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Java™ Binding for the OpenGL® API (Atomic Jar files)
package jogamp.opengl.glu.gl2.nurbs;
import jogamp.opengl.glu.nurbs.*;
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 2.0 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
*/
import java.lang.reflect.Method;
import javax.media.opengl.GL2;
import javax.media.opengl.glu.GLUnurbs;
/**
* Base object for working with NURBS curves and surfaces
*
* @author Tomas Hrasky
*
*/
public class GLUgl2nurbsImpl implements GLUnurbs {
/**
* Curve type - no type
*/
public static final int CT_NONE = 0;
/**
* Curve type - NURBS curve
*/
public static final int CT_NURBSCURVE = 1;
/**
* Curve type - picewise linear curve
*/
public static final int CT_NPWLCURVE = 2;
/**
* Matrixes autoloading
*/
private final boolean autoloadmode;
/**
* Using callback
* private final int callBackFlag;
*/
/**
* Object for error call backs
* private final Object errorCallback;
*/
/**
* List of map definitions
*/
Maplist maplist;
/**
* Indicates validity of data
*/
private int isDataValid;
/**
* Are we in the middle of curve processing
*/
private int inCurve;
/**
* Current curve
*/
private O_curve currentCurve;
/**
* Are we in trim
*/
private boolean inTrim;
/**
* Are we playbacking curve/surface rendering
*/
private boolean playBack;
/**
* Next curve in linked list
*/
private O_curve nextCurve;
/**
* Is curve modified
* private int isCurveModified;
*/
/**
* Object holding rendering settings
*/
private final Renderhints renderhints;
/**
* Display list
* private DisplayList dl;
*/
/**
* Object for subdividing curves and surfaces
*/
private final Subdivider subdivider;
/**
* Object responsible for rendering
* private Backend backend;
*/
/**
* Next picewise linear curve in linked list
* private O_pwlcurve nextPwlcurve;
*/
/**
* Next trimming NURBS curve in linked list
*/
private O_nurbscurve nextNurbscurve;
/**
* Are we in the middle of surface processing
*/
private int inSurface;
/**
* Are there any changes in trimming
* private boolean isTrimModified;
*/
/**
* Are there any changes in surface data
* private boolean isDataSurfaceModified;
*/
/**
* Nurber of trmims of processed surface
*/
private int numTrims;
/**
* Current processed surface
*/
private O_surface currentSurface;
/**
* Next trimming curve
*/
private O_trim nextTrim;
/**
* Nextr surface in linked list
* private O_nurbssurface nextNurbssurface;
*/
/**
* Are there any changes in surface
* private boolean isSurfaceModified;
*/
/**
* Initializes default GLUgl2nurbs object
*/
public GLUgl2nurbsImpl() {
// DONE
maplist = new Maplist();
renderhints = new Renderhints();
subdivider = new Subdivider();
// original code
redefineMaps();
defineMap(GL2.GL_MAP2_NORMAL, 0, 3);
defineMap(GL2.GL_MAP1_NORMAL, 0, 3);
defineMap(GL2.GL_MAP2_TEXTURE_COORD_1, 0, 1);
defineMap(GL2.GL_MAP1_TEXTURE_COORD_1, 0, 1);
