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+/**
+ * @(#) scube.java
+ * @(#) author: David G Yu/Mark J. Kilgard/Silicon Graphics (converted to Java by Ron Cemer)
+ */
+
+/* Copyright (c) Mark J. Kilgard, 1994. */
+
+/**
+ * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States. Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+ */
+
+/*
+ * 1992 David G Yu -- Silicon Graphics Computer Systems
+ */
+
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.lang.*;
+import java.util.*;
+import java.io.*;
+import java.util.*;
+import gl4java.GLContext;
+import gl4java.awt.GLAnimCanvas;
+import gl4java.applet.SimpleGLAnimApplet1;
+
+public class scube extends SimpleGLAnimApplet1
+{
+
+ /* Initialize the applet */
+
+
+ public void init()
+ {
+ super.init();
+ Dimension d = getSize();
+ canvas = new scubeCanvas(d.width, d.height);
+ add("Center", canvas);
+ }
+
+
+ /* Local GLAnimCanvas extension class */
+
+
+ private class scubeCanvas extends GLAnimCanvas
+ implements KeyListener, MouseListener
+ {
+ private static final int
+ GREY=0,RED=1,GREEN=2,BLUE=3,CYAN=4,MAGENTA=5,YELLOW=6,BLACK=7;
+
+ private float materialColor[][] =
+ {
+ {0.8f, 0.8f, 0.8f, 1.0f},
+ {0.8f, 0.0f, 0.0f, 1.0f},
+ {0.0f, 0.8f, 0.0f, 1.0f},
+ {0.0f, 0.0f, 0.8f, 1.0f},
+ {0.0f, 0.8f, 0.8f, 1.0f},
+ {0.8f, 0.0f, 0.8f, 1.0f},
+ {0.8f, 0.8f, 0.0f, 1.0f},
+ {0.0f, 0.0f, 0.0f, 0.6f},
+ };
+
+ private float lightPos[] = {2.0f, 4.0f, 2.0f, 1.0f};
+ private float lightAmb[] = {0.2f, 0.2f, 0.2f, 1.0f};
+ private float lightDiff[] = {0.8f, 0.8f, 0.8f, 1.0f};
+ private float lightSpec[] = {0.4f, 0.4f, 0.4f, 1.0f};
+
+ private float groundPlane[] = {0.0f, 1.0f, 0.0f, 1.499f};
+ private float backPlane[] = {0.0f, 0.0f, 1.0f, 0.899f};
+
+ private float fogColor[] = {0.0f, 0.0f, 0.0f, 0.0f};
+ private float fogIndex[] = {0.0f};
+
+ private byte shadowPattern[] =
+ {
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55, /* 50% Grey */
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55,
+ (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0xaa, (byte)0x55, (byte)0x55, (byte)0x55, (byte)0x55
+ };
+
+ private byte sgiPattern[] =
+ {
+ (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, /* SGI Logo */
+ (byte)0xff, (byte)0xbd, (byte)0xff, (byte)0x83, (byte)0xff, (byte)0x5a, (byte)0xff, (byte)0xef,
+ (byte)0xfe, (byte)0xdb, (byte)0x7f, (byte)0xef, (byte)0xfd, (byte)0xdb, (byte)0xbf, (byte)0xef,
+ (byte)0xfb, (byte)0xdb, (byte)0xdf, (byte)0xef, (byte)0xf7, (byte)0xdb, (byte)0xef, (byte)0xef,
+ (byte)0xfb, (byte)0xdb, (byte)0xdf, (byte)0xef, (byte)0xfd, (byte)0xdb, (byte)0xbf, (byte)0x83,
+ (byte)0xce, (byte)0xdb, (byte)0x73, (byte)0xff, (byte)0xb7, (byte)0x5a, (byte)0xed, (byte)0xff,
+ (byte)0xbb, (byte)0xdb, (byte)0xdd, (byte)0xc7, (byte)0xbd, (byte)0xdb, (byte)0xbd, (byte)0xbb,
