1 // animation.cxx - classes to manage model animation.
2 // Written by David Megginson, started 2002.
4 // This file is in the Public Domain, and comes with no warranty.
7 #include <string.h> // for strcmp()
14 #include <simgear/math/interpolater.hxx>
15 #include <simgear/props/condition.hxx>
16 #include <simgear/props/props.hxx>
17 #include <simgear/math/sg_random.h>
19 #include "animation.hxx"
20 #include "custtrans.hxx"
21 #include "personality.hxx"
24 ////////////////////////////////////////////////////////////////////////
25 // Static utility functions.
26 ////////////////////////////////////////////////////////////////////////
29 * Set up the transform matrix for a spin or rotation.
32 set_rotation (sgMat4 &matrix, double position_deg,
33 sgVec3 ¢er, sgVec3 &axis)
35 float temp_angle = -position_deg * SG_DEGREES_TO_RADIANS ;
37 float s = (float) sin ( temp_angle ) ;
38 float c = (float) cos ( temp_angle ) ;
39 float t = SG_ONE - c ;
41 // axis was normalized at load time
42 // hint to the compiler to put these into FP registers
47 matrix[0][0] = t * x * x + c ;
48 matrix[0][1] = t * y * x - s * z ;
49 matrix[0][2] = t * z * x + s * y ;
50 matrix[0][3] = SG_ZERO;
52 matrix[1][0] = t * x * y + s * z ;
53 matrix[1][1] = t * y * y + c ;
54 matrix[1][2] = t * z * y - s * x ;
55 matrix[1][3] = SG_ZERO;
57 matrix[2][0] = t * x * z - s * y ;
58 matrix[2][1] = t * y * z + s * x ;
59 matrix[2][2] = t * z * z + c ;
60 matrix[2][3] = SG_ZERO;
62 // hint to the compiler to put these into FP registers
67 matrix[3][0] = x - x*matrix[0][0] - y*matrix[1][0] - z*matrix[2][0];
68 matrix[3][1] = y - x*matrix[0][1] - y*matrix[1][1] - z*matrix[2][1];
69 matrix[3][2] = z - x*matrix[0][2] - y*matrix[1][2] - z*matrix[2][2];
70 matrix[3][3] = SG_ONE;
74 * Set up the transform matrix for a translation.
77 set_translation (sgMat4 &matrix, double position_m, sgVec3 &axis)
80 sgScaleVec3(xyz, axis, position_m);
81 sgMakeTransMat4(matrix, xyz);
85 * Set up the transform matrix for a scale operation.
88 set_scale (sgMat4 &matrix, double x, double y, double z)
90 sgMakeIdentMat4( matrix );
97 * Recursively process all kids to change the alpha values
100 change_alpha( ssgBase *_branch, float _blend )
104 for (i = 0; i < ((ssgBranch *)_branch)->getNumKids(); i++)
105 change_alpha( ((ssgBranch *)_branch)->getKid(i), _blend );
107 if ( !_branch->isAKindOf(ssgTypeLeaf())
108 && !_branch->isAKindOf(ssgTypeVtxTable())
109 && !_branch->isAKindOf(ssgTypeVTable()) )
112 int num_colors = ((ssgLeaf *)_branch)->getNumColours();
113 // unsigned int select_ = (_blend == 1.0) ? false : true;
115 for (i = 0; i < num_colors; i++)
117 // ((ssgSelector *)_branch)->select( select_ );
118 float *color = ((ssgLeaf *)_branch)->getColour(i);
124 * Modify property value by step and scroll settings in texture translations
127 apply_mods(double property, double step, double scroll)
132 double scrollval = 0.0;
134 // calculate scroll amount (for odometer like movement)
135 double remainder = step - fmod(fabs(property), step);
136 if (remainder < scroll) {
137 scrollval = (scroll - remainder) / scroll * step;
140 // apply stepping of input value
142 modprop = ((floor(property/step) * step) + scrollval);
144 modprop = ((ceil(property/step) * step) + scrollval);
153 * Read an interpolation table from properties.
