diff options
Diffstat (limited to 'demos/RonsDemos/texgen.java')
| -rw-r--r-- | demos/RonsDemos/texgen.java | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/demos/RonsDemos/texgen.java b/demos/RonsDemos/texgen.java new file mode 100644 index 0000000..bbc3288 --- /dev/null +++ b/demos/RonsDemos/texgen.java @@ -0,0 +1,478 @@ +/**
+ * @(#) texgen.java
+ * @(#) author: Silicon Graphics, Inc. (converted to Java by Ron Cemer)
+ */
+
+/*
+ * Copyright (c) 1993-1997, 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+ * Unpublished-- rights reserved under the copyright laws of the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(R) is a registered trademark of Silicon Graphics, Inc.
+ */
+
+/* This program draws a texture mapped teapot with
+ * automatically generated texture coordinates. The
+ * texture is rendered as stripes on the teapot.
+ * Initially, the object is drawn with texture coordinates
+ * based upon the object coordinates of the vertex
+ * and distance from the plane x = 0. Pressing the 'e'
+ * key changes the coordinate generation to eye coordinates
+ * of the vertex. Pressing the 'o' key switches it back
+ * to the object coordinates. Pressing the 's' key
+ * changes the plane to a slanted one (x + y + z = 0).
+ * Pressing the 'x' key switches it back to x = 0.
+ */
+
+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.GLCanvas;
+
+public class texgen extends Applet
+{
+ // Data for drawing teapots:
+ /* Rim, body, lid, and bottom data must be reflected in x and
+ y; handle and spout data across the y axis only. */
+ private static final int patchdata[][] =
+ {
+ /* rim */
+ {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11,
+ 12, 13, 14, 15},
+ /* body */
+ {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+ 24, 25, 26, 27},
+ {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36,
+ 37, 38, 39, 40},
+ /* lid */
+ {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101,
+ 101, 0, 1, 2, 3,},
+ {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112,
+ 113, 114, 115, 116, 117},
+ /* bottom */
+ {118, 118, 118, 118, 124, 122, 119, 121, 123, 126,
+ 125, 120, 40, 39, 38, 37},
+ /* handle */
+ {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
+ 53, 54, 55, 56},
+ {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
+ 28, 65, 66, 67},
+ /* spout */
+ {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83},
+ {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+ 92, 93, 94, 95}
+ };
+ private static final float cpdata[][] =
+ {
+ {0.2f, 0.0f, 2.7f}, {0.2f, -0.112f, 2.7f}, {0.112f, -0.2f, 2.7f}, {0.0f,
+ -0.2f, 2.7f}, {1.3375f, 0.0f, 2.53125f}, {1.3375f, -0.749f, 2.53125f},
+ {0.749f, -1.3375f, 2.53125f}, {0.0f, -1.3375f, 2.53125f}, {1.4375f,
+ 0.0f, 2.53125f}, {1.4375f, -0.805f, 2.53125f}, {0.805f, -1.4375f,
+ 2.53125f}, {0.0f, -1.4375f, 2.53125f}, {1.5f, 0.0f, 2.4f}, {1.5f, -0.84f,
+ 2.4f}, {0.84f, -1.5f, 2.4f}, {0.0f, -1.5f, 2.4f}, {1.75f, 0.0f, 1.875f},
+ {1.75f, -0.98f, 1.875f}, {0.98f, -1.75f, 1.875f}, {0.0f, -1.75f,
+ 1.875f}, {2f, 0.0f, 1.35f}, {2f, -1.12f, 1.35f}, {1.12f, -2f, 1.35f},
+ {0.0f, -2f, 1.35f}, {2f, 0.0f, 0.9f}, {2f, -1.12f, 0.9f}, {1.12f, -2f,