defineMap(GL2.GL_MAP2_TEXTURE_COORD_2, 0, 2);
defineMap(GL2.GL_MAP1_TEXTURE_COORD_2, 0, 2);
defineMap(GL2.GL_MAP2_TEXTURE_COORD_3, 0, 3);
defineMap(GL2.GL_MAP1_TEXTURE_COORD_3, 0, 3);
defineMap(GL2.GL_MAP2_TEXTURE_COORD_4, 1, 4);
defineMap(GL2.GL_MAP1_TEXTURE_COORD_4, 1, 4);
defineMap(GL2.GL_MAP2_VERTEX_4, 1, 4);
defineMap(GL2.GL_MAP1_VERTEX_4, 1, 4);
defineMap(GL2.GL_MAP2_VERTEX_3, 0, 3);
defineMap(GL2.GL_MAP1_VERTEX_3, 0, 3);
defineMap(GL2.GL_MAP2_COLOR_4, 0, 4);
defineMap(GL2.GL_MAP1_COLOR_4, 0, 4);
defineMap(GL2.GL_MAP2_INDEX, 0, 1);
defineMap(GL2.GL_MAP1_INDEX, 0, 1);
setnurbsproperty(GL2.GL_MAP1_VERTEX_3, NurbsConsts.N_SAMPLINGMETHOD,
NurbsConsts.N_PATHLENGTH);
setnurbsproperty(GL2.GL_MAP1_VERTEX_4, NurbsConsts.N_SAMPLINGMETHOD,
NurbsConsts.N_PATHLENGTH);
setnurbsproperty(GL2.GL_MAP2_VERTEX_3, NurbsConsts.N_SAMPLINGMETHOD,
NurbsConsts.N_PATHLENGTH);
setnurbsproperty(GL2.GL_MAP2_VERTEX_4, NurbsConsts.N_SAMPLINGMETHOD,
NurbsConsts.N_PATHLENGTH);
setnurbsproperty(GL2.GL_MAP1_VERTEX_3, NurbsConsts.N_PIXEL_TOLERANCE,
(float) 50.0);
setnurbsproperty(GL2.GL_MAP1_VERTEX_4, NurbsConsts.N_PIXEL_TOLERANCE,
(float) 50.0);
setnurbsproperty(GL2.GL_MAP2_VERTEX_3, NurbsConsts.N_PIXEL_TOLERANCE,
(float) 50.0);
setnurbsproperty(GL2.GL_MAP2_VERTEX_4, NurbsConsts.N_PIXEL_TOLERANCE,
(float) 50.0);
setnurbsproperty(GL2.GL_MAP1_VERTEX_3, NurbsConsts.N_ERROR_TOLERANCE,
(float) 0.50);
setnurbsproperty(GL2.GL_MAP1_VERTEX_4, NurbsConsts.N_ERROR_TOLERANCE,
(float) 0.50);
setnurbsproperty(GL2.GL_MAP2_VERTEX_3, NurbsConsts.N_ERROR_TOLERANCE,
(float) 0.50);
setnurbsproperty(GL2.GL_MAP2_VERTEX_4, NurbsConsts.N_ERROR_TOLERANCE,
(float) 0.50);
setnurbsproperty(GL2.GL_MAP1_VERTEX_3, NurbsConsts.N_S_STEPS,
(float) 100.0);
setnurbsproperty(GL2.GL_MAP1_VERTEX_4, NurbsConsts.N_S_STEPS,
(float) 100.0);
setnurbsproperty(GL2.GL_MAP2_VERTEX_3, NurbsConsts.N_S_STEPS,
(float) 100.0);
setnurbsproperty(GL2.GL_MAP2_VERTEX_4, NurbsConsts.N_S_STEPS,
(float) 100.0);
setnurbsproperty(GL2.GL_MAP1_VERTEX_3, NurbsConsts.N_SAMPLINGMETHOD,
NurbsConsts.N_PATHLENGTH);
set_domain_distance_u_rate(100.0);
set_domain_distance_v_rate(100.0);
set_is_domain_distance_sampling(0);
this.autoloadmode = true;
// this.callBackFlag = 0;
// this.errorCallback = null;
}
/**
* Sets domain distance for dom.dist. sampling in u direction
*
* @param d
* distance
*/
private void set_domain_distance_u_rate(final double d) {
// DONE
subdivider.set_domain_distance_u_rate(d);
}
/**
* Sets domain distance for dom.dist. sampling in v direction
*
* @param d
* distance
*/
private void set_domain_distance_v_rate(final double d) {
// DONE
subdivider.set_domain_distance_v_rate(d);
}
/**
* Begins new NURBS curve
*/
public void bgncurve() {
// DONE
final O_curve o_curve = new O_curve();
thread("do_bgncurve", o_curve);
}
/**
* Calls a method with given name and passes argumet
*
* @param name
* name of a method to be called