155 static SGInterpTable *
156 read_interpolation_table (SGPropertyNode_ptr props)
158 SGPropertyNode_ptr table_node = props->getNode("interpolation");
159 if (table_node != 0) {
160 SGInterpTable * table = new SGInterpTable();
161 vector<SGPropertyNode_ptr> entries = table_node->getChildren("entry");
162 for (unsigned int i = 0; i < entries.size(); i++)
163 table->addEntry(entries[i]->getDoubleValue("ind", 0.0),
164 entries[i]->getDoubleValue("dep", 0.0));
173 ////////////////////////////////////////////////////////////////////////
174 // Implementation of SGAnimation
175 ////////////////////////////////////////////////////////////////////////
177 // Initialize the static data member
178 double SGAnimation::sim_time_sec = 0.0;
179 SGPersonalityBranch *SGAnimation::current_object = 0;
181 SGAnimation::SGAnimation (SGPropertyNode_ptr props, ssgBranch * branch)
184 _branch->setName(props->getStringValue("name", 0));
185 if ( props->getBoolValue( "enable-hot", true ) ) {
186 _branch->setTraversalMaskBits( SSGTRAV_HOT );
188 _branch->clrTraversalMaskBits( SSGTRAV_HOT );
192 SGAnimation::~SGAnimation ()
202 SGAnimation::update()
208 SGAnimation::restore()
214 ////////////////////////////////////////////////////////////////////////
215 // Implementation of SGNullAnimation
216 ////////////////////////////////////////////////////////////////////////
218 SGNullAnimation::SGNullAnimation (SGPropertyNode_ptr props)
219 : SGAnimation(props, new ssgBranch)
223 SGNullAnimation::~SGNullAnimation ()
229 ////////////////////////////////////////////////////////////////////////
230 // Implementation of SGRangeAnimation
231 ////////////////////////////////////////////////////////////////////////
233 SGRangeAnimation::SGRangeAnimation (SGPropertyNode *prop_root,
234 SGPropertyNode_ptr props)
235 : SGAnimation(props, new ssgRangeSelector),
236 _min(0.0), _max(0.0), _min_factor(1.0), _max_factor(1.0),
239 SGPropertyNode_ptr node = props->getChild("condition");
241 _condition = sgReadCondition(prop_root, node);
245 node = props->getChild( "min-factor" );
247 _min_factor = props->getFloatValue("min-factor", 1.0);
249 node = props->getChild( "max-factor" );
251 _max_factor = props->getFloatValue("max-factor", 1.0);
253 node = props->getChild( "min-property" );
255 _min_prop = (SGPropertyNode *)prop_root->getNode(node->getStringValue(), true);
256 ranges[0] = _min_prop->getFloatValue() * _min_factor;
258 _min = props->getFloatValue("min-m", 0);
259 ranges[0] = _min * _min_factor;
261 node = props->getChild( "max-property" );
263 _max_prop = (SGPropertyNode *)prop_root->getNode(node->getStringValue(), true);
264 ranges[1] = _max_prop->getFloatValue() * _max_factor;
266 _max = props->getFloatValue("max-m", 0);
267 ranges[1] = _max * _max_factor;
269 ((ssgRangeSelector *)_branch)->setRanges(ranges, 2);
272 SGRangeAnimation::~SGRangeAnimation ()
277 SGRangeAnimation::update()
280 if ( _condition == 0 || _condition->test() ) {
281 if (_min_prop != 0) {
282 ranges[0] = _min_prop->getFloatValue() * _min_factor;
284 ranges[0] = _min * _min_factor;
286 if (_max_prop != 0) {
287 ranges[1] = _max_prop->getFloatValue() * _max_factor;
289 ranges[1] = _max * _max_factor;
293 ranges[1] = 1000000000.f;
295 ((ssgRangeSelector *)_branch)->setRanges(ranges, 2);
301 ////////////////////////////////////////////////////////////////////////
302 // Implementation of SGBillboardAnimation
303 ////////////////////////////////////////////////////////////////////////
