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source: branches/HeuristicLab.Problems.GaussianProcessTuning/ILNumerics.2.14.4735.573/Drawing/Misc/ILClippingData.cs @ 11194

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Last change on this file since 11194 was 9102, checked in by gkronber, 12 years ago
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1	///
2	/// This file is part of ILNumerics Community Edition.
3	///
4	/// ILNumerics Community Edition - high performance computing for applications.
5	/// Copyright (C) 2006 - 2012 Haymo Kutschbach, http://ilnumerics.net
6	///
7	/// ILNumerics Community Edition is free software: you can redistribute it and/or modify
8	/// it under the terms of the GNU General Public License version 3 as published by
9	/// the Free Software Foundation.
10	///
11	/// ILNumerics Community Edition is distributed in the hope that it will be useful,
12	/// but WITHOUT ANY WARRANTY; without even the implied warranty of
13	/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	/// GNU General Public License for more details.
15	///
16	/// You should have received a copy of the GNU General Public License
17	/// along with ILNumerics Community Edition. See the file License.txt in the root
18	/// of your distribution package. If not, see <http://www.gnu.org/licenses/>.
19	///
20	/// In addition this software uses the following components and/or licenses:
21	///
22	/// =================================================================================
23	/// The Open Toolkit Library License
24	///
25	/// Copyright (c) 2006 - 2009 the Open Toolkit library.
26	///
27	/// Permission is hereby granted, free of charge, to any person obtaining a copy
28	/// of this software and associated documentation files (the "Software"), to deal
29	/// in the Software without restriction, including without limitation the rights to
30	/// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
31	/// the Software, and to permit persons to whom the Software is furnished to do
32	/// so, subject to the following conditions:
33	///
34	/// The above copyright notice and this permission notice shall be included in all
35	/// copies or substantial portions of the Software.
36	///
37	/// =================================================================================
38	///
39
40	using System;
41	using System.Collections.Generic;
42	using System.Text;
43	using ILNumerics.Drawing.Misc;
44
45	namespace ILNumerics.Drawing {
46	/// <summary>
47	/// Class holding and managing limits for a 3 dimensional cube
48	/// </summary>
49	public sealed class ILClippingData {
50
51	#region eventing
52	/// <summary>
53	/// fires if the data range have changed
54	/// </summary>
55	public event ILClippingDataChangedEvent Changed;
56	/// <summary>
57	/// called if the limits have changed
58	/// </summary>
59	private void OnChange() {
60	if (m_eventingActive && Changed != null) {
61	Changed ( this, new ClippingChangedEventArgs(this));
62	}
63	m_isDirty = false;
64	}
65	#endregion
66
67	#region attributes
68	private bool m_eventingActive = true;
69	private float m_xMin = float.MaxValue;
70	private float m_yMin = float.MaxValue;
71	private float m_zMin = float.MaxValue;
72	private float m_xMax = float.MinValue;
73	private float m_yMax = float.MinValue;
74	private float m_zMax = float.MinValue;
75	private float m_sphereRadius;
76	private bool m_isDirty = false;
77	private bool m_allowZeroVolume = true;
78	#endregion
79
80	#region properties
81
82	/// <summary>
83	/// the radius of a sphere tightly enclosing the box determined by this clipping data limits (readonly)
84	/// </summary>
85	public float SphereRadius {
86	get {
87	return m_sphereRadius;
88	}
89	}
90	/// <summary>
91	/// minimum value for x axis
92	/// </summary>
93	public float XMin {
94	get {
95	return m_xMin;
96	}
97	set {
98	if (m_xMin != value) {
99	m_isDirty = true;
100	m_xMin = value;
101	if (!m_allowZeroVolume) ensureVolumeNotZero();
102	m_sphereRadius = getSphereRadius();
