Welcome to mirror list, hosted at ThFree Co, Russian Federation.

KX_SG_NodeRelationships.cpp « Ketsji « gameengine « source - git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
blob: 16529a91471196f46aa22fe521037d053786cb95 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
/**
 * $Id$
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

#include "KX_SG_NodeRelationships.h"


/**
 * Implementation of classes defined in KX_SG_NodeRelationships.h
 */

/** 
 * first of all KX_NormalParentRelation
 */

	KX_NormalParentRelation *
KX_NormalParentRelation::
New(
) {
	return new KX_NormalParentRelation();
}		

	void
KX_NormalParentRelation::
UpdateChildCoordinates(
	SG_Spatial * child,
	const SG_Spatial * parent
){
	assert(child != NULL);

	// This way of accessing child coordinates is a bit cumbersome
	// be nice to have non constant reference access to these values.

	const MT_Vector3 & child_scale = child->GetLocalScale();
	const MT_Point3 & child_pos = child->GetLocalPosition();
	const MT_Matrix3x3 & child_rotation = child->GetLocalOrientation();

	// the childs world locations which we will update.	
	
	MT_Vector3 child_w_scale;
	MT_Point3 child_w_pos;
	MT_Matrix3x3 child_w_rotation;
		
	if (parent) {

		const MT_Vector3 & p_world_scale = parent->GetWorldScaling();
		const MT_Point3 & p_world_pos = parent->GetWorldPosition();
		const MT_Matrix3x3 & p_world_rotation = parent->GetWorldOrientation();

		child_w_scale = p_world_scale * child_scale;
		child_w_rotation = p_world_rotation * child_rotation;

		child_w_pos = p_world_pos + p_world_scale * 
			(p_world_rotation * child_pos);
	} else {

		child_w_scale = child_scale;
		child_w_pos = child_pos;
		child_w_rotation = child_rotation;
	}

	child->SetWorldScale(child_w_scale);
	child->SetWorldPosition(child_w_pos);
	child->SetWorldOrientation(child_w_rotation);
}

	SG_ParentRelation *
KX_NormalParentRelation::
NewCopy(
){
	return new KX_NormalParentRelation();
}

KX_NormalParentRelation::
~KX_NormalParentRelation(
){
	//nothing to do
}


KX_NormalParentRelation::
KX_NormalParentRelation(
){
	// nothing to do
}

/** 
 * Next KX_VertexParentRelation
 */


	KX_VertexParentRelation *
KX_VertexParentRelation::
New(
){
	return new KX_VertexParentRelation();
}
		
/** 
 * Method inherited from KX_ParentRelation
 */

	void
KX_VertexParentRelation::
UpdateChildCoordinates(
	SG_Spatial * child,
	const SG_Spatial * parent
){

	assert(child != NULL);

	const MT_Vector3 & child_scale = child->GetLocalScale();
	const MT_Point3 & child_pos = child->GetLocalPosition();
	const MT_Matrix3x3 & child_rotation = child->GetLocalOrientation();

	// the childs world locations which we will update.	
	
	MT_Vector3 child_w_scale;
	MT_Point3 child_w_pos;
	MT_Matrix3x3 child_w_rotation;
		
	if (parent) {

		// This is a vertex parent so we do not inherit orientation 
		// information.

		const MT_Vector3 & p_world_scale = parent->GetWorldScaling();
		const MT_Point3 & p_world_pos = parent->GetWorldPosition();
		const MT_Matrix3x3 & p_world_rotation = parent->GetWorldOrientation();

		child_w_scale = child_scale;
		child_w_rotation = child_rotation;
		child_w_pos = p_world_pos + child_pos;

	} else {

		child_w_scale = child_scale;
		child_w_pos = child_pos;
		child_w_rotation = child_rotation;
	}

	child->SetWorldScale(child_w_scale);
	child->SetWorldPosition(child_w_pos);
	child->SetWorldOrientation(child_w_rotation);
}

