Attachment 86 Details for Bug 245 – new GLUT class with glutSolidCylinder, glutWireCylinder, glutSolidRhombicDodecahedron, and glutWireRhombicDodecahedron

new GLUT class with glutSolidCylinder, glutWireCylinder, glutSolidRhombicDodecahedron, and glutWireRhombicDodecahedron

GLUT.java (text/plain), 42.95 KB, created by Sven Gothel on 2006-09-02 10:28:00 CEST

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Creator: Sven Gothel

Created: 2006-09-02 10:28:00 CEST

Size: 42.95 KB

patch

obsolete

>/*
> * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
> * 
> * Redistribution and use in source and binary forms, with or without
> * modification, are permitted provided that the following conditions are
> * met:
> * 
> * - Redistribution of source code must retain the above copyright
> * notice, this list of conditions and the following disclaimer.
> * 
> * - Redistribution in binary form must reproduce the above copyright
> * notice, this list of conditions and the following disclaimer in the
> * documentation and/or other materials provided with the distribution.
> * 
> * Neither the name of Sun Microsystems, Inc. or the names of
> * contributors may be used to endorse or promote products derived from
> * this software without specific prior written permission.
> * 
> * This software is provided "AS IS," without a warranty of any kind. ALL
> * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
> * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
> * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
> * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
> * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
> * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
> * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
> * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
> * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
> * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
> * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
> * 
> * You acknowledge that this software is not designed or intended for use
> * in the design, construction, operation or maintenance of any nuclear
> * facility.
> * 
> * Sun gratefully acknowledges that this software was originally authored
> * and developed by Kenneth Bradley Russell and Christopher John Kline.
> */
>
>package com.sun.opengl.util;
>
>import javax.media.opengl.*;
>import javax.media.opengl.glu.*;
>
>/** Subset of the routines provided by the GLUT interface. Note the
> signatures of many of the methods are necessarily different than
> the corresponding C version. A GLUT object must only be used from
> one particular thread at a time. 
>
> Copyright (c) Mark J. Kilgard, 1994, 1997. 
>
> (c) Copyright 1993, 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. 
>*/
>
>public class GLUT {
> public static final int STROKE_ROMAN = 0;
> public static final int STROKE_MONO_ROMAN = 1;
> public static final int BITMAP_9_BY_15 = 2;
> public static final int BITMAP_8_BY_13 = 3;
> public static final int BITMAP_TIMES_ROMAN_10 = 4;
> public static final int BITMAP_TIMES_ROMAN_24 = 5;
> public static final int BITMAP_HELVETICA_10 = 6;
> public static final int BITMAP_HELVETICA_12 = 7;
> public static final int BITMAP_HELVETICA_18 = 8;
>
> private GLU glu = new GLU();
>
> //----------------------------------------------------------------------
> // Shapes
> //
>
> public void glutWireSphere(double radius, int slices, int stacks) {
> quadObjInit(glu);
> glu.gluQuadricDrawStyle(quadObj, GLU.GLU_LINE);
> glu.gluQuadricNormals(quadObj, GLU.GLU_SMOOTH);
> /* If we ever changed/used the texture or orientation state
> of quadObj, we'd need to change it to the defaults here
> with gluQuadricTexture and/or gluQuadricOrientation. */
> glu.gluSphere(quadObj, radius, slices, stacks);
> }
>
> public void glutSolidSphere(double radius, int slices, int stacks) {
> quadObjInit(glu);
> glu.gluQuadricDrawStyle(quadObj, GLU.GLU_FILL);
> glu.gluQuadricNormals(quadObj, GLU.GLU_SMOOTH);
> /* If we ever changed/used the texture or orientation state
> of quadObj, we'd need to change it to the defaults here
> with gluQuadricTexture and/or gluQuadricOrientation. */
> glu.gluSphere(quadObj, radius, slices, stacks);
> }
>
> public void glutWireCone(double base, double height,
> int slices, int stacks) {
> quadObjInit(glu);
> glu.gluQuadricDrawStyle(quadObj, GLU.GLU_LINE);
> glu.gluQuadricNormals(quadObj, GLU.GLU_SMOOTH);
> /* If we ever changed/used the texture or orientation state
> of quadObj, we'd need to change it to the defaults here
> with gluQuadricTexture and/or gluQuadricOrientation. */
> glu.gluCylinder(quadObj, base, 0.0, height, slices, stacks);
> }
>
> public void glutSolidCone(double base, double height,
> int slices, int stacks) {
> quadObjInit(glu);
> glu.gluQuadricDrawStyle(quadObj, GLU.GLU_FILL);
> glu.gluQuadricNormals(quadObj, GLU.GLU_SMOOTH);
> /* If we ever changed/used the texture or orientation state
> of quadObj, we'd need to change it to the defaults here
> with gluQuadricTexture and/or gluQuadricOrientation. */
> glu.gluCylinder(quadObj, base, 0.0, height, slices, stacks);
> }
>