103	if (m_eventingActive && Changed != null)
104	OnChange();
105	}
106	}
107	}
108	/// <summary>
109	/// minimum value for y axis
110	/// </summary>
111	public float YMin {
112	get {
113	return m_yMin;
114	}
115	set {
116	if (m_yMin != value) {
117	m_isDirty = true;
118	m_yMin = value;
119	if (!m_allowZeroVolume) ensureVolumeNotZero();
120	m_sphereRadius = getSphereRadius();
121	if (m_eventingActive && Changed != null)
122	OnChange();
123	}
124	}
125	}
126	/// <summary>
127	/// minimum value for z axis
128	/// </summary>
129	public float ZMin {
130	get {
131	return m_zMin;
132	}
133	set {
134	if (m_zMin != value) {
135	m_isDirty = true;
136	m_zMin = value;
137	if (!m_allowZeroVolume) ensureVolumeNotZero();
138	m_sphereRadius = getSphereRadius();
139	if (m_eventingActive && Changed != null)
140	OnChange();
141	}
142	}
143	}
144	/// <summary>
145	/// maximum value for x axis
146	/// </summary>
147	public float XMax {
148	get {
149	return m_xMax;
150	}
151	set {
152	if (m_xMax != value) {
153	m_isDirty = true;
154	m_xMax = value;
155	if (!m_allowZeroVolume) ensureVolumeNotZero();
156	m_sphereRadius = getSphereRadius();
157	if (m_eventingActive && Changed != null)
158	OnChange();
159	}
160	}
161	}
162	/// <summary>
163	/// maximum value for y axis
164	/// </summary>
165	public float YMax {
166	get {
167	return m_yMax;
168	}
169	set {
170	if (m_yMax != value) {
171	m_isDirty = true;
172	m_yMax = value;
173	if (!m_allowZeroVolume) ensureVolumeNotZero();
174	m_sphereRadius = getSphereRadius();
175	if (m_eventingActive && Changed != null)
176	OnChange();
177	}
178	}
179	}
180	/// <summary>
181	/// maximum value for z axis
182	/// </summary>
183	public float ZMax {
184	get {
185	return m_zMax;
186	}
187	set {
188	if (m_zMax != value) {
189	m_isDirty = true;
190	m_zMax = value;
191	if (!m_allowZeroVolume) ensureVolumeNotZero();
192	m_sphereRadius = getSphereRadius();
193	if (m_eventingActive && Changed != null)
194	OnChange();
195	}
196	}
197	}
198	/// <summary>
199	/// minimum (coordinate)
200	/// </summary>
201	public ILPoint3Df Min {
202	get {
203	return new ILPoint3Df(XMin,YMin,ZMin);
204	}
205	}
206	/// <summary>
207	/// maximum (coordinate)
208	/// </summary>
209	public ILPoint3Df Max {
210	get {
211	return new ILPoint3Df(XMax,YMax,ZMax);
212	}
213	}
214	/// <summary>
215	/// get center of this clipping range
216	/// </summary>
217	public ILPoint3Df CenterF {
218	get {
219	ILPoint3Df ret;
220	ret.X = (XMax + XMin) / 2.0f;
221	ret.Y = (YMax + YMin) / 2.0f;
222	ret.Z = (ZMax + ZMin) / 2.0f;
223	return ret;
224	}
225	}
226	/// <summary>
227	/// get width (x-direction) of this clipping range
228	/// </summary>
229	public float WidthF {
230	get {
231	return (XMax - XMin);
232	}
233	}
234	/// <summary>
235	/// get height (y-direction) of this clipping range
236	/// </summary>
237	public float HeightF {
238	get {
239	return (YMax - YMin);
240	}
241	}
242	/// <summary>
243	/// get depth (z-direction) of this clipping range
244	/// </summary>
245	public float DepthF {
246	get {
247	return (ZMax - ZMin);
248	}
249	}
250	/// <summary>
251	/// marks the limits as altered, without having fired a changed event yet
252	/// </summary>
253	public bool IsDirty {
254	get {
255	return m_isDirty;
256	}
257	}
258	/// <summary>
259	/// true: this clipping data always ensures a non-zero volume
260	/// </summary>
261	/// <remarks>'NonZeroVolumne' means, non of Depth,Width nor Heigth are allowed to be zero. If some edge of the cube is set to zero, the class expands this edge by 1 in each direction.</remarks>
262	public bool AllowZeroVolume {
263	get {
264	return m_allowZeroVolume;
265	}
266	set {
267	m_allowZeroVolume = value;
268	}
269	}
270	#endregion
271
272	#region public interface
273	/// <summary>
274	/// suspend the firing of events until EventingResume has been called
275	/// </summary>
276	public void EventingSuspend() {
277	m_eventingActive = false;
278	m_isDirty = false;
279	}
280	/// <summary>
281	/// Resume previously suspended eventing. Start sending events again.