/** 
 * Method inherited from KX_ParentRelation
 */

	SG_ParentRelation *
KX_VertexParentRelation::
NewCopy(
){
	return new KX_VertexParentRelation();
};

KX_VertexParentRelation::
~KX_VertexParentRelation(
){
	//nothing to do
}


KX_VertexParentRelation::
KX_VertexParentRelation(
){
	//nothing to do
}


/**
 * Slow parent relationship
 */

	KX_SlowParentRelation *
KX_SlowParentRelation::
New(
	MT_Scalar relaxation
){
	return new 	KX_SlowParentRelation(relaxation);
}	

/** 
 * Method inherited from KX_ParentRelation
 */

	void
KX_SlowParentRelation::
UpdateChildCoordinates(
	SG_Spatial * child,
	const SG_Spatial * parent
){
	assert(child != NULL);

	const MT_Vector3 & child_scale = child->GetLocalScale();
	const MT_Point3 & child_pos = child->GetLocalPosition();
	const MT_Matrix3x3 & child_rotation = child->GetLocalOrientation();

	// the childs world locations which we will update.	
	
	MT_Vector3 child_w_scale;
	MT_Point3 child_w_pos;
	MT_Matrix3x3 child_w_rotation;
		
	if (parent) {

		// This is a slow parent relation
		// first compute the normal child world coordinates.

		MT_Vector3 child_n_scale;
		MT_Point3 child_n_pos;
		MT_Matrix3x3 child_n_rotation;

		const MT_Vector3 & p_world_scale = parent->GetWorldScaling();
		const MT_Point3 & p_world_pos = parent->GetWorldPosition();
		const MT_Matrix3x3 & p_world_rotation = parent->GetWorldOrientation();

		child_n_scale = p_world_scale * child_scale;
		child_n_rotation = p_world_rotation * child_rotation;

		child_n_pos = p_world_pos + p_world_scale * 
			(p_world_rotation * child_pos);


		if (m_initialized) {

			// get the current world positions

			child_w_scale = child->GetWorldScaling();
			child_w_pos = child->GetWorldPosition();
			child_w_rotation = child->GetWorldOrientation();	

			// now 'interpolate' the normal coordinates with the last 
			// world coordinates to get the new world coordinates.

			// problem 1:
			// The child world scale needs to be initialized in some way for this 
			// to make sense
			// problem 2:
			// This is way of doing interpolation is nonsense

			int i;

			MT_Scalar weight = MT_Scalar(1)/(m_relax + 1);
			for (i=0;i <3 ;i++) {
				child_w_scale[i] = (m_relax * child_w_scale[i] + child_n_scale[i]) * weight;
				child_w_pos[i] = (m_relax * child_w_pos[i] + child_n_pos[i]) * weight;
				child_w_rotation[0][i] = (m_relax * child_w_rotation[0][i] + child_n_rotation[0][i]) * weight;
				child_w_rotation[1][i] = (m_relax * child_w_rotation[1][i] + child_n_rotation[1][i]) * weight;
				child_w_rotation[2][i] = (m_relax * child_w_rotation[2][i] + child_n_rotation[2][i]) * weight;
			}
		} else {
			child_w_scale = child_n_scale;
			child_w_pos = child_n_pos;
			child_w_rotation = child_n_rotation;
			m_initialized = true;
		}
			
	} else {

		child_w_scale = child_scale;
		child_w_pos = child_pos;
		child_w_rotation = child_rotation;
	}

	child->SetWorldScale(child_w_scale);
	child->SetWorldPosition(child_w_pos);
	child->SetWorldOrientation(child_w_rotation);
}

/** 
 * Method inherited from KX_ParentRelation
 */

	SG_ParentRelation *
KX_SlowParentRelation::
NewCopy(
){
	return new 	KX_SlowParentRelation(m_relax);
}

KX_SlowParentRelation::
KX_SlowParentRelation(
	MT_Scalar relaxation
):
	m_relax(relaxation),
	m_initialized(false)
{
	//nothing to do
}

KX_SlowParentRelation::
~KX_SlowParentRelation(
){
	//nothing to do
}