+ 0.9f}, {0.0f, -2f, 0.9f}, {-2f, 0.0f, 0.9f}, {2f, 0.0f, 0.45f}, {2f, -1.12f,
+ 0.45f}, {1.12f, -2f, 0.45f}, {0.0f, -2f, 0.45f}, {1.5f, 0.0f, 0.225f},
+ {1.5f, -0.84f, 0.225f}, {0.84f, -1.5f, 0.225f}, {0.0f, -1.5f, 0.225f},
+ {1.5f, 0.0f, 0.15f}, {1.5f, -0.84f, 0.15f}, {0.84f, -1.5f, 0.15f}, {0.0f,
+ -1.5f, 0.15f}, {-1.6f, 0.0f, 2.025f}, {-1.6f, -0.3f, 2.025f}, {-1.5f,
+ -0.3f, 2.25f}, {-1.5f, 0.0f, 2.25f}, {-2.3f, 0.0f, 2.025f}, {-2.3f, -0.3f,
+ 2.025f}, {-2.5f, -0.3f, 2.25f}, {-2.5f, 0.0f, 2.25f}, {-2.7f, 0.0f,
+ 2.025f}, {-2.7f, -0.3f, 2.025f}, {-3f, -0.3f, 2.25f}, {-3f, 0.0f,
+ 2.25f}, {-2.7f, 0.0f, 1.8f}, {-2.7f, -0.3f, 1.8f}, {-3f, -0.3f, 1.8f},
+ {-3f, 0.0f, 1.8f}, {-2.7f, 0.0f, 1.575f}, {-2.7f, -0.3f, 1.575f}, {-3f,
+ -0.3f, 1.35f}, {-3f, 0.0f, 1.35f}, {-2.5f, 0.0f, 1.125f}, {-2.5f, -0.3f,
+ 1.125f}, {-2.65f, -0.3f, 0.9375f}, {-2.65f, 0.0f, 0.9375f}, {-2f,
+ -0.3f, 0.9f}, {-1.9f, -0.3f, 0.6f}, {-1.9f, 0.0f, 0.6f}, {1.7f, 0.0f,
+ 1.425f}, {1.7f, -0.66f, 1.425f}, {1.7f, -0.66f, 0.6f}, {1.7f, 0.0f,
+ 0.6f}, {2.6f, 0.0f, 1.425f}, {2.6f, -0.66f, 1.425f}, {3.1f, -0.66f,
+ 0.825f}, {3.1f, 0.0f, 0.825f}, {2.3f, 0.0f, 2.1f}, {2.3f, -0.25f, 2.1f},
+ {2.4f, -0.25f, 2.025f}, {2.4f, 0.0f, 2.025f}, {2.7f, 0.0f, 2.4f}, {2.7f,
+ -0.25f, 2.4f}, {3.3f, -0.25f, 2.4f}, {3.3f, 0.0f, 2.4f}, {2.8f, 0.0f,
+ 2.475f}, {2.8f, -0.25f, 2.475f}, {3.525f, -0.25f, 2.49375f},
+ {3.525f, 0.0f, 2.49375f}, {2.9f, 0.0f, 2.475f}, {2.9f, -0.15f, 2.475f},
+ {3.45f, -0.15f, 2.5125f}, {3.45f, 0.0f, 2.5125f}, {2.8f, 0.0f, 2.4f},
+ {2.8f, -0.15f, 2.4f}, {3.2f, -0.15f, 2.4f}, {3.2f, 0.0f, 2.4f}, {0.0f, 0.0f,
+ 3.15f}, {0.8f, 0.0f, 3.15f}, {0.8f, -0.45f, 3.15f}, {0.45f, -0.8f,
+ 3.15f}, {0.0f, -0.8f, 3.15f}, {0.0f, 0.0f, 2.85f}, {1.4f, 0.0f, 2.4f}, {1.4f,
+ -0.784f, 2.4f}, {0.784f, -1.4f, 2.4f}, {0.0f, -1.4f, 2.4f}, {0.4f, 0.0f,
+ 2.55f}, {0.4f, -0.224f, 2.55f}, {0.224f, -0.4f, 2.55f}, {0.0f, -0.4f,
+ 2.55f}, {1.3f, 0.0f, 2.55f}, {1.3f, -0.728f, 2.55f}, {0.728f, -1.3f,
+ 2.55f}, {0.0f, -1.3f, 2.55f}, {1.3f, 0.0f, 2.4f}, {1.3f, -0.728f, 2.4f},
+ {0.728f, -1.3f, 2.4f}, {0.0f, -1.3f, 2.4f}, {0.0f, 0.0f, 0.0f}, {1.425f,
+ -0.798f, 0.0f}, {1.5f, 0.0f, 0.075f}, {1.425f, 0.0f, 0.0f}, {0.798f, -1.425f,
+ 0.0f}, {0.0f, -1.5f, 0.075f}, {0.0f, -1.425f, 0.0f}, {1.5f, -0.84f, 0.075f},
+ {0.84f, -1.5f, 0.075f}
+ };
+ private static final float tex[] =
+ {
+ 0.0f, 0.0f,
+ 1.0f, 0.0f,
+ 0.0f, 1.0f,
+ 1.0f, 1.0f
+ };
+
+ texgenCanvas canvas = null;
+
+
+ /* Initialize the applet */
+
+
+ public void init()
+ {
+ Dimension d = getSize();
+ setLayout(new BorderLayout());
+ canvas = new texgenCanvas(d.width, d.height);
+ canvas.requestFocus();
+ add("Center", canvas);
+ }
+
+
+ /* Start the applet */
+
+
+ public void start()
+ {
+ }
+
+
+ /* Stop the applet */
+
+
+ public void stop()
+ {
+ }
+
+
+
+
+ /* Local GLCanvas extension class */
+
+
+ private class texgenCanvas extends GLCanvas
+ implements KeyListener, MouseListener
+ {
+ private static final int stripeImageWidth = 32;
+ private byte stripeImage[] = new byte[4*stripeImageWidth];
+ private int texName;
+
+ /* planes for texture coordinate generation */
+ private float xequalzero[] = {1.0f, 0.0f, 0.0f, 0.0f};