+ (byte)0xbe, (byte)0xbd, (byte)0x7d, (byte)0xbb, (byte)0xbf, (byte)0x7e, (byte)0xfd, (byte)0xb3,
+ (byte)0xbe, (byte)0xe7, (byte)0x7d, (byte)0xbf, (byte)0xbd, (byte)0xdb, (byte)0xbd, (byte)0xbf,
+ (byte)0xbb, (byte)0xbd, (byte)0xdd, (byte)0xbb, (byte)0xb7, (byte)0x7e, (byte)0xed, (byte)0xc7,
+ (byte)0xce, (byte)0xdb, (byte)0x73, (byte)0xff, (byte)0xfd, (byte)0xdb, (byte)0xbf, (byte)0xff,
+ (byte)0xfb, (byte)0xdb, (byte)0xdf, (byte)0x87, (byte)0xf7, (byte)0xdb, (byte)0xef, (byte)0xfb,
+ (byte)0xf7, (byte)0xdb, (byte)0xef, (byte)0xfb, (byte)0xfb, (byte)0xdb, (byte)0xdf, (byte)0xfb,
+ (byte)0xfd, (byte)0xdb, (byte)0xbf, (byte)0xc7, (byte)0xfe, (byte)0xdb, (byte)0x7f, (byte)0xbf,
+ (byte)0xff, (byte)0x5a, (byte)0xff, (byte)0xbf, (byte)0xff, (byte)0xbd, (byte)0xff, (byte)0xc3,
+ (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff
+ };
+
+ private float cube_vertexes[][][] =
+ {
+ {
+ {-1.0f, -1.0f, -1.0f, 1.0f},
+ {-1.0f, -1.0f, 1.0f, 1.0f},
+ {-1.0f, 1.0f, 1.0f, 1.0f},
+ {-1.0f, 1.0f, -1.0f, 1.0f}
+ },
+ {
+ {1.0f, 1.0f, 1.0f, 1.0f},
+ {1.0f, -1.0f, 1.0f, 1.0f},
+ {1.0f, -1.0f, -1.0f, 1.0f},
+ {1.0f, 1.0f, -1.0f, 1.0f}
+ },
+ {
+ {-1.0f, -1.0f, -1.0f, 1.0f},
+ {1.0f, -1.0f, -1.0f, 1.0f},
+ {1.0f, -1.0f, 1.0f, 1.0f},
+ {-1.0f, -1.0f, 1.0f, 1.0f}
+ },
+ {
+ {1.0f, 1.0f, 1.0f, 1.0f},
+ {1.0f, 1.0f, -1.0f, 1.0f},
+ {-1.0f, 1.0f, -1.0f, 1.0f},
+ {-1.0f, 1.0f, 1.0f, 1.0f}
+ },
+ {
+ {-1.0f, -1.0f, -1.0f, 1.0f},
+ {-1.0f, 1.0f, -1.0f, 1.0f},
+ {1.0f, 1.0f, -1.0f, 1.0f},
+ {1.0f, -1.0f, -1.0f, 1.0f}
+ },
+ {
+ {1.0f, 1.0f, 1.0f, 1.0f},
+ {-1.0f, 1.0f, 1.0f, 1.0f},
+ {-1.0f, -1.0f, 1.0f, 1.0f},
+ {1.0f, -1.0f, 1.0f, 1.0f}
+ }
+ };
+
+ private float cube_normals[][] =
+ {
+ {-1.0f, 0.0f, 0.0f, 0.0f},
+ {1.0f, 0.0f, 0.0f, 0.0f},
+ {0.0f, -1.0f, 0.0f, 0.0f},
+ {0.0f, 1.0f, 0.0f, 0.0f},
+ {0.0f, 0.0f, -1.0f, 0.0f},
+ {0.0f, 0.0f, 1.0f, 0.0f}
+ };
+
+ private boolean useLighting = true;
+ private boolean useFog = false;
+ private boolean useLogo = false;
+ private boolean useQuads = true;
+ private int tick = -1;
+
+ public scubeCanvas(int w, int h)
+ {
+ super(w, h);
+ GLContext.gljNativeDebug = false;
+ GLContext.gljClassDebug = false;
+ setAnimateFps(30.0);
+ }
+
+ public void preInit()
+ {
+ doubleBuffer = true;
+ stereoView = false;
+ }
+
+ public void init()
+ {
+ System.out.println("init(): " + this);
+ reshape(getSize().width, getSize().height);
+
+ /* setup context */
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glLoadIdentity();
+ gl.glFrustum(-1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 3.0f);
+
+ gl.glMatrixMode(GL_MODELVIEW);
+ gl.glLoadIdentity();
+ gl.glTranslatef(0.0f, 0.0f, -2.0f);
+
+ gl.glEnable(GL_DEPTH_TEST);
+
+ if (useLighting) gl.glEnable(GL_LIGHTING);
+ gl.glEnable(GL_LIGHT0);
+ gl.glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