282	/// </summary>
283	public void EventingResume() {
284	m_eventingActive = true;
285	if (m_isDirty && Changed != null) {
286	OnChange();
287	}
288	}
289	/// <summary>
290	/// enable eventing without sending pending events
291	/// </summary>
292	public void EventingStart() {
293	m_eventingActive = true;
294	m_isDirty = false;
295	}
296	/// <summary>
297	/// update ranges for this object with union of both ranges.
298	/// </summary>
299	/// <param name="clipData">clipping ranges to create union with</param>
300	public void Update (ILClippingData clipData) {
301	if (clipData.XMin < XMin) { m_isDirty = true; m_xMin = clipData.XMin; }
302	if (clipData.YMin < YMin) { m_isDirty = true; m_yMin = clipData.YMin; }
303	if (clipData.ZMin < ZMin) { m_isDirty = true; m_zMin = clipData.ZMin; }
304	if (clipData.XMax > XMax) { m_isDirty = true; m_xMax = clipData.XMax; }
305	if (clipData.YMax > YMax) { m_isDirty = true; m_yMax = clipData.YMax; }
306	if (clipData.ZMax > ZMax) { m_isDirty = true; m_zMax = clipData.ZMax; }
307	if (!m_allowZeroVolume) ensureVolumeNotZero();
308	m_sphereRadius = getSphereRadius();
309	if (m_isDirty && m_eventingActive && Changed != null)
310	OnChange();
311	}
312	/// <summary>
313	/// update ranges for this object with point coords for specific axes
314	/// </summary>
315	/// <param name="point">point with coords to update ranges with</param>
316	/// <param name="updateBitFlags">bitflag combination to specify axis to be recognized: 1,2,4 -> x,y,z</param>
317	public void Update (ILPoint3Df point, int updateBitFlags) {
318	if ((updateBitFlags & 1) != 0) {
319	if (point.X < XMin) { m_isDirty = true; m_xMin = point.X; }
320	if (point.X > XMax) { m_isDirty = true; m_xMax = point.X; }
321	}
322	if ((updateBitFlags & 2) != 0) {
323	if (point.Y < YMin) { m_isDirty = true; m_yMin = point.Y; }
324	if (point.Y > YMax) { m_isDirty = true; m_yMax = point.Y; }
325	}
326	if ((updateBitFlags & 4) != 0) {
327	if (point.Z < ZMin) { m_isDirty = true; m_zMin = point.Z; }
328	if (point.Z > ZMax) { m_isDirty = true; m_zMax = point.Z; }
329	}
330	if (!m_allowZeroVolume) ensureVolumeNotZero();
331	m_sphereRadius = getSphereRadius();
332	if (m_isDirty && m_eventingActive && Changed != null)
333	OnChange();
334	}
335	/// <summary>
336	/// update clipping data for this object with union of this and rectangle specified
337	/// </summary>
338	/// <param name="luCorner">left upper corner</param>
339	/// <param name="rbCorner">right lower corner</param>
340	public void Update (ILPoint3Df luCorner, ILPoint3Df rbCorner) {
341	bool oldeventState = m_eventingActive;
342	m_eventingActive = false;
343	Update(luCorner,7);
344	m_eventingActive = oldeventState;
345	Update(rbCorner,7);
346	}
347	public void Update (ILPoint3Df center, float zoomFactor) {
348	if (zoomFactor == 1.0f && center == CenterF) return;
349	m_isDirty = true;
350	float s = WidthF * zoomFactor / 2;
351	m_xMin = center.X - s;
352	m_xMax = center.X + s;
353	s = HeightF * zoomFactor / 2;
354	m_yMin = center.Y - s;
355	m_yMax = center.Y + s;
356	s = DepthF * zoomFactor / 2;
357	m_zMin = center.Z - s;
358	m_zMax = center.Z + s;
359	if (!m_allowZeroVolume) ensureVolumeNotZero();
360	m_sphereRadius = getSphereRadius();
361	if (m_eventingActive && Changed != null)
362	OnChange();
363	}
364	/// <summary>
365	/// Set clipping limits to volume inside the box specified
366	/// </summary>
367	/// <param name="lunCorner">left-upper-near corner of the volume box</param>
368	/// <param name="rbfCorner">right-bottom-far corner of the volume box</param>
369	public void Set(ILPoint3Df lunCorner, ILPoint3Df rbfCorner) {
370	m_isDirty = true;
371	m_xMin = Math.Min(lunCorner.X,rbfCorner.X);
372	m_xMax = Math.Max(lunCorner.X,rbfCorner.X);
