```// 直方体を xy-平面上に描くクラス
// 平行移動メソッド graphics.Parallel を適用
// x,y,z 軸回りに回転させる (graphics.Rotate を適用)
// パラメータは, 平行移動距離 d_x, d_y, d_z, 軸 char axis1, double theta1,
// char axis2, 回転角度 double theta2, char axis3, double theta3, 大きさ double scale

import java.applet.Applet;
import java.awt.*;

public class cuboid4c extends Applet {
public static void paint(Graphics g, int d_x, int d_y, int d_z, char axis1, double theta1,
char axis2, double theta2, char axis3, double theta3, double scale) {
// int d_x = 100;         // 平行移動距離(x 軸方向)
// int d_y = 100;         // 平行移動距離(y 軸方向)
// int d_z = 100;         // 平行移動距離(z 軸方向)
// char axis1 ='z';
// char axis2 ='y';
// char axis3 ='x';
// double theta1 = 10;
// double theta2 = 20;
// double theta3 = 30;
// double scale = 1.0;    // 大きさ
int a = 15;               // 大きさ a×b×c の直方体
int b = 30;
int c = 45;
_xyz abc = new _xyz();
_xyz lmn = new _xyz();
lmn.x = d_x; lmn.y = d_y; lmn.z = d_z;

// 座標軸
graphics.SetColor(g,0x000000);
graphics.DrawLine(g,-200,0,200,0);
graphics.DrawLine(g,0,-200,0,200);

// 稜
graphics.SetColor(g,0x0000ff00);
// 下底
draw_line(g,a,0,0,a,0,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,0,c,a,0,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,0,0,0,0,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,0,0,a,0,0,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
//上底
draw_line(g,a,b,0,a,b,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,b,c,a,b,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,b,0,0,b,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,b,0,a,b,0,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
//右側面
draw_line(g,a,0,c,a,b,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,0,c,0,b,c,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
//左側面
draw_line(g,a,0,0,a,b,0,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
draw_line(g,0,0,0,0,b,0,lmn,axis1,theta1,axis2,theta2,axis3,theta3,scale);
}

static void draw_line(Graphics g, int x1, int y1, int z1, int x2, int y2, int z2, _xyz lmn, char axis1, double theta1,
char axis2, double theta2, char axis3, double theta3, double scale) {
// 点 (x1,y1,z1) と (x2,y2,z2) を lmn だけ平行移動してから axis1 軸の回りに theta1 度,
axis2 軸の回りに theta2 度, axis3 軸の回りに theta3 度 この順に回転させ,さらに scale 倍して, この2点間の線分を描く
_xyz xyz = new _xyz();

xyz.x = x1; xyz.y = y1; xyz.z = z1;
x1 = (int)(graphics.Rotate(graphics.Rotate(graphics.Rotate(graphics.Parallel(xyz,lmn),axis1,theta1),axis2,theta2),axis3,theta3).x * scale);
y1 = (int)(graphics.Rotate(graphics.Rotate(graphics.Rotate(graphics.Parallel(xyz,lmn),axis1,theta1),axis2,theta2),axis3,theta3).y * scale);
xyz.x = x2; xyz.y = y2; xyz.z = z2;
x2 = (int)(graphics.Rotate(graphics.Rotate(graphics.Rotate(graphics.Parallel(xyz,lmn),axis1,theta1),axis2,theta2),axis3,theta3).x * scale);
y2 = (int)(graphics.Rotate(graphics.Rotate(graphics.Rotate(graphics.Parallel(xyz,lmn),axis1,theta1),axis2,theta2),axis3,theta3).y * scale);

graphics.DrawLine(g,x1,y1,x2,y2);
}
}

```