> public void glutWireCylinder(double radius, double height, int slices, int stacks) {
> 	quadObjInit(glu);
> 	glu.gluQuadricDrawStyle(quadObj, GLU.GLU_LINE);
> 	glu.gluQuadricNormals(quadObj, GLU.GLU_SMOOTH);
> 	/* If we ever changed/used the texture or orientation state
> of quadObj, we'd need to change it to the defaults here
> with gluQuadricTexture and/or gluQuadricOrientation. */
> 	glu.gluCylinder(quadObj, radius, radius, height, slices, stacks);
> }
>
> public void glutSolidCylinder(double radius, double height, int slices, int stacks) {
> 	GL gl = glu.getCurrentGL();
> 	
> 	//	Prepare table of points for drawing end caps
> 	double [] x = new double[slices];
> 	double [] y = new double[slices];
> 	double angleDelta = Math.PI * 2 / slices;
> 	double angle = 0;
> 	for (int i = 0 ; i < slices ; i ++) {
> 		angle = i * angleDelta;
> 		x[i] = Math.cos(angle) * radius;
> 		y[i] = Math.sin(angle) * radius;
> 	}
> 	
> 	//	Draw bottom cap
> 	gl.glBegin(GL.GL_TRIANGLE_FAN);
> 	gl.glNormal3d(0,0,-1);
> 	gl.glVertex3d(0,0,0);
> 	for (int i = 0 ; i < slices ; i ++) {
> 		gl.glVertex3d(x[i], y[i], 0);
> 	}
> 	gl.glVertex3d(x[0], y[0], 0);
> 	gl.glEnd();
> 	
> 	//	Draw top cap
> 	gl.glBegin(GL.GL_TRIANGLE_FAN);
> 	gl.glNormal3d(0,0,1);
> 	gl.glVertex3d(0,0,height);
> 	for (int i = 0 ; i < slices ; i ++) {
> 		gl.glVertex3d(x[i], y[i], height);
> 	}
> 	gl.glVertex3d(x[0], y[0], height);
> 	gl.glEnd();
> 	
> 	//	Draw walls
> 	quadObjInit(glu);
> 	glu.gluQuadricDrawStyle(quadObj, GLU.GLU_FILL);
> 	glu.gluQuadricNormals(quadObj, GLU.GLU_SMOOTH);
> 	/* If we ever changed/used the texture or orientation state
> of quadObj, we'd need to change it to the defaults here
> with gluQuadricTexture and/or gluQuadricOrientation. */
> 	glu.gluCylinder(quadObj, radius, radius, height, slices, stacks);
> }
>
> public void glutWireCube(float size) {
> drawBox(GLU.getCurrentGL(), size, GL.GL_LINE_LOOP);
> }
>
> public void glutSolidCube(float size) {
> drawBox(GLU.getCurrentGL(), size, GL.GL_QUADS);
> }
>
> public void glutWireTorus(double innerRadius, double outerRadius,
> int nsides, int rings) {
> GL gl = GLU.getCurrentGL();
> gl.glPushAttrib(GL.GL_POLYGON_BIT);
> gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_LINE);
> doughnut(gl, innerRadius, outerRadius, nsides, rings);
> gl.glPopAttrib();
> }
>
> public void glutSolidTorus(double innerRadius, double outerRadius,
> int nsides, int rings) {
> doughnut(GLU.getCurrentGL(), innerRadius, outerRadius, nsides, rings);
> }
>
> public void glutWireDodecahedron() {
> dodecahedron(GLU.getCurrentGL(), GL.GL_LINE_LOOP);
> }
>
> public void glutSolidDodecahedron() {
> dodecahedron(GLU.getCurrentGL(), GL.GL_TRIANGLE_FAN);
> }
>
> public void glutWireOctahedron() {
> octahedron(GLU.getCurrentGL(), GL.GL_LINE_LOOP);
> }
>
> public void glutSolidOctahedron() {
> octahedron(GLU.getCurrentGL(), GL.GL_TRIANGLES);
> }
>
> public void glutWireIcosahedron() {
> icosahedron(GLU.getCurrentGL(), GL.GL_LINE_LOOP);
> }
>
> public void glutSolidIcosahedron() {
> icosahedron(GLU.getCurrentGL(), GL.GL_TRIANGLES);
> }
>
> public void glutWireTetrahedron() {
> tetrahedron(GLU.getCurrentGL(), GL.GL_LINE_LOOP);
> }
>
> public void glutSolidTetrahedron() {
> tetrahedron(GLU.getCurrentGL(), GL.GL_TRIANGLES);
> }
>
>/**
> * Renders the teapot as a solid shape of the specified size. The teapot is
> * created in a way that replicates the C GLUT implementation.
> * 
> * @param scale
> * the factor by which to scale the teapot
> */
> public void glutSolidTeapot(double scale) {
> glutSolidTeapot(scale, true);
> }
>
> /**
> * Renders the teapot as a solid shape of the specified size. The teapot can
> * either be created in a way that is backward-compatible with the standard
> * C glut library (i.e. broken), or in a more pleasing way (i.e. with
> * surfaces whose front-faces point outwards and standing on the z=0 plane,
> * instead of the y=-1 plane). Both surface normals and texture coordinates
> * for the teapot are generated. The teapot is generated with OpenGL
> * evaluators.
> * 
> * @param scale
> * the factor by which to scale the teapot
> * @param cStyle
> * whether to create the teapot in exactly the same way as in the C
> * implementation of GLUT
> */
> public void glutSolidTeapot(double scale, boolean cStyle) {
> teapot(GLU.getCurrentGL(), 14, scale, GL.GL_FILL, cStyle);
> }
>
> /**
> * Renders the teapot as a wireframe shape of the specified size. The teapot
> * is created in a way that replicates the C GLUT implementation.
> * 
> * @param scale
> * the factor by which to scale the teapot
> */
> public void glutWireTeapot(double scale) {
> glutWireTeapot(scale, true);
> }
> 
> /**
> * Renders the teapot as a wireframe shape of the specified size. The teapot
> * can either be created in a way that is backward-compatible with the
> * standard C glut library (i.e. broken), or in a more pleasing way (i.e.
> * with surfaces whose front-faces point outwards and standing on the z=0
> * plane, instead of the y=-1 plane). Both surface normals and texture
> * coordinates for the teapot are generated. The teapot is generated with
> * OpenGL evaluators.