+ private float slanted[] = {1.0f, 1.0f, 1.0f, 0.0f};
+ private float currentCoeff[];
+ private int currentPlane;
+ private int currentGenMode;
+
+ public texgenCanvas(int w, int h)
+ {
+ super(w, h);
+ GLContext.gljNativeDebug = false;
+ GLContext.gljClassDebug = false;
+ }
+
+ public void preInit()
+ {
+ doubleBuffer = true;
+ stereoView = false;
+ }
+
+ public void init()
+ {
+ System.out.println("init(): " + this);
+ reshape(getSize().width, getSize().height);
+
+ gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+ gl.glEnable(GL_DEPTH_TEST);
+ gl.glShadeModel(GL_SMOOTH);
+
+ makeStripeImage();
+ gl.glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+ int tnbuf[] = new int[1];
+ gl.glGenTextures(1, tnbuf);
+ texName = tnbuf[0];
+ gl.glBindTexture(GL_TEXTURE_1D, texName);
+ gl.glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ gl.glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ gl.glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ gl.glTexImage1D
+ (GL_TEXTURE_1D,
+ 0,
+ GL_RGBA,
+ stripeImageWidth,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ stripeImage);
+ gl.glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+ currentCoeff = xequalzero;
+ currentGenMode = GL_OBJECT_LINEAR;
+ currentPlane = GL_OBJECT_PLANE;
+ gl.glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, currentGenMode);
+ gl.glTexGenfv(GL_S, currentPlane, currentCoeff);
+
+ gl.glEnable(GL_TEXTURE_GEN_S);
+ gl.glEnable(GL_TEXTURE_1D);
+ gl.glEnable(GL_CULL_FACE);
+ gl.glEnable(GL_LIGHTING);
+ gl.glEnable(GL_LIGHT0);
+ gl.glEnable(GL_AUTO_NORMAL);
+ gl.glEnable(GL_NORMALIZE);
+ gl.glFrontFace(GL_CW);
+ gl.glCullFace(GL_BACK);
+ gl.glMaterialf(GL_FRONT, GL_SHININESS, 64.0f);
+
+ glj.gljCheckGL();
+
+ addKeyListener(this);
+ addMouseListener(this);
+ }
+
+ public void cvsDispose()
+ {
+ System.out.println("destroy(): " + this);
+ removeKeyListener(this);
+ super.cvsDispose();
+ }
+
+ public void reshape(int width, int height)
+ {
+ gl.glViewport(0,0,width,height);
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glLoadIdentity();
+ if (width <= height)
+ gl.glOrtho
+ (-3.5f,3.5f,-3.5f*(float)height/(float)width,
+ 3.5f*(float)height/(float)width,-3.5f,3.5f);
+ else
+ gl.glOrtho
+ (-3.5f*(float)width/(float)height,
+ 3.5f*(float)width/(float)height,-3.5f,3.5f,-3.5f,3.5f);
+ gl.glMatrixMode(GL_MODELVIEW);
+ gl.glLoadIdentity();
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glLoadIdentity();
+ if (width <= height)
+ gl.glOrtho
+ (-3.5f,3.5f,-3.5f*(float)height/(float)width,
+ 3.5f*(float)height/(float)width,-3.5f,3.5f);
+ else
+ gl.glOrtho
+ (-3.5f*(float)width/(float)height,
+ 3.5f*(float)width/(float)height,-3.5f,3.5f,-3.5f,3.5f);
+ gl.glMatrixMode(GL_MODELVIEW);
+ gl.glLoadIdentity();
+ }
+
+ public void display()
+ {
+ if (glj.gljMakeCurrent() == false) return;
+
+ gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ gl.glPushMatrix ();
+ gl.glRotatef(45.0f, 0.0f, 0.0f, 1.0f);
+ gl.glBindTexture(GL_TEXTURE_1D, texName);
+ glutSolidTeapot(2.0f);
+ gl.glPopMatrix();
+ gl.glFlush();
+
+ glj.gljSwap();
+ glj.gljCheckGL();
+ glj.gljFree();
+ }
+