+ gl.glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmb);
+ gl.glLightfv(GL_LIGHT0, GL_DIFFUSE, lightDiff);
+ gl.glLightfv(GL_LIGHT0, GL_SPECULAR, lightSpec);
+
+ gl.glEnable(GL_NORMALIZE);
+
+ if (useFog) gl.glEnable(GL_FOG);
+ gl.glFogfv(GL_FOG_COLOR, fogColor);
+ gl.glFogfv(GL_FOG_INDEX, fogIndex);
+ gl.glFogf(GL_FOG_MODE, GL_EXP);
+ gl.glFogf(GL_FOG_DENSITY, 0.5f);
+ gl.glFogf(GL_FOG_START, 1.0f);
+ gl.glFogf(GL_FOG_END, 3.0f);
+
+ gl.glEnable(GL_CULL_FACE);
+ gl.glCullFace(GL_BACK);
+
+ gl.glShadeModel(GL_SMOOTH);
+
+ gl.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ if (useLogo)
+ gl.glPolygonStipple(sgiPattern);
+ else
+ gl.glPolygonStipple(shadowPattern);
+
+ gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+ gl.glClearIndex(0);
+ gl.glClearDepth(1);
+
+ glj.gljCheckGL();
+
+ addKeyListener(this);
+ addMouseListener(this);
+ }
+
+ public void doCleanup()
+ {
+ System.out.println("destroy(): " + this);
+ removeKeyListener(this);
+ }
+
+ public void reshape(int width, int height)
+ {
+ gl.glViewport(0,0,width,height);
+
+// Put any custom reshape code here.
+
+ }
+
+ public void display()
+ {
+ if (glj.gljMakeCurrent() == false) return;
+
+ if (!isSuspended()) inctick();
+
+ float cubeXform[] = new float[16];
+
+ gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ gl.glPushMatrix();
+ gl.glTranslatef(0.0f, -1.5f, 0.0f);
+ gl.glRotatef(-90.0f, 1f, 0f, 0f);
+ gl.glScalef(2.0f, 2.0f, 2.0f);
+
+ drawCheck(6, 6, BLUE, YELLOW); /* draw ground */
+ gl.glPopMatrix();
+
+ gl.glPushMatrix();
+ gl.glTranslatef(0.0f, 0.0f, -0.9f);
+ gl.glScalef(2.0f, 2.0f, 2.0f);
+
+ drawCheck(6, 6, BLUE, YELLOW); /* draw back */
+ gl.glPopMatrix();
+
+ gl.glPushMatrix();
+ gl.glTranslatef(0.0f, 0.2f, 0.0f);
+ gl.glScalef(0.3f, 0.3f, 0.3f);
+ gl.glRotatef((360.0f / (30 * 1)) * tick, 1f, 0f, 0f);
+ gl.glRotatef((360.0f / (30 * 2)) * tick, 0f, 1f, 0f);
+ gl.glRotatef((360.0f / (30 * 4)) * tick, 0f, 0f, 1f);
+ gl.glScalef(1.0f, 2.0f, 1.0f);
+ gl.glGetFloatv(GL_MODELVIEW_MATRIX, cubeXform);
+
+ drawCube(RED); /* draw cube */
+ gl.glPopMatrix();
+
+ gl.glDepthMask(false);
+ gl.glEnable(GL_POLYGON_STIPPLE);
+ if (useFog) gl.glDisable(GL_FOG);
+ gl.glPushMatrix();
+ myShadowMatrix(groundPlane, lightPos);
+ gl.glTranslatef(0.0f, 0.0f, 2.0f);
+ gl.glMultMatrixf(cubeXform);
+
+ drawCube(BLACK); /* draw ground shadow */
+ gl.glPopMatrix();
+
+ gl.glPushMatrix();
+ myShadowMatrix(backPlane, lightPos);
+ gl.glTranslatef(0.0f, 0.0f, 2.0f);
+ gl.glMultMatrixf(cubeXform);
+
+ drawCube(BLACK); /* draw back shadow */
+ gl.glPopMatrix();
+
+ gl.glDepthMask(true);
+ gl.glDisable(GL_POLYGON_STIPPLE);
+ if (useFog) gl.glEnable(GL_FOG);
+
+ glj.gljSwap();
+ glj.gljCheckGL();
+ glj.gljFree();
+
+ //if (!isSuspended()) repaint(); // Animate at full speed.