> * 
> * @param scale
> * the factor by which to scale the teapot
> * @param cStyle
> * whether to create the teapot in exactly the same way as in the C
> * implementation of GLUT
> */
> public void glutWireTeapot(double scale, boolean cStyle) {
> teapot(GLU.getCurrentGL(), 10, scale, GL.GL_LINE, cStyle);
> }
>
> //----------------------------------------------------------------------
> // Fonts
> //
>
> public void glutBitmapCharacter(int font, char character) {
> GL gl = GLU.getCurrentGL();
> int[] swapbytes = new int[1];
> int[] lsbfirst = new int[1];
> int[] rowlength = new int[1];
> int[] skiprows = new int[1];
> int[] skippixels = new int[1];
> int[] alignment = new int[1];
> beginBitmap(gl,
> swapbytes,
> lsbfirst,
> rowlength,
> skiprows,
> skippixels,
> alignment);
> bitmapCharacterImpl(gl, font, character);
> endBitmap(gl,
> swapbytes,
> lsbfirst,
> rowlength,
> skiprows,
> skippixels,
> alignment);
> }
>
> public void glutBitmapString (int font, String string) {
> GL gl = GLU.getCurrentGL();
> int[] swapbytes = new int[1];
> int[] lsbfirst = new int[1];
> int[] rowlength = new int[1];
> int[] skiprows = new int[1];
> int[] skippixels = new int[1];
> int[] alignment = new int[1];
> beginBitmap(gl, 
> swapbytes,
> lsbfirst,
> rowlength,
> skiprows,
> skippixels,
> alignment);
> int len = string.length();
> for (int i = 0; i < len; i++) {
> bitmapCharacterImpl(gl, font, string.charAt(i));
> }
> endBitmap(gl, 
> swapbytes,
> lsbfirst,
> rowlength,
> skiprows,
> skippixels,
> alignment);
> }
>
> public int glutBitmapWidth (int font, char character) {
> BitmapFontRec fontinfo = getBitmapFont(font);
> int c = character & 0xFFFF;
> if (c < fontinfo.first || c >= fontinfo.first + fontinfo.num_chars)
> return 0;
> BitmapCharRec ch = fontinfo.ch[c - fontinfo.first];
> if (ch != null)
> return (int) ch.advance;
> else
> return 0;
> }
>
> public void glutStrokeCharacter(int font, char character) {
> GL gl = GLU.getCurrentGL();
> StrokeFontRec fontinfo = getStrokeFont(font);
> int c = character & 0xFFFF;
> if (c < 0 || c >= fontinfo.num_chars)
> return;
> StrokeCharRec ch = fontinfo.ch[c];
> if (ch != null) {
> for (int i = 0; i < ch.num_strokes; i++) {
> StrokeRec stroke = ch.stroke[i];
> gl.glBegin(GL.GL_LINE_STRIP);
> for (int j = 0; j < stroke.num_coords; j++) {
> CoordRec coord = stroke.coord[j];
> gl.glVertex2f(coord.x, coord.y);
> }
> gl.glEnd();
> }
> gl.glTranslatef(ch.right, 0.0f, 0.0f);
> }
> }
>
> public void glutStrokeString(int font, String string) {
> GL gl = GLU.getCurrentGL();
> StrokeFontRec fontinfo = getStrokeFont(font);
> int len = string.length();
> for (int pos = 0; pos < len; pos++) {
> int c = string.charAt(pos) & 0xFFFF;
> if (c < 0 || c >= fontinfo.num_chars)
> continue;
> StrokeCharRec ch = fontinfo.ch[c];
> if (ch != null) {
> for (int i = 0; i < ch.num_strokes; i++) {
> StrokeRec stroke = ch.stroke[i];
> gl.glBegin(GL.GL_LINE_STRIP);
> for (int j = 0; j < stroke.num_coords; j++) {
> CoordRec coord = stroke.coord[j];
> gl.glVertex2f(coord.x, coord.y);
> }
> gl.glEnd();
> }
> gl.glTranslatef(ch.right, 0.0f, 0.0f);
> }
> }
> }
>
> public int glutStrokeWidth (int font, char character) {
> return (int) glutStrokeWidthf(font, character);
> }
>
> public float glutStrokeWidthf (int font, char character) {
> StrokeFontRec fontinfo = getStrokeFont(font);
> int c = character & 0xFFFF;
> if (c < 0 || c >= fontinfo.num_chars)
> return 0;
> StrokeCharRec ch = fontinfo.ch[c];
> if (ch != null)
> return ch.right;
> else
> return 0;
> }
>
> public int glutBitmapLength (int font, String string) {
> BitmapFontRec fontinfo = getBitmapFont(font);
> int length = 0;
> int len = string.length();
> for (int pos = 0; pos < len; pos++) {
> int c = string.charAt(pos) & 0xFFFF;
> if (c >= fontinfo.first && c < fontinfo.first + fontinfo.num_chars) {
> BitmapCharRec ch = fontinfo.ch[c - fontinfo.first];
> if (ch != null)
> length += ch.advance;
> }
> }
> return length;
> }
>
> public int glutStrokeLength (int font, String string) {
> return (int) glutStrokeLengthf(font, string);
> }
>
> public float glutStrokeLengthf (int font, String string) {
> StrokeFontRec fontinfo = getStrokeFont(font);
> float length = 0;
> int len = string.length();
> for (int i = 0; i < len; i++) {
> char c = string.charAt(i);
> if (c >= 0 && c < fontinfo.num_chars) {
> StrokeCharRec ch = fontinfo.ch[c];
> if (ch != null)
> length += ch.right;
> }
> }
> return length;
> }
>
> /**
> This function draws a wireframe dodecahedron whose
> facets are rhombic and
> whose vertices are at unit radius.
> No facet lies normal to any coordinate axes.
> The polyhedron is centered at the origin.
> */
> public void glutWireRhombicDodecahedron() {
> GL gl = glu.getCurrentGL();
> for( int i = 0; i < 12; i++ )
> {
> gl.glBegin( GL.GL_LINE_LOOP );
> gl.glNormal3dv( rdod_n[ i ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 0 ] ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 1 ] ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 2 ] ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 3 ] ],0 );
> gl.glEnd( );
> }
> }
> 
> /**
> This function draws a solid-shaded dodecahedron
> whose facets are rhombic and
> whose vertices are at unit radius.
> No facet lies normal to any coordinate axes.
> The polyhedron is centered at the origin.
