00001 //------------------------------------------------------------------------------ 00002 // Lamp : Open source game middleware 00003 // Copyright (C) 2004 Junpei Ohtani ( Email : junpee@users.sourceforge.jp ) 00004 // 00005 // This library is free software; you can redistribute it and/or 00006 // modify it under the terms of the GNU Lesser General Public 00007 // License as published by the Free Software Foundation; either 00008 // version 2.1 of the License, or (at your option) any later version. 00009 // 00010 // This library is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 // Lesser General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public 00016 // License along with this library; if not, write to the Free Software 00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 //------------------------------------------------------------------------------ 00019 00020 /** @file 00021 * カプセル交差実装 00022 * @author Junpee 00023 */ 00024 00025 #include "LampBasic.h" 00026 #include "Geometry/Intersection/CapsuleIntersection.h" 00027 00028 #include "Geometry/Primitive/Capsule.h" 00029 00030 namespace Lamp{ 00031 00032 //------------------------------------------------------------------------------ 00033 // 点 00034 //------------------------------------------------------------------------------ 00035 // 点交差 00036 bool CapsuleIntersection::intersect( 00037 const Capsule& capsule, const Vector3& point){ 00038 // セグメントと点との距離から求める 00039 const Vector3& direction = capsule.getDirection(); 00040 float radius = capsule.getRadius(); 00041 Vector3 distance = point - capsule.getOrigin(); 00042 float t = distance.dotProduct(direction); 00043 // tが-だったら投影しない 00044 if(t > 0.f){ 00045 float squaredLength = direction.getSquaredLength(); 00046 if(t >= squaredLength){ 00047 // tが方向を超えていた場合はターゲット位置からの距離 00048 // t = 1.f; 00049 distance -= direction; 00050 }else{ 00051 t /= squaredLength; 00052 distance -= t * direction; 00053 } 00054 } 00055 // 接触点はorigin + direction * t + distance 00056 // 途中で接触点を求めていったほうがいい。distance使いまわしてる 00057 return distance.getSquaredLength() <= (radius * radius); 00058 } 00059 //------------------------------------------------------------------------------ 00060 // カプセル 00061 //------------------------------------------------------------------------------ 00062 // カプセル交差 00063 bool CapsuleIntersection::intersect( 00064 const Capsule& capsule0, const Capsule& capsule1){ 00065 Assert(false); 00066 return false; 00067 } 00068 //------------------------------------------------------------------------------ 00069 // コーン 00070 //------------------------------------------------------------------------------ 00071 // コーン交差 00072 bool CapsuleIntersection::intersect(const Capsule& capsule, const Cone& cone){ 00073 Assert(false); 00074 return false; 00075 } 00076 //------------------------------------------------------------------------------ 00077 // ライン 00078 //------------------------------------------------------------------------------ 00079 // ライン交差 00080 bool CapsuleIntersection::intersect(const Capsule& capsule, const Line& line){ 00081 Assert(false); 00082 return false; 00083 } 00084 //------------------------------------------------------------------------------ 00085 // 指向性ボックス 00086 //------------------------------------------------------------------------------ 00087 // 指向性ボックス交差 00088 bool CapsuleIntersection::intersect( 00089 const Capsule& capsule, const OrientedBox& ob){ 00090 Assert(false); 00091 return false; 00092 } 00093 //------------------------------------------------------------------------------ 00094 // 平面 00095 //------------------------------------------------------------------------------ 00096 // 平面交差 00097 bool CapsuleIntersection::intersect(const Capsule& capsule, const Plane& plane){ 00098 Assert(false); 00099 return false; 00100 } 00101 //------------------------------------------------------------------------------ 00102 // レイ 00103 //------------------------------------------------------------------------------ 00104 // レイ交差 00105 bool CapsuleIntersection::intersect(const Capsule& capsule, const Ray& ray){ 00106 Assert(false); 00107 return false; 00108 } 00109 //------------------------------------------------------------------------------ 00110 // セグメント 00111 //------------------------------------------------------------------------------ 00112 // セグメント交差 00113 bool CapsuleIntersection::intersect( 00114 const Capsule& capsule, const Segment& segment){ 00115 Assert(false); 00116 return false; 00117 } 00118 //------------------------------------------------------------------------------ 00119 // 球 00120 //------------------------------------------------------------------------------ 00121 // 球交差 00122 bool CapsuleIntersection::intersect( 00123 const Capsule& capsule, const Sphere& sphere){ 00124 Assert(false); 00125 return false; 00126 } 00127 //------------------------------------------------------------------------------ 00128 // 三角 00129 //------------------------------------------------------------------------------ 00130 // 三角交差 00131 bool CapsuleIntersection::intersect( 00132 const Capsule& capsule, const Triangle& triangle){ 00133 Assert(false); 00134 return false; 00135 } 00136 //------------------------------------------------------------------------------ 00137 } // End of namespace Lamp 00138 //------------------------------------------------------------------------------