* @param arg
* parameter to be passed to called method
*/
private void thread(final String name, final Object arg) {
// DONE
final Class partype[] = new Class[1];
partype[0] = arg.getClass();
Method m;
try {
m = this.getClass().getMethod(name, partype);
/* if (dl != null) {
dl.append(this, m, arg);
} else */ {
m.invoke(this, new Object[] { arg });
}
} catch (final Throwable e) {
e.printStackTrace();
}
}
/**
* Calls a method with given name
*
* @param name
* name of a method to be called
*/
private void thread2(final String name) {
// DONE
try {
final Method m = this.getClass().getMethod(name, (Class[]) null);
/* if (dl != null) {
dl.append(this, m, null);
} else */ {
m.invoke(this, (Object[]) null);
}
} catch (final Throwable e) {
e.printStackTrace();
}
}
/**
* Begins a NURBS curve
*
* @param o_curve
* curve object
*/
public void do_bgncurve(final O_curve o_curve) {
if (inCurve > 0) {
do_nurbserror(6);
endcurve();
}
inCurve = 1;
currentCurve = o_curve;
currentCurve.curvetype = CT_NONE;
if (inTrim) {
if (!nextCurve.equals(o_curve)) {
// isCurveModified = 1;
nextCurve = o_curve;
}
} else {
if (!playBack)
bgnrender();
isDataValid = 1;
}
nextCurve = o_curve.next;
// kind of solution of union
// nextPwlcurve = o_curve.o_pwlcurve;
nextNurbscurve = o_curve.o_nurbscurve;
}
/**
* Begins new surface
*
* @param o_surface
* surface object
*/
public void do_bgnsurface(final O_surface o_surface) {
// DONE
if (inSurface > 0) {
do_nurbserror(27);
endsurface();
}
inSurface = 1;
if (!playBack)
bgnrender();
// isTrimModified = false;
// isDataSurfaceModified = false;
isDataValid = 1;
numTrims = 0;
currentSurface = o_surface;
nextTrim = o_surface.o_trim;
// nextNurbssurface = o_surface.o_nurbssurface;
}
/**
* End a curve
*/
public void endcurve() {
// DONE
thread2("do_endcurve");
}
/**
* Ends surface
*/
public void do_endsurface() {
// DONE
if (inTrim) {
do_nurbserror(12);
endtrim();
}
if (inSurface <= 0) {
do_nurbserror(13);
return;
}
inSurface = 0;
// nextNurbssurface = null;
if (isDataValid <= 0) {
return;
}
if (nextTrim != null) {
// isTrimModified = true;
nextTrim = null;
}
// TODO errval ??
if (numTrims > 0) {
// System.out.println("TODO glunurbs.do_endsurface - numtrims > 0");
}
subdivider.beginQuilts(new GL2Backend());
for (O_nurbssurface n = currentSurface.o_nurbssurface; n != null; n = n.next) {
subdivider.addQuilt(n.bezier_patches);
}
subdivider.endQuilts();
subdivider.drawSurfaces();
if (!playBack)
endrender();
}
/**
* Ends a curve
*/
public void do_endcurve() {
// DONE
// // System.out.println("do_endcurve");
if (inCurve <= 0) {
do_nurbserror(7);
return;
}
inCurve = 0;
nextCurve = null;
if (currentCurve.curvetype == CT_NURBSCURVE) {
// nextNurbscurve = null;
// currentCurve.o_nurbscurve=null;
} else {
// nextPwlcurve = null;
// currentCurve.o_pwlcurve=null;
}
if (!inTrim) {
if (isDataValid <= 0) {
return;
}
// TODO errval?