373	m_yMin = Math.Min(lunCorner.Y,rbfCorner.Y);
374	m_yMax = Math.Max(lunCorner.Y,rbfCorner.Y);
375	m_zMin = Math.Min(lunCorner.Z,rbfCorner.Z);
376	m_zMax = Math.Max(lunCorner.Z,rbfCorner.Z);
377	if (!m_allowZeroVolume) ensureVolumeNotZero();
378	m_sphereRadius = getSphereRadius();
379	if (m_eventingActive && Changed != null)
380	OnChange();
381	}
382	/// <summary>
383	/// reset this clipping range to initial (all empty)
384	/// </summary>
385	public void Reset() {
386	m_xMin = float.MaxValue;
387	m_yMin = float.MaxValue;
388	m_zMin = float.MaxValue;
389	m_xMax = float.MinValue;
390	m_yMax = float.MinValue;
391	m_zMax = float.MinValue;
392	m_isDirty = true;
393	if (m_eventingActive && Changed != null)
394	OnChange();
395	}
396	/// <summary>
397	/// copy this from other clipping data
398	/// </summary>
399	/// <param name="m_clippingData"></param>
400	internal void CopyFrom(ILClippingData m_clippingData) {
401	m_xMin = m_clippingData.XMin;
402	m_yMin = m_clippingData.YMin;
403	m_zMin = m_clippingData.ZMin;
404	m_xMax = m_clippingData.XMax;
405	m_yMax = m_clippingData.YMax;
406	m_zMax = m_clippingData.ZMax;
407	if (!m_allowZeroVolume) ensureVolumeNotZero();
408	m_sphereRadius = getSphereRadius();
409	m_isDirty = true;
410	if (m_eventingActive && Changed != null)
411	OnChange();
412	}
413	/// <summary>
414	/// stretch clipping region to unit cube [0 1][0 1][0 1]
415	/// </summary>
416	/// <returns></returns>
417	public ILPoint3Df ScaleToUnitCube () {
418	ILPoint3Df ret = new ILPoint3Df();
419	float a = WidthF;
420	if (a != 0.0f) ret.X = 1 / a;
421	else ret.X = 0.0f;
422
423	a = HeightF;
424	if (a != 0.0f) ret.Y = 1 / a;
425	else ret.Y = 0.0f;
426
427	a = DepthF;
428	if (a != 0.0f) ret.Z = 1 / a;
429	else ret.Z = 0.0f;
430	return ret;
431	}
432	/// <summary>
433	/// offset centering scaled unit cube to zero: [-0.5 0.5][-0.5 0.5][-0.5 0.5]
434	/// </summary>
435	/// <returns></returns>
436	public ILPoint3Df CenterToUnitCube() {
437	ILPoint3Df a = ScaleToUnitCube();
438	ILPoint3Df b = new ILPoint3Df();
439	b.X = -0.5f - a.X * XMin;
440	b.Y = -0.5f - a.Y * YMin;
441	if (ZMin < ZMax)
442	b.Z = (-0.5f - a.Z * ZMin);
443	else b.Z = 0.0f;
444	return b;
445	}
446	/// <summary>
447	/// creates clone of this clipping data
448	/// </summary>
449	/// <returns>clone</returns>
450	public ILClippingData Clone() {
451	ILClippingData ret = new ILClippingData();
452	ret.Update(this);
453	return ret;
454	}
455	/// <summary>
456	/// Map coordinat from unit cube space [-0.5..0.5] into the space limited by this clipping data
457	/// </summary>
458	/// <param name="x">x coordinate (unit cube space: -0.5 ... 0.5)</param>
459	/// <param name="y">y coordinate (unit cube space: -0.5 ... 0.5)</param>
460	/// <param name="z">z coordinate (unit cube space: -0.5 ... 0.5)</param>
461	/// <returns></returns>
462	public ILPoint3Df Map(float x, float y, float z) {
463	ILPoint3Df ret;
464	ret.X = (x + 0.5f) * (m_xMax-m_xMin) + m_xMin;
465	ret.Y = (y + 0.5f) * (m_yMax-m_yMin) + m_yMin;
466	ret.Z = (z + 0.5f) * (m_zMax-m_zMin) + m_zMin;
467	//if (!m_allowZeroVolume) ensureVolumeNotZero();
468	return ret;
469	}
470
471	public override string ToString() {
472	return String.Format("Min:{0} Max:{1}",Min,Max);
473	}
474	/// <summary>
475	/// Expand/shrink all those edges, not touched by the given line
476	/// </summary>
477	/// <param name="nearLineEnd">near line point</param>
478	/// <param name="farLineEnd">far line point</param>
479	/// <param name="offset">multiplicator, shrink-/expand value</param>
480	public void GetZoomParameter(ILPoint3Df nearLineEnd, ILPoint3Df farLineEnd, float offset,
481	out ILPoint3Df minCorner, out ILPoint3Df maxCorner) {
482	// we determine, if the side is touched by the line.