> */
> public void glutSolidRhombicDodecahedron() {
> GL gl = glu.getCurrentGL();
> gl.glBegin( GL.GL_QUADS );
> for( int i = 0; i < 12; i++ )
> {
> gl.glNormal3dv( rdod_n[ i ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 0 ] ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 1 ] ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 2 ] ],0 );
> gl.glVertex3dv( rdod_r[ rdod_v[ i ][ 3 ] ],0 );
> }
> gl.glEnd( );
> }
> 
> //----------------------------------------------------------------------
> // Internals only below this point
> //
>
> //----------------------------------------------------------------------
> // Shape implementation
> //
>
> private GLUquadric quadObj;
> private void quadObjInit(GLU glu) {
> if (quadObj == null) {
> quadObj = glu.gluNewQuadric();
> }
> if (quadObj == null) {
> throw new GLException("Out of memory");
> }
> }
>
> private static void doughnut(GL gl, double r, double R, int nsides, int rings) {
> int i, j;
> float theta, phi, theta1;
> float cosTheta, sinTheta;
> float cosTheta1, sinTheta1;
> float ringDelta, sideDelta;
>
> ringDelta = (float) (2.0 * Math.PI / rings);
> sideDelta = (float) (2.0 * Math.PI / nsides);
>
> theta = 0.0f;
> cosTheta = 1.0f;
> sinTheta = 0.0f;
> for (i = rings - 1; i >= 0; i--) {
> theta1 = theta + ringDelta;
> cosTheta1 = (float) Math.cos(theta1);
> sinTheta1 = (float) Math.sin(theta1);
> gl.glBegin(GL.GL_QUAD_STRIP);
> phi = 0.0f;
> for (j = nsides; j >= 0; j--) {
> float cosPhi, sinPhi, dist;
>
> phi += sideDelta;
> cosPhi = (float) Math.cos(phi);
> sinPhi = (float) Math.sin(phi);
> dist = (float) (R + r * cosPhi);
>
> gl.glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
> gl.glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, (float) r * sinPhi);
> gl.glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
> gl.glVertex3f(cosTheta * dist, -sinTheta * dist, (float) r * sinPhi);
> }
> gl.glEnd();
> theta = theta1;
> cosTheta = cosTheta1;
> sinTheta = sinTheta1;
> }
> }
>
> private static float[][] boxVertices;
> private static final float[][] boxNormals = {
> {-1.0f, 0.0f, 0.0f},
> {0.0f, 1.0f, 0.0f},
> {1.0f, 0.0f, 0.0f},
> {0.0f, -1.0f, 0.0f},
> {0.0f, 0.0f, 1.0f},
> {0.0f, 0.0f, -1.0f}
> };
> private static final int[][] boxFaces = {
> {0, 1, 2, 3},
> {3, 2, 6, 7},
> {7, 6, 5, 4},
> {4, 5, 1, 0},
> {5, 6, 2, 1},
> {7, 4, 0, 3}
> };
> private void drawBox(GL gl, float size, int type) {
> if (boxVertices == null) {
> float[][] v = new float[8][];
> for (int i = 0; i < 8; i++) {
> v[i] = new float[3];
> }
> v[0][0] = v[1][0] = v[2][0] = v[3][0] = -0.5f;
> v[4][0] = v[5][0] = v[6][0] = v[7][0] = 0.5f;
> v[0][1] = v[1][1] = v[4][1] = v[5][1] = -0.5f;
> v[2][1] = v[3][1] = v[6][1] = v[7][1] = 0.5f;
> v[0][2] = v[3][2] = v[4][2] = v[7][2] = -0.5f;
> v[1][2] = v[2][2] = v[5][2] = v[6][2] = 0.5f;
> boxVertices = v;
> }
> float[][] v = boxVertices;
> float[][] n = boxNormals;
> int[][] faces = boxFaces;
> for (int i = 5; i >= 0; i--) {
> gl.glBegin(type);
> gl.glNormal3fv(n[i], 0);
> float[] vt = v[faces[i][0]];
> gl.glVertex3f(vt[0] * size, vt[1] * size, vt[2] * size);
> vt = v[faces[i][1]];
> gl.glVertex3f(vt[0] * size, vt[1] * size, vt[2] * size);
> vt = v[faces[i][2]];
> gl.glVertex3f(vt[0] * size, vt[1] * size, vt[2] * size);
> vt = v[faces[i][3]];
> gl.glVertex3f(vt[0] * size, vt[1] * size, vt[2] * size);
> gl.glEnd();
> }
> }
>
> private float[][] dodec;
>
> private void initDodecahedron() {
> dodec = new float[20][];
> for (int i = 0; i < dodec.length; i++) {
> dodec[i] = new float[3];
> }
>
> float alpha, beta;
>
> alpha = (float) Math.sqrt(2.0f / (3.0f + Math.sqrt(5.0)));
> beta = 1.0f + (float) Math.sqrt(6.0 / (3.0 + Math.sqrt(5.0)) -
> 2.0 + 2.0 * Math.sqrt(2.0 / (3.0 + Math.sqrt(5.0))));
> dodec[0][0] = -alpha; dodec[0][1] = 0; dodec[0][2] = beta;
> dodec[1][0] = alpha; dodec[1][1] = 0; dodec[1][2] = beta;
> dodec[2][0] = -1; dodec[2][1] = -1; dodec[2][2] = -1;
> dodec[3][0] = -1; dodec[3][1] = -1; dodec[3][2] = 1;
> dodec[4][0] = -1; dodec[4][1] = 1; dodec[4][2] = -1;
> dodec[5][0] = -1; dodec[5][1] = 1; dodec[5][2] = 1;
> dodec[6][0] = 1; dodec[6][1] = -1; dodec[6][2] = -1;
> dodec[7][0] = 1; dodec[7][1] = -1; dodec[7][2] = 1;
> dodec[8][0] = 1; dodec[8][1] = 1; dodec[8][2] = -1;
> dodec[9][0] = 1; dodec[9][1] = 1; dodec[9][2] = 1;
> dodec[10][0] = beta; dodec[10][1] = alpha; dodec[10][2] = 0;
> dodec[11][0] = beta; dodec[11][1] = -alpha; dodec[11][2] = 0;