+ // 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 'e':
+ case 'E':
+ currentGenMode = GL_EYE_LINEAR;
+ currentPlane = GL_EYE_PLANE;
+ gl.glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, currentGenMode);
+ gl.glTexGenfv(GL_S, currentPlane, currentCoeff);
+ dorepaint = true;
+ break;
+ case 'o':
+ case 'O':
+ currentGenMode = GL_OBJECT_LINEAR;
+ currentPlane = GL_OBJECT_PLANE;
+ gl.glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, currentGenMode);
+ gl.glTexGenfv(GL_S, currentPlane, currentCoeff);
+ dorepaint = true;
+ break;
+ case 's':
+ case 'S':
+ currentCoeff = slanted;
+ gl.glTexGenfv(GL_S, currentPlane, currentCoeff);
+ dorepaint = true;
+ break;
+ case 'x':
+ case 'X':
+ currentCoeff = xequalzero;
+ gl.glTexGenfv(GL_S, currentPlane, currentCoeff);
+ dorepaint = true;
+ break;
+ }
+ glj.gljFree();
+ if (dorepaint) repaint();
+ }
+
+ private void makeStripeImage()
+ {
+ for (int j = 0; j < stripeImageWidth; j++)
+ {
+ stripeImage[4*j] = (byte)((j<=4) ? 255 : 0);
+ stripeImage[4*j+1] = (byte)((j>4) ? 255 : 0);
+ stripeImage[4*j+2] = (byte)0;
+ stripeImage[4*j+3] = (byte)255;
+ }
+ }
+
+ // Imported from glut.
+ private void glutSolidTeapot(double scale)
+ {
+ teapot(14, scale, GL_FILL);
+ }
+
+ // Imported from glut.
+ private void teapot(int grid, double scale, int type)
+ {
+ float p[] = new float[4*4*3];
+ float q[] = new float[4*4*3];
+ float r[] = new float[4*4*3];
+ float s[] = new float[4*4*3];
+ float sc = (float)(0.5*scale);
+
+ gl.glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT);
+ gl.glEnable(GL_AUTO_NORMAL);
+ gl.glEnable(GL_NORMALIZE);
+ gl.glEnable(GL_MAP2_VERTEX_3);
+ gl.glEnable(GL_MAP2_TEXTURE_COORD_2);
+ gl.glPushMatrix();
+ gl.glRotatef(270.0f, 1.0f, 0.0f, 0.0f);
+ gl.glScalef(sc, sc, sc);
+ gl.glTranslatef(0.0f, 0.0f, -1.5f);
+ for (int i = 0; i < 10; i++)
+ {
+ for (int j = 0; j < 4; j++)
+ {
+ for (int k = 0; k < 4; k++)
+ {
+ for (int l = 0; l < 3; l++)
+ {
+ p[(j*12)+(k*3)+l] = cpdata[patchdata[i][j * 4 + k]][l];
+ q[(j*12)+(k*3)+l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
+ if (l == 1)
+ q[(j*12)+(k*3)+l] *= -1.0f;
+ if (i < 6)
+ {
+ r[(j*12)+(k*3)+l] =
+ cpdata[patchdata[i][j * 4 + (3 - k)]][l];
+ if (l == 0)
+ r[(j*12)+(k*3)+l] *= -1.0f;
+ s[(j*12)+(k*3)+l] =
+ cpdata[patchdata[i][j * 4 + k]][l];
+ if (l == 0)
+ s[(j*12)+(k*3)+l] *= -1.0f;
+ if (l == 1)
+ s[(j*12)+(k*3)+l] *= -1.0f;
+ }
+ }
+ }
+ }
+ gl.glMap2f
+ (GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, tex);
+ gl.glMap2f
+ (GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, p);
+ gl.glMapGrid2f(grid, 0.0f, 1.0f, grid, 0.0f, 1.0f);
+ gl.glEvalMesh2(type, 0, grid, 0, grid);
+ gl.glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, q);
+ gl.glEvalMesh2(type, 0, grid, 0, grid);
+ if (i < 6)
+ {
+ gl.glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, r);
+ gl.glEvalMesh2(type, 0, grid, 0, grid);
+ gl.glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, s);
+ gl.glEvalMesh2(type, 0, grid, 0, grid);
+ }
+ }
+ gl.glPopMatrix();
+ gl.glPopAttrib();
+ }
+
+ // 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();
+ }
+ }
+ }
+}
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