305 SGBillboardAnimation::SGBillboardAnimation (SGPropertyNode_ptr props)
306 : SGAnimation(props, new ssgCutout(props->getBoolValue("spherical", true)))
310 SGBillboardAnimation::~SGBillboardAnimation ()
316 ////////////////////////////////////////////////////////////////////////
317 // Implementation of SGSelectAnimation
318 ////////////////////////////////////////////////////////////////////////
320 SGSelectAnimation::SGSelectAnimation( SGPropertyNode *prop_root,
321 SGPropertyNode_ptr props )
322 : SGAnimation(props, new ssgSelector),
325 SGPropertyNode_ptr node = props->getChild("condition");
327 _condition = sgReadCondition(prop_root, node);
330 SGSelectAnimation::~SGSelectAnimation ()
336 SGSelectAnimation::update()
338 if (_condition != 0 && _condition->test())
339 ((ssgSelector *)_branch)->select(0xffff);
341 ((ssgSelector *)_branch)->select(0x0000);
347 ////////////////////////////////////////////////////////////////////////
348 // Implementation of SGSpinAnimation
349 ////////////////////////////////////////////////////////////////////////
351 SGSpinAnimation::SGSpinAnimation( SGPropertyNode *prop_root,
352 SGPropertyNode_ptr props,
353 double sim_time_sec )
354 : SGAnimation(props, new ssgTransform),
355 _use_personality( props->getBoolValue("use-personality",false) ),
356 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
357 _last_time_sec( sim_time_sec ),
360 SGPropertyNode_ptr node = props->getChild("condition");
362 _condition = sgReadCondition(prop_root, node);
367 if (props->hasValue("axis/x1-m")) {
368 double x1,y1,z1,x2,y2,z2;
369 x1 = props->getFloatValue("axis/x1-m");
370 y1 = props->getFloatValue("axis/y1-m");
371 z1 = props->getFloatValue("axis/z1-m");
372 x2 = props->getFloatValue("axis/x2-m");
373 y2 = props->getFloatValue("axis/y2-m");
374 z2 = props->getFloatValue("axis/z2-m");
375 _center[0] = (x1+x2)/2;
376 _center[1]= (y1+y2)/2;
377 _center[2] = (z1+z2)/2;
378 float vector_length = sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1) + (z2-z1)*(z2-z1));
379 _axis[0] = (x2-x1)/vector_length;
380 _axis[1] = (y2-y1)/vector_length;
381 _axis[2] = (z2-z1)/vector_length;
383 _axis[0] = props->getFloatValue("axis/x", 0);
384 _axis[1] = props->getFloatValue("axis/y", 0);
385 _axis[2] = props->getFloatValue("axis/z", 0);
387 if (props->hasValue("center/x-m")) {
388 _center[0] = props->getFloatValue("center/x-m", 0);
389 _center[1] = props->getFloatValue("center/y-m", 0);
390 _center[2] = props->getFloatValue("center/z-m", 0);
392 sgNormalizeVec3(_axis);
394 //_factor(props->getDoubleValue("factor", 1.0)),
398 SGPropertyNode_ptr factor_n = props->getNode( "factor" );
399 if ( factor_n != 0 ) {
400 SGPropertyNode_ptr rand_n = factor_n->getNode( "random" );
402 _factor_min = rand_n->getDoubleValue( "min", 0.0 );
403 _factor_max = rand_n->getDoubleValue( "max", 1.0 );
404 _factor = _factor_min + sg_random() * ( _factor_max - _factor_min );
406 _factor = _factor_min = _factor_max = props->getDoubleValue("factor", 1.0);
409 //_position_deg(props->getDoubleValue("starting-position-deg", 0)),
411 _position_deg_min = 0.0;
412 _position_deg_max = 0.0;
413 SGPropertyNode_ptr position_deg_n = props->getNode( "starting-position-deg" );
414 if ( position_deg_n != 0 ) {
415 SGPropertyNode_ptr rand_n = position_deg_n->getNode( "random" );
417 _position_deg_min = rand_n->getDoubleValue( "min", 0.0 );
418 _position_deg_max = rand_n->getDoubleValue( "max", 1.0 );