> dodec[12][0] = -beta; dodec[12][1] = alpha; dodec[12][2] = 0;
> dodec[13][0] = -beta; dodec[13][1] = -alpha; dodec[13][2] = 0;
> dodec[14][0] = -alpha; dodec[14][1] = 0; dodec[14][2] = -beta;
> dodec[15][0] = alpha; dodec[15][1] = 0; dodec[15][2] = -beta;
> dodec[16][0] = 0; dodec[16][1] = beta; dodec[16][2] = alpha;
> dodec[17][0] = 0; dodec[17][1] = beta; dodec[17][2] = -alpha;
> dodec[18][0] = 0; dodec[18][1] = -beta; dodec[18][2] = alpha;
> dodec[19][0] = 0; dodec[19][1] = -beta; dodec[19][2] = -alpha;
> }
>
> private static void diff3(float[] a, float[] b, float[] c) {
> c[0] = a[0] - b[0];
> c[1] = a[1] - b[1];
> c[2] = a[2] - b[2];
> }
>
> private static void crossprod(float[] v1, float[] v2, float[] prod) {
> float[] p = new float[3]; /* in case prod == v1 or v2 */
>
> p[0] = v1[1] * v2[2] - v2[1] * v1[2];
> p[1] = v1[2] * v2[0] - v2[2] * v1[0];
> p[2] = v1[0] * v2[1] - v2[0] * v1[1];
> prod[0] = p[0];
> prod[1] = p[1];
> prod[2] = p[2];
> }
>
> private static void normalize(float[] v) {
> float d;
>
> d = (float) Math.sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
> if (d == 0.0) {
> v[0] = d = 1.0f;
> }
> d = 1 / d;
> v[0] *= d;
> v[1] *= d;
> v[2] *= d;
> }
>
> private void pentagon(GL gl, int a, int b, int c, int d, int e, int shadeType) {
> float[] n0 = new float[3];
> float[] d1 = new float[3];
> float[] d2 = new float[3];
>
> diff3(dodec[a], dodec[b], d1);
> diff3(dodec[b], dodec[c], d2);
> crossprod(d1, d2, n0);
> normalize(n0);
>
> gl.glBegin(shadeType);
> gl.glNormal3fv(n0, 0);
> gl.glVertex3fv(dodec[a], 0);
> gl.glVertex3fv(dodec[b], 0);
> gl.glVertex3fv(dodec[c], 0);
> gl.glVertex3fv(dodec[d], 0);
> gl.glVertex3fv(dodec[e], 0);
> gl.glEnd();
> }
>
> private void dodecahedron(GL gl, int type) {
> if (dodec == null) {
> initDodecahedron();
> }
> pentagon(gl, 0, 1, 9, 16, 5, type);
> pentagon(gl, 1, 0, 3, 18, 7, type);
> pentagon(gl, 1, 7, 11, 10, 9, type);
> pentagon(gl, 11, 7, 18, 19, 6, type);
> pentagon(gl, 8, 17, 16, 9, 10, type);
> pentagon(gl, 2, 14, 15, 6, 19, type);
> pentagon(gl, 2, 13, 12, 4, 14, type);
> pentagon(gl, 2, 19, 18, 3, 13, type);
> pentagon(gl, 3, 0, 5, 12, 13, type);
> pentagon(gl, 6, 15, 8, 10, 11, type);
> pentagon(gl, 4, 17, 8, 15, 14, type);
> pentagon(gl, 4, 12, 5, 16, 17, type);
> }
>
> private static void recorditem(GL gl, float[] n1, float[] n2, float[] n3, int shadeType) {
> float[] q0 = new float[3];
> float[] q1 = new float[3];
>
> diff3(n1, n2, q0);
> diff3(n2, n3, q1);
> crossprod(q0, q1, q1);
> normalize(q1);
>
> gl.glBegin(shadeType);
> gl.glNormal3fv(q1, 0);
> gl.glVertex3fv(n1, 0);
> gl.glVertex3fv(n2, 0);
> gl.glVertex3fv(n3, 0);
> gl.glEnd();
> }
>
> private static void subdivide(GL gl, float[] v0, float[] v1, float[] v2, int shadeType) {
> int depth;
> float[] w0 = new float[3];
> float[] w1 = new float[3];
> float[] w2 = new float[3];
> float l;
> int i, j, k, n;
>
> depth = 1;
> for (i = 0; i < depth; i++) {
> for (j = 0; i + j < depth; j++) {
> k = depth - i - j;
> for (n = 0; n < 3; n++) {
> w0[n] = (i * v0[n] + j * v1[n] + k * v2[n]) / depth;
> w1[n] = ((i + 1) * v0[n] + j * v1[n] + (k - 1) * v2[n])
> / depth;
> w2[n] = (i * v0[n] + (j + 1) * v1[n] + (k - 1) * v2[n])
> / depth;
> }
> l = (float) Math.sqrt(w0[0] * w0[0] + w0[1] * w0[1] + w0[2] * w0[2]);
> w0[0] /= l;
> w0[1] /= l;
> w0[2] /= l;
> l = (float) Math.sqrt(w1[0] * w1[0] + w1[1] * w1[1] + w1[2] * w1[2]);
> w1[0] /= l;
> w1[1] /= l;
> w1[2] /= l;
> l = (float) Math.sqrt(w2[0] * w2[0] + w2[1] * w2[1] + w2[2] * w2[2]);
> w2[0] /= l;
> w2[1] /= l;
> w2[2] /= l;
> recorditem(gl, w1, w0, w2, shadeType);
> }
> }
> }
>
> private static void drawtriangle(GL gl, int i, float[][] data, int[][] ndx, int shadeType) {
> float[] x0 = data[ndx[i][0]];
> float[] x1 = data[ndx[i][1]];
> float[] x2 = data[ndx[i][2]];
> subdivide(gl, x0, x1, x2, shadeType);
> }
>
> /* octahedron data: The octahedron produced is centered at the
> origin and has radius 1.0 */
> private static final float[][] odata =
> {
> {1.0f, 0.0f, 0.0f},
> {-1.0f, 0.0f, 0.0f},
> {0.0f, 1.0f, 0.0f},
> {0.0f, -1.0f, 0.0f},
> {0.0f, 0.0f, 1.0f},
> {0.0f, 0.0f, -1.0f}
> };
>
> private static final int[][] ondex =
> {
> {0, 4, 2},
> {1, 2, 4},
> {0, 3, 4},
> {1, 4, 3},
> {0, 2, 5},
> {1, 5, 2},
> {0, 5, 3},
> {1, 3, 5}
> };
>
> private static void octahedron(GL gl, int shadeType) {
> int i;
>
> for (i = 7; i >= 0; i--) {
> drawtriangle(gl, i, odata, ondex, shadeType);
> }
> }
>
> /* icosahedron data: These numbers are rigged to make an
