Blame |
Last modification |
View Log
| RSS feed
/**
* NyARParamにOpenGL向け関数を追加したもの
* (c)2008 A虎@nyatla.jp
* airmail(at)ebony.plala.or.jp
* http://nyatla.jp/
*/
package jp.nyatla.nyartoolkit.jogl.utils;
import jp.nyatla.nyartoolkit.core.NyARMat;
import jp.nyatla.nyartoolkit.core.NyARParam;
public class GLNyARParam extends NyARParam {
private double view_distance_min = 0.1;// #define VIEW_DISTANCE_MIN 0.1 //
// Objects closer to the camera than
// this will not be displayed.
private double view_distance_max = 100.0;// #define VIEW_DISTANCE_MAX
// 100.0 // Objects further away
// from the camera than this
// will not be displayed.
private double[] m_projection = null;
private float[] m_projectionF = null;
public void setViewDistanceMin(double i_new_value) {
m_projection = null;// キャッシュ済変数初期化
view_distance_min = i_new_value;
}
public void setViewDistanceMax(double i_new_value) {
m_projection = null;// キャッシュ済変数初期化
view_distance_max = i_new_value;
}
/**
* void arglCameraFrustumRH(const ARParam *cparam, const double focalmin,
* const double focalmax, GLdouble m_projection[16]) 関数の置き換え
*
* @param focalmin
* @param focalmax
* @return
*/
public double[] getCameraFrustumRH() {
// 既に値がキャッシュされていたらそれを使う
if (m_projection != null) {
return m_projection;
}
// 無ければ計算
m_projection = new double[16];
NyARMat trans_mat = new NyARMat(3, 4);
NyARMat icpara_mat = new NyARMat(3, 4);
double[][] p = new double[3][3], q = new double[4][4];
int width, height;
int i, j;
width = xsize;
height = ysize;
decompMat(icpara_mat, trans_mat);
double[][] icpara = icpara_mat.getArray();
double[][] trans = trans_mat.getArray();
for (i = 0; i < 4; i++) {
icpara[1][i] = (height - 1) * (icpara[2][i]) - icpara[1][i];
}
for (i = 0; i < 3; i++) {
for (j = 0; j < 3; j++) {
p[i][j] = icpara[i][j] / icpara[2][2];
}
}
q[0][0] = (2.0 * p[0][0] / (width - 1));
q[0][1] = (2.0 * p[0][1] / (width - 1));
q[0][2] = -((2.0 * p[0][2] / (width - 1)) - 1.0);
q[0][3] = 0.0;
q[1][0] = 0.0;
q[1][1] = -(2.0 * p[1][1] / (height - 1));
q[1][2] = -((2.0 * p[1][2] / (height - 1)) - 1.0);
q[1][3] = 0.0;
q[2][0] = 0.0;
q[2][1] = 0.0;
q[2][2] = (view_distance_max + view_distance_min)
/ (view_distance_min - view_distance_max);
q[2][3] = 2.0 * view_distance_max * view_distance_min
/ (view_distance_min - view_distance_max);
q[3][0] = 0.0;
q[3][1] = 0.0;
q[3][2] = -1.0;
q[3][3] = 0.0;
for (i = 0; i < 4; i++) { // Row.
// First 3 columns of the current row.
for (j = 0; j < 3; j++) { // Column.
m_projection[i + j * 4] = q[i][0] * trans[0][j] + q[i][1]
* trans[1][j] + q[i][2] * trans[2][j];
}
// Fourth column of the current row.
m_projection[i + 3 * 4] = q[i][0] * trans[0][3] + q[i][1]
* trans[1][3] + q[i][2] * trans[2][3] + q[i][3];
}
return m_projection;
}
public float[] getCameraFrustumRHf() {
// 既に値がキャッシュされていたらそれを使う
if (m_projectionF == null) {
double[] mf = getCameraFrustumRH();
m_projectionF = new float[mf.length];
for (int i = 0; i < mf.length; i++) {
m_projectionF[i] = (float) mf[i];
}
}
return m_projectionF;
}
}