419 _position_deg = _position_deg_min + sg_random() * ( _position_deg_max - _position_deg_min );
421 _position_deg = _position_deg_min = _position_deg_max =
422 props->getDoubleValue("starting-position-deg", 1.0);
427 SGSpinAnimation::~SGSpinAnimation ()
432 SGSpinAnimation::update()
434 if ( _condition == 0 || _condition->test() ) {
437 if ( _use_personality ) {
438 SGPersonalityBranch *key = current_object;
439 if ( !key->getIntValue( this, INIT_SPIN ) ) {
440 double v = _factor_min + sg_random() * ( _factor_max - _factor_min );
441 key->setDoubleValue( v, this, FACTOR_SPIN );
443 key->setDoubleValue( sim_time_sec, this, LAST_TIME_SEC_SPIN );
444 key->setIntValue( 1, this, INIT_SPIN );
446 v = _position_deg_min + sg_random() * ( _position_deg_max - _position_deg_min );
447 key->setDoubleValue( v, this, POSITION_DEG_SPIN );
450 _factor = key->getDoubleValue( this, FACTOR_SPIN );
451 _position_deg = key->getDoubleValue( this, POSITION_DEG_SPIN );
452 _last_time_sec = key->getDoubleValue( this, LAST_TIME_SEC_SPIN );
453 dt = sim_time_sec - _last_time_sec;
454 _last_time_sec = sim_time_sec;
455 key->setDoubleValue( _last_time_sec, this, LAST_TIME_SEC_SPIN );
457 velocity_rpms = (_prop->getDoubleValue() * _factor / 60.0);
458 _position_deg += (dt * velocity_rpms * 360);
459 while (_position_deg < 0)
460 _position_deg += 360.0;
461 while (_position_deg >= 360.0)
462 _position_deg -= 360.0;
463 key->setDoubleValue( _position_deg, this, POSITION_DEG_SPIN );
465 dt = sim_time_sec - _last_time_sec;
466 _last_time_sec = sim_time_sec;
468 velocity_rpms = (_prop->getDoubleValue() * _factor / 60.0);
469 _position_deg += (dt * velocity_rpms * 360);
470 while (_position_deg < 0)
471 _position_deg += 360.0;
472 while (_position_deg >= 360.0)
473 _position_deg -= 360.0;
476 set_rotation(_matrix, _position_deg, _center, _axis);
477 ((ssgTransform *)_branch)->setTransform(_matrix);
484 ////////////////////////////////////////////////////////////////////////
485 // Implementation of SGTimedAnimation
486 ////////////////////////////////////////////////////////////////////////
488 SGTimedAnimation::SGTimedAnimation (SGPropertyNode_ptr props)
489 : SGAnimation(props, new ssgSelector),
490 _use_personality( props->getBoolValue("use-personality",false) ),
491 _duration_sec(props->getDoubleValue("duration-sec", 1.0)),
492 _last_time_sec( sim_time_sec ),
493 _total_duration_sec( 0 ),
497 vector<SGPropertyNode_ptr> nodes = props->getChildren( "branch-duration-sec" );
498 size_t nb = nodes.size();
499 for ( size_t i = 0; i < nb; i++ ) {
500 size_t ind = nodes[ i ]->getIndex();
501 while ( ind >= _branch_duration_specs.size() ) {
502 _branch_duration_specs.push_back( DurationSpec( _duration_sec ) );
504 SGPropertyNode_ptr rNode = nodes[ i ]->getChild("random");
506 _branch_duration_specs[ ind ] = DurationSpec( nodes[ i ]->getDoubleValue() );
508 _branch_duration_specs[ ind ] = DurationSpec( rNode->getDoubleValue( "min", 0.0 ),
509 rNode->getDoubleValue( "max", 1.0 ) );
514 SGTimedAnimation::~SGTimedAnimation ()
519 SGTimedAnimation::init()
521 if ( !_use_personality ) {
522 for ( int i = 0; i < getBranch()->getNumKids(); i++ ) {
524 if ( i < (int)_branch_duration_specs.size() ) {
525 DurationSpec &sp = _branch_duration_specs[ i ];
526 v = sp._min + sg_random() * ( sp._max - sp._min );
530 _branch_duration_sec.push_back( v );
531 _total_duration_sec += v;
533 // Sanity check : total duration shouldn't equal zero
534 if ( _total_duration_sec < 0.01 ) {
535 _total_duration_sec = 0.01;