483	// if 'yes': the side is skipped (its limit/position are kept)
484	// if 'no': the side is moved towards/away from center
485	minCorner = this.Min;
486	maxCorner = this.Max;
487	float sX, sY, sZ;
488	float lamb;
489	float aX = nearLineEnd.X - farLineEnd.X;
490	float aY = nearLineEnd.Y - farLineEnd.Y;
491	float aZ = nearLineEnd.Z - farLineEnd.Z;
492	float offX = WidthF * (offset/2.0f);
493	float offY = HeightF * (offset/2.0f);
494	float offZ = DepthF * (offset/2.0f);
495	#region front side
496	lamb = (m_yMin - nearLineEnd.Y) / aY;
497	sX = nearLineEnd.X + lamb * aX;
498	sZ = nearLineEnd.Z + lamb * aZ;
499	if (sX > m_xMax \|\| sX < m_xMin \|\| sZ > m_zMax \|\| sZ < m_zMin) {
500	minCorner.Y += offY;
501	}
502	#endregion
503	#region right side
504	lamb = (m_xMax - nearLineEnd.X) / aX;
505	sY = nearLineEnd.Y + lamb * aY;
506	sZ = nearLineEnd.Z + lamb * aZ;
507	if (sY > m_yMax \|\| sY < m_yMin \|\| sZ > m_zMax \|\| sZ < m_zMin) {
508	maxCorner.X -= offX;
509	}
510	#endregion
511	#region back side
512	lamb = (m_yMax - nearLineEnd.Y) / aY;
513	sX = nearLineEnd.X + lamb * aX;
514	sZ = nearLineEnd.Z + lamb * aZ;
515	if (sX > m_xMax \|\| sX < m_xMin \|\| sZ > m_zMax \|\| sZ < m_zMin) {
516	maxCorner.Y -= offY;
517	}
518	#endregion
519	#region left side
520	lamb = (m_xMin - nearLineEnd.X) / aX;
521	sY = nearLineEnd.Y + lamb * aY;
522	sZ = nearLineEnd.Z + lamb * aZ;
523	if (sY > m_yMax \|\| sY < m_yMin \|\| sZ > m_zMax \|\| sZ < m_zMin) {
524	minCorner.X += offX;
525	}
526	#endregion
527	#region top side
528	lamb = (m_zMax - nearLineEnd.Z) / aZ;
529	sX = nearLineEnd.X + lamb * aX;
530	sY = nearLineEnd.Y + lamb * aY;
531	if (sY > m_yMax \|\| sY < m_yMin \|\| sX > m_xMax \|\| sX < m_xMin) {
532	maxCorner.Z -= offZ;
533	}
534	#endregion
535	#region bottom side
536	lamb = (m_zMin - nearLineEnd.Z) / aZ;
537	sX = nearLineEnd.X + lamb * aX;
538	sY = nearLineEnd.Y + lamb * aY;
539	if (sY > m_yMax \|\| sY < m_yMin \|\| sX > m_xMax \|\| sX < m_xMin) {
540	minCorner.Z += offZ;
541	}
542	#endregion
543	#region translate: move line to cross middle of view cube
544	ILPoint3Df rQ = CenterF;
545	sX = rQ.X - nearLineEnd.X;
546	sY = rQ.Y - nearLineEnd.Y;
547	sZ = rQ.Z - nearLineEnd.Z;
548	lamb = (aX * sX + aY * sY + aZ * sZ) / (aX * aX + aY * aY + aZ * aZ);
549	offX = rQ.X - (nearLineEnd.X + lamb * aX);
550	offY = rQ.Y - (nearLineEnd.Y + lamb * aY);
551	offZ = rQ.Z - (nearLineEnd.Z + lamb * aZ);
552	minCorner.X -= offX;
553	minCorner.Y -= offY;
554	minCorner.Z -= offZ;
555	maxCorner.X -= offX;
556	maxCorner.Y -= offY;
557	maxCorner.Z -= offZ;
558	#endregion
559	}
560
561	#endregion
562
563	#region private helper
564
565	private float getSphereRadius() {
566	return ((Max - Min) / 2f).GetLength();
567	}
568
569	/// <summary>
570	/// Ensure that this clipping data has valid length for all dimensions [deprecated]
571	/// </summary>
572	/// <remarks>If the length of the clipping cube is infinity for any dimension,
573	/// that dimension is set to a range of -0.5...0.5.