if (currentCurve.curvetype == CT_NURBSCURVE) {
subdivider.beginQuilts(new GL2Backend());
for (O_nurbscurve n = currentCurve.o_nurbscurve; n != null; n = n.next)
subdivider.addQuilt(n.bezier_curves);
subdivider.endQuilts();
subdivider.drawCurves();
if (!playBack)
endrender();
} else {
if (!playBack)
endrender();
do_nurbserror(9);
}
}
}
/**
* Method for handling error codes
*
* @param i
* error code
*/
private void do_nurbserror(final int i) {
// TODO nurberror
// System.out.println("TODO nurbserror " + i);
}
/**
* Begin rendering
*/
private void bgnrender() {
// DONE
if (autoloadmode) {
loadGLMatrices();
}
}
/**
* Load matrices from OpenGL state machine
*/
private void loadGLMatrices() {
// TODO Auto-generated method stub
// System.out.println("TODO glunurbs.loadGLMatrices");
}
/**
* End rendering
*/
private void endrender() {
// DONE
}
/**
* Make a NURBS curve
*
* @param nknots
* number of knots in knot vector
* @param knot
* knot vector
* @param stride
* number of control points coordinates
* @param ctlarray
* control points
* @param order
* order of the curve
* @param realType
* type of the curve
*/
public void nurbscurve(final int nknots, final float[] knot, final int stride,
final float[] ctlarray, final int order, final int realType) {
// DONE
final Mapdesc mapdesc = maplist.locate(realType);
if (mapdesc == null) {
do_nurbserror(35);
isDataValid = 0;
return;
}
if (ctlarray == null) {
do_nurbserror(36);
isDataValid = 0;
return;
}
if (stride < 0) {
do_nurbserror(34);
isDataValid = 0;
return;
}
final Knotvector knots = new Knotvector(nknots, stride, order, knot);
if (!do_check_knots(knots, "curve"))
return;
final O_nurbscurve o_nurbscurve = new O_nurbscurve(realType);
o_nurbscurve.bezier_curves = new Quilt(mapdesc);
final CArrayOfFloats ctrlcarr = new CArrayOfFloats(ctlarray);
o_nurbscurve.bezier_curves.toBezier(knots, ctrlcarr, mapdesc
.getNCoords());
thread("do_nurbscurve", o_nurbscurve);
}
/**
* Check knot vector specification
*
* @param knots
* knot vector
* @param msg
* error message
* @return knot vector is / is not valid
*/
public boolean do_check_knots(final Knotvector knots, final String msg) {
// DONE
final int status = knots.validate();
if (status > 0) {
do_nurbserror(status);
if (renderhints.errorchecking != NurbsConsts.N_NOMSG)
knots.show(msg);
}
return (status > 0) ? false : true;
}
/**
* Draw a curve
*
* @param o_nurbscurve
* NURBS curve object
*/
public void do_nurbscurve(final O_nurbscurve o_nurbscurve) {
// DONE
if (inCurve <= 0) {
bgncurve();
inCurve = 2;
}
if (o_nurbscurve.used) {
do_nurbserror(23);
isDataValid = 0;
return;
} else
o_nurbscurve.used = true;
if (currentCurve.curvetype == CT_NONE) {
currentCurve.curvetype = CT_NURBSCURVE;
} else if (currentCurve.curvetype != CT_NURBSCURVE) {
do_nurbserror(24);
isDataValid = 0;
return;
}
// it was necessary to overcome problem with pointer to pointer here
// if(!o_nurbscurve.equals(nextNurbscurve)){
if (!o_nurbscurve.equals(currentCurve.o_nurbscurve)) {
// isCurveModified = 1;
currentCurve.o_nurbscurve = o_nurbscurve;
// nextNurbscurve=o_nurbscurve;
}
nextNurbscurve = o_nurbscurve.next;
if (!currentCurve.equals(o_nurbscurve.owner)) {
// isCurveModified = 1;
o_nurbscurve.owner = currentCurve;
}
/**
if (o_nurbscurve.owner == null) {
isCurveModified = 1;
} */
if (inCurve == 2) {
endcurve();
}
}
/**
* Draw NURBS surface
*
* @param o_nurbssurface
* NURBS surface object
*/
public void do_nurbssurface(final O_nurbssurface o_nurbssurface) {
// DONE
if (inSurface <= 0) {
bgnsurface();
inSurface = 2;
}
if (o_nurbssurface.used) {
do_nurbserror(25);
isDataValid = 0;
return;
} else
o_nurbssurface.used = true;
// Always true, instances of diff classes are compared: if (!o_nurbssurface.equals(nextNurbscurve)) {
// isSurfaceModified = true;
