingRadius() 039 { 040 return 1.0f; 041 } 042 }