> icosahedron of radius 1.0 */
>
> private static final float X = .525731112119133606f;
> private static final float Z = .850650808352039932f;
>
> private static final float[][] idata =
> {
> {-X, 0, Z},
> {X, 0, Z},
> {-X, 0, -Z},
> {X, 0, -Z},
> {0, Z, X},
> {0, Z, -X},
> {0, -Z, X},
> {0, -Z, -X},
> {Z, X, 0},
> {-Z, X, 0},
> {Z, -X, 0},
> {-Z, -X, 0}
> };
>
> private static final int[][] index =
> {
> {0, 4, 1},
> {0, 9, 4},
> {9, 5, 4},
> {4, 5, 8},
> {4, 8, 1},
> {8, 10, 1},
> {8, 3, 10},
> {5, 3, 8},
> {5, 2, 3},
> {2, 7, 3},
> {7, 10, 3},
> {7, 6, 10},
> {7, 11, 6},
> {11, 0, 6},
> {0, 1, 6},
> {6, 1, 10},
> {9, 0, 11},
> {9, 11, 2},
> {9, 2, 5},
> {7, 2, 11},
> };
>
> private static void icosahedron(GL gl, int shadeType) {
> int i;
>
> for (i = 19; i >= 0; i--) {
> drawtriangle(gl, i, idata, index, shadeType);
> }
> }
>
> /* rhombic dodecahedron data: */
> 
> private static final double rdod_r[][] =
> {
> { 0.0, 0.0, 1.0 },
> { 0.707106781187, 0.000000000000, 0.5 },
> { 0.000000000000, 0.707106781187, 0.5 },
> { -0.707106781187, 0.000000000000, 0.5 },
> { 0.000000000000, -0.707106781187, 0.5 },
> { 0.707106781187, 0.707106781187, 0.0 },
> { -0.707106781187, 0.707106781187, 0.0 },
> { -0.707106781187, -0.707106781187, 0.0 },
> { 0.707106781187, -0.707106781187, 0.0 },
> { 0.707106781187, 0.000000000000, -0.5 },
> { 0.000000000000, 0.707106781187, -0.5 },
> { -0.707106781187, 0.000000000000, -0.5 },
> { 0.000000000000, -0.707106781187, -0.5 },
> { 0.0, 0.0, -1.0 }
> };
> 
> private static final int rdod_v[][] =
> {
> { 0, 1, 5, 2 },
> { 0, 2, 6, 3 },
> { 0, 3, 7, 4 },
> { 0, 4, 8, 1 },
> { 5, 10, 6, 2 },
> { 6, 11, 7, 3 },
> { 7, 12, 8, 4 },
> { 8, 9, 5, 1 },
> { 5, 9, 13, 10 },
> { 6, 10, 13, 11 },
> { 7, 11, 13, 12 },
> { 8, 12, 13, 9 }
> };
> 
> private static final double rdod_n[][] =
> {
> { 0.353553390594, 0.353553390594, 0.5 },
> { -0.353553390594, 0.353553390594, 0.5 },
> { -0.353553390594, -0.353553390594, 0.5 },
> { 0.353553390594, -0.353553390594, 0.5 },
> { 0.000000000000, 1.000000000000, 0.0 },
> { -1.000000000000, 0.000000000000, 0.0 },
> { 0.000000000000, -1.000000000000, 0.0 },
> { 1.000000000000, 0.000000000000, 0.0 },
> { 0.353553390594, 0.353553390594, -0.5 },
> { -0.353553390594, 0.353553390594, -0.5 },
> { -0.353553390594, -0.353553390594, -0.5 },
> { 0.353553390594, -0.353553390594, -0.5 }
> };
> 
> /* tetrahedron data: */
>
> private static final float T = 1.73205080756887729f;
>
> private static final float[][] tdata =
> {
> {T, T, T},
> {T, -T, -T},
> {-T, T, -T},
> {-T, -T, T}
> };
>
> private static final int[][] tndex =
> {
> {0, 1, 3},
> {2, 1, 0},
> {3, 2, 0},
> {1, 2, 3}
> };
>
> private static final void tetrahedron(GL gl, int shadeType) {
> for (int i = 3; i >= 0; i--)
> drawtriangle(gl, i, tdata, tndex, shadeType);
> }
>
> // Teapot implementation (a modified port of glut_teapot.c)
> //
> // 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[][] teapotPatchData = {
> /* 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[][] teapotCPData = {
> {0.2f, 0f, 2.7f},
> {0.2f, -0.112f, 2.7f},
> {0.112f, -0.2f, 2.7f},
> {0f, -0.2f, 2.7f},
> {1.3375f, 0f, 2.53125f},
> {1.3375f, -0.749f, 2.53125f},
> {0.749f, -1.3375f, 2.53125f},
> {0f, -1.3375f, 2.53125f},
> {1.4375f, 0f, 2.53125f},
> {1.4375f, -0.805f, 2.53125f},
> {0.805f, -1.4375f, 2.53125f},
> {0f, -1.4375f, 2.53125f},
> {1.5f, 0f, 2.4f},
> {1.5f, -0.84f, 2.4f},
> {0.84f, -1.5f, 2.4f},
> {0f, -1.5f, 2.4f},
> {1.75f, 0f, 1.875f},
> {1.75f, -0.98f, 1.875f},
> {0.98f, -1.75f, 1.875f},
> {0f, -1.75f, 1.875f},
> {2f, 0f, 1.35f},
> {2f, -1.12f, 1.35f},
> {1.12f, -2f, 1.35f},
> {0f, -2f, 1.35f},
> {2f, 0f, 0.9f},
> {2f, -1.12f, 0.9f},
> {1.12f, -2f, 0.9f},
> {0f, -2f, 0.9f},
> {-2f, 0f, 0.9f},
> {2f, 0f, 0.45f},
> {2f, -1.12f, 0.45f},
> {1.12f, -2f, 0.45f},
> {0f, -2f, 0.45f},
> {1.5f, 0f, 0.225f},
> {1.5f, -0.84f, 0.225f},
> {0.84f, -1.5f, 0.225f},
> {0f, -1.5f, 0.225f},
> {1.5f, 0f, 0.15f},
> {1.5f, -0.84f, 0.15f},
> {0.84f, -1.5f, 0.15f},
> {0f, -1.5f, 0.15f},
> {-1.6f, 0f, 2.025f},
> {-1.6f, -0.3f, 2.025f},
> {-1.5f, -0.3f, 2.25f},
> {-1.5f, 0f, 2.25f},
> {-2.3f, 0f, 2.025f},
> {-2.3f, -0.3f, 2.025f},
> {-2.5f, -0.3f, 2.25f},
> {-2.5f, 0f, 2.25f},
> {-2.7f, 0f, 2.025f},
> {-2.7f, -0.3f, 2.025f},
> {-3f, -0.3f, 2.25f},
> {-3f, 0f, 2.25f},
> {-2.7f, 0f, 1.8f},
> {-2.7f, -0.3f, 1.8f},
> {-3f, -0.3f, 1.8f},
> {-3f, 0f, 1.8f},
> {-2.7f, 0f, 1.575f},