// nextNurbssurface=o_nurbssurface;
currentSurface.o_nurbssurface = o_nurbssurface;
// }
if (!currentSurface.equals(o_nurbssurface.owner)) {
// isSurfaceModified = true;
o_nurbssurface.owner = currentSurface;
}
// nextNurbssurface = o_nurbssurface.next;
if (inSurface == 2)
endsurface();
}
/**
* (Re)Inicialize maps
*/
public void redefineMaps() {
// DONE
maplist.initialize();
}
/**
* Define a map of given properties
*
* @param type
* map type
* @param rational
* is rational
* @param ncoords
* number of control point coordinates
*/
public void defineMap(final int type, final int rational, final int ncoords) {
// DONE
maplist.define(type, rational, ncoords);
}
/**
* Set NURBS property
*
* @param type
* property type
* @param tag
* property tag
* @param value
* property value
*/
public void setnurbsproperty(final int type, final int tag, final float value) {
// DONE
final Mapdesc mapdesc = maplist.locate(type);
if (mapdesc == null) {
do_nurbserror(35);
return;
}
if (!mapdesc.isProperty(tag)) {
do_nurbserror(26);
return;
}
final Property prop = new Property(type, tag, value);
thread("do_setnurbsproperty2", prop);
}
/**
* Set parameters of existing property
*
* @param prop
* property
*/
public void do_setnurbsproperty2(final Property prop) {
final Mapdesc mapdesc = maplist.find(prop.type);
mapdesc.setProperty(prop.tag, prop.value);
}
/**
* Set given property to rendering hints
*
* @param prop
* property to be set
*/
public void do_setnurbsproperty(final Property prop) {
// DONE
renderhints.setProperty(prop);
// TODO freeproperty?
}
/**
* Sets wheteher we use domain distance sampling
*
* @param i
* domain distance sampling flag
*/
public void set_is_domain_distance_sampling(final int i) {
// DONE
subdivider.set_is_domain_distance_sampling(i);
}
/**
* Begin new surface
*/
public void bgnsurface() {
// DONE
final O_surface o_surface = new O_surface();
// TODO nuid
// System.out.println("TODO glunurbs.bgnsurface nuid");
thread("do_bgnsurface", o_surface);
}
/**
* End current surface
*/
public void endsurface() {
// DONE
thread2("do_endsurface");
}
/**
* End surface trimming
*/
private void endtrim() {
// TODO Auto-generated method stub
// System.out.println("TODO glunurbs.endtrim");
}
/**
* Make NURBS surface
*
* @param sknot_count
* number of knots in s direction
* @param sknot
* knot vector in s direction
* @param tknot_count
* number of knots in t direction
* @param tknot
* knot vector in t direction
* @param s_stride
* number of coords of control points in s direction
* @param t_stride
* number of coords of control points in t direction
* @param ctlarray
* control points
* @param sorder
* order of curve in s direction
* @param torder
* order of curve in t direction
* @param type
* NURBS surface type (rational,...)
*/
public void nurbssurface(final int sknot_count, final float[] sknot, final int tknot_count,
final float[] tknot, final int s_stride, final int t_stride, final float[] ctlarray,
final int sorder, final int torder, final int type) {
// DONE
final Mapdesc mapdesc = maplist.locate(type);
if (mapdesc == null) {
do_nurbserror(35);
isDataValid = 0;
return;
}
if (s_stride < 0 || t_stride < 0) {
do_nurbserror(34);
isDataValid = 0;
return;
}
final Knotvector sknotvector = new Knotvector(sknot_count, s_stride, sorder,
sknot);
if (!do_check_knots(sknotvector, "surface"))
return;
final Knotvector tknotvector = new Knotvector(tknot_count, t_stride, torder,
tknot);
if (!do_check_knots(tknotvector, "surface"))
return;
final O_nurbssurface o_nurbssurface = new O_nurbssurface(type);
o_nurbssurface.bezier_patches = new Quilt(mapdesc);
final CArrayOfFloats ctrlarr = new CArrayOfFloats(ctlarray);
o_nurbssurface.bezier_patches.toBezier(sknotvector, tknotvector,
ctrlarr, mapdesc.getNCoords());
thread("do_nurbssurface", o_nurbssurface);
}
}