574	/// <para>This function is to be called by custom graphs which create their
575	/// size <b>relative</b> to the size of the clipping container. Those
576	/// graphs will need a valid container size and may call this function in the
577	/// constructor.</para></remarks>
578	/// <returns>true if the length in any dimension had to be corrected (set to 1.0), false otherwise.</returns>
579	private bool EnsureValidSize() {
580	bool change = false;
581	if (float.IsInfinity(WidthF)) {
582	change = true;
583	m_xMin = -0.5f;
584	m_xMax = 0.5f;
585	}
586	if (float.IsInfinity(HeightF)) {
587	change = true;
588	m_yMin = -0.5f;
589	m_yMax = 0.5f;
590	}
591	if (float.IsInfinity(DepthF)) {
592	change = true;
593	m_zMin = -0.5f;
594	m_zMax = 0.5f;
595	}
596	if (change && m_eventingActive && Changed != null) {
597	OnChange();
598	}
599	return change;
600	}
601
602	private void ensureVolumeNotZero() {
603	if (HeightF == 0) {
604	m_isDirty = true;
605	m_yMin = m_yMin - 1f;
606	m_yMax = m_yMin + 2f;
607	}
608	if (WidthF == 0) {
609	m_isDirty = true;
610	m_xMin = m_xMin - 1f;
611	m_xMax = m_xMin + 2f;
612	}
613	if (DepthF == 0) {
614	m_isDirty = true;
615	m_zMin = m_zMin - 1f;
616	m_zMax = m_zMin + 2f;
617	}
618	}
619	#endregion
620
621	#region operator overloads
622	/// <summary>
623	/// Equalty operator overload, true if both cubes span the same region in 3D space
624	/// </summary>
625	/// <param name="limit1">cube 1</param>
626	/// <param name="limit2">cube 2</param>
627	/// <returns>true if both cubes span the same 3D space, false otherwise</returns>
628	public static bool operator == (ILClippingData limit1, ILClippingData limit2) {
629	return (limit1.m_xMax == limit2.m_xMax &&
630	limit1.m_yMax == limit2.m_yMax &&
631	limit1.m_zMax == limit2.m_zMax &&
632	limit1.m_xMin == limit2.m_xMin &&
633	limit1.m_yMin == limit2.m_yMin &&
634	limit1.m_zMin == limit2.m_zMin);
635	}
636	/// <summary>
637	/// unequalty operator
638	/// </summary>
639	/// <param name="limit1">cube 1</param>
640	/// <param name="limit2">cube 2</param>
641	/// <returns>false if both cubes span the same 3D space, true otherwise</returns>
642	public static bool operator !=(ILClippingData limit1, ILClippingData limit2) {
643	return (limit1.m_xMax != limit2.m_xMax \|\|
644	limit1.m_yMax != limit2.m_yMax \|\|
645	limit1.m_zMax != limit2.m_zMax \|\|
646	limit1.m_xMin != limit2.m_xMin \|\|
647	limit1.m_yMin != limit2.m_yMin \|\|
648	limit1.m_zMin != limit2.m_zMin);
649	}
650	/// <summary>
651	/// Returns hash code for this ILClippingData
652	/// </summary>
653	/// <returns>hash code</returns>
654	public override int GetHashCode() {
655	return base.GetHashCode();
656	}
657	/// <summary>
658	/// Compares to cube objects
659	/// </summary>
660	/// <param name="obj"></param>
661	/// <returns>true if obj references this class instance, false otherwise</returns>
662	public override bool Equals(object obj) {
663	return base.Equals(obj);
664	}
665	#endregion
666
667	}
668	}

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