+ }
+
+ // Methods required for the implementation of KeyListener
+ public void keyPressed(KeyEvent e)
+ {
+ }
+
+ public void keyReleased(KeyEvent e)
+ {
+ }
+
+ public void keyTyped(KeyEvent e)
+ {
+ if (glj.gljMakeCurrent() == false) return;
+ boolean dorepaint = false;
+ switch ((char)e.getKeyChar())
+ {
+ case 'L':
+ case 'l':
+ useLighting = !useLighting;
+ if (useLighting)
+ gl.glEnable(GL_LIGHTING);
+ else
+ gl.glDisable(GL_LIGHTING);
+ dorepaint = isSuspended();
+ break;
+ case 'S':
+ case 's':
+ useLogo = !useLogo;
+ if (useLogo)
+ gl.glPolygonStipple(sgiPattern);
+ else
+ gl.glPolygonStipple(shadowPattern);
+ dorepaint = isSuspended();
+ break;
+ case 'Q':
+ case 'q':
+ useQuads = !useQuads;
+ dorepaint = isSuspended();
+ break;
+ case 'F':
+ case 'f':
+ useFog = !useFog;
+ if (useFog)
+ gl.glEnable(GL_FOG);
+ else
+ gl.glDisable(GL_FOG);
+ dorepaint = isSuspended();
+ break;
+ case '1':
+ gl.glFogf(GL_FOG_MODE, GL_LINEAR);
+ dorepaint = isSuspended();
+ break;
+ case '2':
+ gl.glFogf(GL_FOG_MODE, GL_EXP);
+ dorepaint = isSuspended();
+ break;
+ case '3':
+ gl.glFogf(GL_FOG_MODE, GL_EXP2);
+ dorepaint = isSuspended();
+ break;
+ case 'P':
+ case 'p':
+ setSuspended(!isSuspended());
+ break;
+ case ' ':
+ if (isSuspended())
+ {
+ inctick();
+ dorepaint = true;
+ }
+ break;
+ }
+ glj.gljFree();
+ if (dorepaint) repaint();
+ }
+
+ private void inctick()
+ {
+ tick++;
+ if (tick >= 120) tick = 0;
+ }
+
+ private void setColor(int c)
+ {
+ if (useLighting)
+ gl.glMaterialfv
+ (GL_FRONT_AND_BACK,
+ GL_AMBIENT_AND_DIFFUSE,
+ materialColor[c]);
+ else
+ gl.glColor4fv(materialColor[c]);
+ }
+
+ private void drawCube(int color)
+ {
+ setColor(color);
+
+ for (int i = 0; i < 6; ++i)
+ {
+ gl.glNormal3fv(cube_normals[i]);
+ gl.glBegin(GL_POLYGON);
+ gl.glVertex4fv(cube_vertexes[i][0]);
+ gl.glVertex4fv(cube_vertexes[i][1]);
+ gl.glVertex4fv(cube_vertexes[i][2]);
+ gl.glVertex4fv(cube_vertexes[i][3]);
+ gl.glEnd();
+ }
+ }
+
+ private boolean check_initialized = false;
+ private boolean check_usedLighting = false;
+ private boolean check_usedQuads = false;
+ private int checklist = 0;
+
+ private void drawCheck(int w, int h, int evenColor, int oddColor)
+ {
+ if ( (!check_initialized)
+ || (check_usedLighting != useLighting)
+ || (check_usedQuads != useQuads) )
+ {
+ float square_normal[] = {0.0f, 0.0f, 1.0f, 0.0f};
+ float square[][] = new float[4][4];
+ int i, j;
+
+ if (checklist == 0) checklist = gl.glGenLists(1);
+ gl.glNewList(checklist, GL_COMPILE_AND_EXECUTE);
+ if (useQuads)
+ {
+ gl.glNormal3fv(square_normal);
+ gl.glBegin(GL_QUADS);
