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# VectorArrayInterpolator.cpp

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    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  * ベクトル配列補間実装
    00022  * @author Junpee
    00023  */
    00024
    00025 #include "LampBasic.h"
    00026 #include "Animation/VectorInterpolator/VectorArrayInterpolator.h"
    00027
    00028 namespace Lamp{
    00029
    00030 //------------------------------------------------------------------------------
    00031 // コンストラクタ
    00032 VectorArrayInterpolator::VectorArrayInterpolator() :
    00033     array_(NULL), size_(0), length_(0.f){
    00034 }
    00035 //------------------------------------------------------------------------------
    00036 // デストラクタ
    00037 VectorArrayInterpolator::~VectorArrayInterpolator(){
    00038     SafeArrayDelete(array_);
    00039 }
    00040 //------------------------------------------------------------------------------
    00041 // コピーコンストラクタ
    00042 VectorArrayInterpolator::VectorArrayInterpolator(
    00043     const VectorArrayInterpolator& copy){
    00044     size_ = copy.size_;
    00045     length_ = copy.length_;
    00046     // コピーコンストラクタは強制的にNULL設定
    00047     array_ = NULL;
    00048     if(size_ == 0){ return; }
    00049     array_ = new Vector3[size_];
    00050     std::memcpy(array_, copy.array_, sizeof(Vector3) * size_);
    00051 }
    00052 //------------------------------------------------------------------------------
    00053 // 代入演算子
    00054 VectorArrayInterpolator& VectorArrayInterpolator::operator =(
    00055     const VectorArrayInterpolator& copy){
    00056     // 自分自身ならリターン
    00057     if(this == &copy){ return *this; }
    00058     size_ = copy.size_;
    00059     length_ = copy.length_;
    00060     // 代入の際は解放してNULLを設定
    00061     SafeArrayDelete(array_);
    00062     if(size_ == 0){ return *this; }
    00063     array_ = new Vector3[size_];
    00064     std::memcpy(array_, copy.array_, sizeof(Vector3) * size_);
    00065     return *this;
    00066 }
    00067 //------------------------------------------------------------------------------
    00068 // バウンディング
    00069 //------------------------------------------------------------------------------
    00070 // バウンディングボックスの取得
    00071 AxisAlignedBox VectorArrayInterpolator::getBoundingBox() const{
    00072     AxisAlignedBox result(AxisAlignedBox::zero);
    00073     if(size_ == 0){ return result; }
    00074     result.set(array_[0], array_[0]);
    00075     for(int i = 1; i < size_; i++){ result.merge(array_[i]); }
    00076     return result;
    00077 }
    00078 //------------------------------------------------------------------------------
    00079 // 補間
    00080 //------------------------------------------------------------------------------
    00081 // 補間
    00082 Vector3 VectorArrayInterpolator::interpolate(float time){
    00083     Assert(array_ != NULL);
    00084     // 時間が前にあふれている
    00085     if(time <= 0.f){ return array_[0]; }
    00086     // 時間が後ろにあふれている
    00087     if(time >= length_){ return array_[size_ - 1]; }
    00088     // 線形補間
    00089     float integer, rate;
    00090     rate = Math::modf(time, &integer);
    00091     int index = (int)integer;
    00092     Vector3 preValue = array_[index];
    00093     preValue *= (1.f - rate);
    00094     Vector3 postValue = array_[index + 1];
    00095     postValue *= rate;
    00096     preValue += postValue;
    00097     return preValue;
    00098 }
    00099 //------------------------------------------------------------------------------
    00100 // 値
    00101 //------------------------------------------------------------------------------
    00102 // サイズ設定
    00103 void VectorArrayInterpolator::setSize(int size){
    00104     // 補間の為には2以上のsizeが必要
    00105     Assert(size > 1);
    00106     size_ = size;
    00107     length_ = (float)(size_ - 1);
    00108     SafeArrayDelete(array_);
    00109     array_ = new Vector3[size_];
    00110 }
    00111 //------------------------------------------------------------------------------
    00112 } // End of namespace Lamp
    00113 //------------------------------------------------------------------------------