> {-2.7f, -0.3f, 1.575f},
> {-3f, -0.3f, 1.35f},
> {-3f, 0f, 1.35f},
> {-2.5f, 0f, 1.125f},
> {-2.5f, -0.3f, 1.125f},
> {-2.65f, -0.3f, 0.9375f},
> {-2.65f, 0f, 0.9375f},
> {-2f, -0.3f, 0.9f},
> {-1.9f, -0.3f, 0.6f},
> {-1.9f, 0f, 0.6f},
> {1.7f, 0f, 1.425f},
> {1.7f, -0.66f, 1.425f},
> {1.7f, -0.66f, 0.6f},
> {1.7f, 0f, 0.6f},
> {2.6f, 0f, 1.425f},
> {2.6f, -0.66f, 1.425f},
> {3.1f, -0.66f, 0.825f},
> {3.1f, 0f, 0.825f},
> {2.3f, 0f, 2.1f},
> {2.3f, -0.25f, 2.1f},
> {2.4f, -0.25f, 2.025f},
> {2.4f, 0f, 2.025f},
> {2.7f, 0f, 2.4f},
> {2.7f, -0.25f, 2.4f},
> {3.3f, -0.25f, 2.4f},
> {3.3f, 0f, 2.4f},
> {2.8f, 0f, 2.475f},
> {2.8f, -0.25f, 2.475f},
> {3.525f, -0.25f, 2.49375f},
> {3.525f, 0f, 2.49375f},
> {2.9f, 0f, 2.475f},
> {2.9f, -0.15f, 2.475f},
> {3.45f, -0.15f, 2.5125f},
> {3.45f, 0f, 2.5125f},
> {2.8f, 0f, 2.4f},
> {2.8f, -0.15f, 2.4f},
> {3.2f, -0.15f, 2.4f},
> {3.2f, 0f, 2.4f},
> {0f, 0f, 3.15f},
> {0.8f, 0f, 3.15f},
> {0.8f, -0.45f, 3.15f},
> {0.45f, -0.8f, 3.15f},
> {0f, -0.8f, 3.15f},
> {0f, 0f, 2.85f},
> {1.4f, 0f, 2.4f},
> {1.4f, -0.784f, 2.4f},
> {0.784f, -1.4f, 2.4f},
> {0f, -1.4f, 2.4f},
> {0.4f, 0f, 2.55f},
> {0.4f, -0.224f, 2.55f},
> {0.224f, -0.4f, 2.55f},
> {0f, -0.4f, 2.55f},
> {1.3f, 0f, 2.55f},
> {1.3f, -0.728f, 2.55f},
> {0.728f, -1.3f, 2.55f},
> {0f, -1.3f, 2.55f},
> {1.3f, 0f, 2.4f},
> {1.3f, -0.728f, 2.4f},
> {0.728f, -1.3f, 2.4f},
> {0f, -1.3f, 2.4f},
> {0f, 0f, 0f},
> {1.425f, -0.798f, 0f},
> {1.5f, 0f, 0.075f},
> {1.425f, 0f, 0f},
> {0.798f, -1.425f, 0f},
> {0f, -1.5f, 0.075f},
> {0f, -1.425f, 0f},
> {1.5f, -0.84f, 0.075f},
> {0.84f, -1.5f, 0.075f}
> };
> // Since GL.glMap2f expects a packed array of floats, we must convert
> // from a 3-dimensional array to a 1-dimensional array
> private static final float[] teapotTex = {
> 0, 0, 1, 0, 0, 1, 1, 1
> };
>
> private static void teapot(GL gl,
> int grid,
> double scale,
> int type,
> boolean backCompatible)
> {
> // As mentioned above, GL.glMap2f expects a packed array of floats
> 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];
> int i, j, k, l;
> 
> gl.glPushAttrib(GL.GL_ENABLE_BIT | GL.GL_EVAL_BIT | GL.GL_POLYGON_BIT);
> gl.glEnable(GL.GL_AUTO_NORMAL);
> gl.glEnable(GL.GL_NORMALIZE);
> gl.glEnable(GL.GL_MAP2_VERTEX_3);
> gl.glEnable(GL.GL_MAP2_TEXTURE_COORD_2);
> gl.glPushMatrix();
> if (!backCompatible) {
> // The time has come to have the teapot no longer be inside out
> gl.glFrontFace(GL.GL_CW);
> gl.glScaled(0.5*scale, 0.5*scale, 0.5*scale);
> } else {
> // We want the teapot in it's backward compatible position and
> // orientation
> gl.glRotatef(270.0f, 1, 0, 0);
> gl.glScalef((float)(0.5 * scale),
> (float)(0.5 * scale),
> (float)(0.5 * scale));
> gl.glTranslatef(0.0f, 0.0f, -1.5f);
> }
> for (i = 0; i < 10; i++) {
> for (j = 0; j < 4; j++) {
> for (k = 0; k < 4; k++) {
> for (l = 0; l < 3; l++) {
> p[(j*4+k)*3+l] = teapotCPData[teapotPatchData[i][j * 4 + k]][l];
> q[(j*4+k)*3+l] =
> teapotCPData[teapotPatchData[i][j * 4 + (3 - k)]][l];
> if (l == 1)
> q[(j*4+k)*3+l] *= -1.0;
> if (i < 6) {
> r[(j*4+k)*3+l] =
> teapotCPData[teapotPatchData[i][j * 4 + (3 - k)]][l];
> if (l == 0)
> r[(j*4+k)*3+l] *= -1.0;
> s[(j*4+k)*3+l] = teapotCPData[teapotPatchData[i][j * 4 + k]][l];
> if (l == 0)
> s[(j*4+k)*3+l] *= -1.0;
> if (l == 1)
> s[(j*4+k)*3+l] *= -1.0;
> }
> }
> }
> }
> gl.glMap2f(GL.GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, teapotTex, 0);
> gl.glMap2f(GL.GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, p, 0);
> gl.glMapGrid2f(grid, 0.0f, 1.0f, grid, 0.0f, 1.0f);
> evaluateTeapotMesh(gl, grid, type, i, !backCompatible);
> gl.glMap2f(GL.GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, q, 0);
> evaluateTeapotMesh(gl, grid, type, i, !backCompatible);
> if (i < 6) {
> gl.glMap2f(GL.GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, r, 0);
> evaluateTeapotMesh(gl, grid, type, i, !backCompatible);
> gl.glMap2f(GL.GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, s, 0);
> evaluateTeapotMesh(gl, grid, type, i, !backCompatible);
> }
> }
> gl.glPopMatrix();
> gl.glPopAttrib();
> }
> 
> private static void evaluateTeapotMesh(GL gl,
> int grid,
> int type,
> int partNum,
> boolean repairSingularities)
> {
> if (repairSingularities && (partNum == 5 || partNum == 3)) {
> // Instead of using evaluators that give bad results at singularities,
> // evaluate by hand
> gl.glPolygonMode(GL.GL_FRONT_AND_BACK, type);
> for (int nv = 0; nv < grid; nv++) {
> if (nv == 0) {