+ }
+ for (j = 0; j < h; ++j)
+ {
+ for (i = 0; i < w; ++i)
+ {
+ square[0][0] = -1.0f + 2.0f / w * i;
+ square[0][1] = -1.0f + 2.0f / h * (j + 1);
+ square[0][2] = 0.0f;
+ square[0][3] = 1.0f;
+
+ square[1][0] = -1.0f + 2.0f / w * i;
+ square[1][1] = -1.0f + 2.0f / h * j;
+ square[1][2] = 0.0f;
+ square[1][3] = 1.0f;
+
+ square[2][0] = -1.0f + 2.0f / w * (i + 1);
+ square[2][1] = -1.0f + 2.0f / h * j;
+ square[2][2] = 0.0f;
+ square[2][3] = 1.0f;
+
+ square[3][0] = -1.0f + 2.0f / w * (i + 1);
+ square[3][1] = -1.0f + 2.0f / h * (j + 1);
+ square[3][2] = 0.0f;
+ square[3][3] = 1.0f;
+
+ if ( ((i & 1) != 0) ^ ((j & 1) != 0) )
+ setColor(oddColor);
+ else
+ setColor(evenColor);
+
+ if (!useQuads)gl.glBegin(GL_POLYGON);
+ gl.glVertex4fv(square[0]);
+ gl.glVertex4fv(square[1]);
+ gl.glVertex4fv(square[2]);
+ gl.glVertex4fv(square[3]);
+ if (!useQuads) gl.glEnd();
+ }
+ }
+
+ if (useQuads) gl.glEnd();
+ gl.glEndList();
+
+ check_initialized = true;
+ check_usedLighting = useLighting;
+ check_usedQuads = useQuads;
+ }
+ else
+ gl.glCallList(checklist);
+ }
+
+ private void myShadowMatrix(float ground[], float light[])
+ {
+ float dot;
+ float shadowMat[] = new float[4*4];
+
+ dot =
+ ground[0] * light[0] +
+ ground[1] * light[1] +
+ ground[2] * light[2] +
+ ground[3] * light[3];
+
+ shadowMat[0] = dot - light[0] * ground[0];
+ shadowMat[4] = -light[0] * ground[1];
+ shadowMat[8] = -light[0] * ground[2];
+ shadowMat[12] = -light[0] * ground[3];
+
+ shadowMat[1] = -light[1] * ground[0];
+ shadowMat[5] = dot - light[1] * ground[1];
+ shadowMat[9] = -light[1] * ground[2];
+ shadowMat[13] = -light[1] * ground[3];
+
+ shadowMat[2] = -light[2] * ground[0];
+ shadowMat[6] = -light[2] * ground[1];
+ shadowMat[10] = dot - light[2] * ground[2];
+ shadowMat[14] = -light[2] * ground[3];
+
+ shadowMat[3] = -light[3] * ground[0];
+ shadowMat[7] = -light[3] * ground[1];
+ shadowMat[11] = -light[3] * ground[2];
+ shadowMat[15] = dot - light[3] * ground[3];
+
+ gl.glMultMatrixf(shadowMat);
+ }
+
+ // Methods required for the implementation of MouseListener
+ public void mouseEntered( MouseEvent evt )
+ {
+ Component comp = evt.getComponent();
+ if( comp.equals(this ) )
+ {
+ requestFocus();
+ }
+ }
+
+ public void mouseExited( MouseEvent evt )
+ { }
+ public void mousePressed( MouseEvent evt )
+ { }
+ public void mouseReleased( MouseEvent evt )
+ { }
+ public void mouseClicked( MouseEvent evt )
+ {
+ Component comp = evt.getComponent();
+ if( comp.equals(this ) )
+ {
+ requestFocus();
+ }
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-11 07:34:02 +0000