> // Draw a small triangle-fan to fill the hole
> gl.glDisable(GL.GL_AUTO_NORMAL);
> gl.glNormal3f(0, 0, partNum == 3 ? 1 : -1);
> gl.glBegin(GL.GL_TRIANGLE_FAN);
> {
> gl.glEvalCoord2f(0, 0);
> // Note that we draw in clock-wise order to match the evaluator
> // method
> for (int nu = 0; nu <= grid; nu++)
> {
> gl.glEvalCoord2f(nu / (float)grid, (1f / grid) / (float)grid);
> }
> }
> gl.glEnd();
> gl.glEnable(GL.GL_AUTO_NORMAL);
> }
> // Draw the rest of the piece as an evaluated quad-strip
> gl.glBegin(GL.GL_QUAD_STRIP);
> {
> // Note that we draw in clock-wise order to match the evaluator method
> for (int nu = grid; nu >= 0; nu--) {
> gl.glEvalCoord2f(nu / (float)grid, (nv + 1) / (float)grid);
> gl.glEvalCoord2f(nu / (float)grid, Math.max(nv, 1f / grid)
> / (float)grid);
> }
> }
> gl.glEnd();
> }
> } else {
> gl.glEvalMesh2(type, 0, grid, 0, grid);
> }
> }
>
> //----------------------------------------------------------------------
> // Font implementation
> //
>
> private static void bitmapCharacterImpl(GL gl, int font, char cin) {
> BitmapFontRec fontinfo = getBitmapFont(font);
> int c = cin & 0xFFFF;
> if (c < fontinfo.first ||
> c >= fontinfo.first + fontinfo.num_chars)
> return;
> BitmapCharRec ch = fontinfo.ch[c - fontinfo.first];
> if (ch != null) {
> gl.glBitmap(ch.width, ch.height, ch.xorig, ch.yorig,
> ch.advance, 0, ch.bitmap, 0);
> }
> }
>
> private static final BitmapFontRec[] bitmapFonts = new BitmapFontRec[9];
> private static final StrokeFontRec[] strokeFonts = new StrokeFontRec[9];
>
> private static BitmapFontRec getBitmapFont(int font) {
> BitmapFontRec rec = bitmapFonts[font];
> if (rec == null) {
> switch (font) {
> case BITMAP_9_BY_15:
> rec = GLUTBitmap9x15.glutBitmap9By15;
> break;
> case BITMAP_8_BY_13:
> rec = GLUTBitmap8x13.glutBitmap8By13;
> break;
> case BITMAP_TIMES_ROMAN_10:
> rec = GLUTBitmapTimesRoman10.glutBitmapTimesRoman10;
> break;
> case BITMAP_TIMES_ROMAN_24:
> rec = GLUTBitmapTimesRoman24.glutBitmapTimesRoman24;
> break;
> case BITMAP_HELVETICA_10:
> rec = GLUTBitmapHelvetica10.glutBitmapHelvetica10;
> break;
> case BITMAP_HELVETICA_12:
> rec = GLUTBitmapHelvetica12.glutBitmapHelvetica12;
> break;
> case BITMAP_HELVETICA_18:
> rec = GLUTBitmapHelvetica18.glutBitmapHelvetica18;
> break;
> default:
> throw new GLException("Unknown bitmap font number " + font);
> }
> bitmapFonts[font] = rec;
> }
> return rec;
> }
>
> private static StrokeFontRec getStrokeFont(int font) {
> StrokeFontRec rec = strokeFonts[font];
> if (rec == null) {
> switch (font) {
> case STROKE_ROMAN:
> rec = GLUTStrokeRoman.glutStrokeRoman;
> break;
> case STROKE_MONO_ROMAN:
> rec = GLUTStrokeMonoRoman.glutStrokeMonoRoman;
> break;
> default:
> throw new GLException("Unknown stroke font number " + font);
> }
> }
> return rec;
> }
>
> private static void beginBitmap(GL gl,
> int[] swapbytes,
> int[] lsbfirst,
> int[] rowlength,
> int[] skiprows,
> int[] skippixels,
> int[] alignment) {
> gl.glGetIntegerv(GL.GL_UNPACK_SWAP_BYTES, swapbytes, 0);
> gl.glGetIntegerv(GL.GL_UNPACK_LSB_FIRST, lsbfirst, 0);
> gl.glGetIntegerv(GL.GL_UNPACK_ROW_LENGTH, rowlength, 0);
> gl.glGetIntegerv(GL.GL_UNPACK_SKIP_ROWS, skiprows, 0);
> gl.glGetIntegerv(GL.GL_UNPACK_SKIP_PIXELS, skippixels, 0);
> gl.glGetIntegerv(GL.GL_UNPACK_ALIGNMENT, alignment, 0);
> /* Little endian machines (DEC Alpha for example) could
> benefit from setting GL_UNPACK_LSB_FIRST to GL_TRUE
> instead of GL_FALSE, but this would require changing the
> generated bitmaps too. */
> gl.glPixelStorei(GL.GL_UNPACK_SWAP_BYTES, GL.GL_FALSE);
> gl.glPixelStorei(GL.GL_UNPACK_LSB_FIRST, GL.GL_FALSE);
> gl.glPixelStorei(GL.GL_UNPACK_ROW_LENGTH, 0);
> gl.glPixelStorei(GL.GL_UNPACK_SKIP_ROWS, 0);
> gl.glPixelStorei(GL.GL_UNPACK_SKIP_PIXELS, 0);
> gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
> }
>
> private static void endBitmap(GL gl,
> int[] swapbytes,
> int[] lsbfirst,
> int[] rowlength,
> int[] skiprows,
> int[] skippixels,
> int[] alignment) {
> /* Restore saved modes. */
> gl.glPixelStorei(GL.GL_UNPACK_SWAP_BYTES, swapbytes[0]);
> gl.glPixelStorei(GL.GL_UNPACK_LSB_FIRST, lsbfirst[0]);
> gl.glPixelStorei(GL.GL_UNPACK_ROW_LENGTH, rowlength[0]);
> gl.glPixelStorei(GL.GL_UNPACK_SKIP_ROWS, skiprows[0]);
> gl.glPixelStorei(GL.GL_UNPACK_SKIP_PIXELS, skippixels[0]);
> gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, alignment[0]);
> }
>}

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Attachments on bug 245: 86