538 ((ssgSelector *)getBranch())->selectStep(_step);
542 SGTimedAnimation::update()
544 if ( _use_personality ) {
545 SGPersonalityBranch *key = current_object;
546 if ( !key->getIntValue( this, INIT_TIMED ) ) {
549 for ( size_t i = 0; i < _branch_duration_specs.size(); i++ ) {
550 DurationSpec &sp = _branch_duration_specs[ i ];
551 double v = sp._min + sg_random() * ( sp._max - sp._min );
552 key->setDoubleValue( v, this, BRANCH_DURATION_SEC_TIMED, i );
557 // Sanity check : total duration shouldn't equal zero
558 if ( total < 0.01 ) {
561 offset *= sg_random();
562 key->setDoubleValue( sim_time_sec - offset, this, LAST_TIME_SEC_TIMED );
563 key->setDoubleValue( total, this, TOTAL_DURATION_SEC_TIMED );
564 key->setIntValue( 0, this, STEP_TIMED );
565 key->setIntValue( 1, this, INIT_TIMED );
568 _step = key->getIntValue( this, STEP_TIMED );
569 _last_time_sec = key->getDoubleValue( this, LAST_TIME_SEC_TIMED );
570 _total_duration_sec = key->getDoubleValue( this, TOTAL_DURATION_SEC_TIMED );
571 while ( ( sim_time_sec - _last_time_sec ) >= _total_duration_sec ) {
572 _last_time_sec += _total_duration_sec;
574 double duration = _duration_sec;
575 if ( _step < (int)_branch_duration_specs.size() ) {
576 duration = key->getDoubleValue( this, BRANCH_DURATION_SEC_TIMED, _step );
578 if ( ( sim_time_sec - _last_time_sec ) >= duration ) {
579 _last_time_sec += duration;
581 if ( _step >= getBranch()->getNumKids() )
584 ((ssgSelector *)getBranch())->selectStep( _step );
585 key->setDoubleValue( _last_time_sec, this, LAST_TIME_SEC_TIMED );
586 key->setIntValue( _step, this, STEP_TIMED );
588 while ( ( sim_time_sec - _last_time_sec ) >= _total_duration_sec ) {
589 _last_time_sec += _total_duration_sec;
591 double duration = _duration_sec;
592 if ( _step < (int)_branch_duration_sec.size() ) {
593 duration = _branch_duration_sec[ _step ];
595 if ( ( sim_time_sec - _last_time_sec ) >= duration ) {
596 _last_time_sec += duration;
598 if ( _step >= getBranch()->getNumKids() )
600 ((ssgSelector *)getBranch())->selectStep( _step );
608 ////////////////////////////////////////////////////////////////////////
609 // Implementation of SGRotateAnimation
610 ////////////////////////////////////////////////////////////////////////
612 SGRotateAnimation::SGRotateAnimation( SGPropertyNode *prop_root,
613 SGPropertyNode_ptr props )
614 : SGAnimation(props, new ssgTransform),
615 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
616 _offset_deg(props->getDoubleValue("offset-deg", 0.0)),
617 _factor(props->getDoubleValue("factor", 1.0)),
618 _table(read_interpolation_table(props)),
619 _has_min(props->hasValue("min-deg")),
620 _min_deg(props->getDoubleValue("min-deg")),
621 _has_max(props->hasValue("max-deg")),
622 _max_deg(props->getDoubleValue("max-deg")),
623 _position_deg(props->getDoubleValue("starting-position-deg", 0)),
626 SGPropertyNode_ptr node = props->getChild("condition");
628 _condition = sgReadCondition(prop_root, node);
633 if (props->hasValue("axis/x") || props->hasValue("axis/y") || props->hasValue("axis/z")) {
634 _axis[0] = props->getFloatValue("axis/x", 0);
635 _axis[1] = props->getFloatValue("axis/y", 0);
636 _axis[2] = props->getFloatValue("axis/z", 0);
638 double x1,y1,z1,x2,y2,z2;
639 x1 = props->getFloatValue("axis/x1-m", 0);
640 y1 = props->getFloatValue("axis/y1-m", 0);
641 z1 = props->getFloatValue("axis/z1-m", 0);
642 x2 = props->getFloatValue("axis/x2-m", 0);
643 y2 = props->getFloatValue("axis/y2-m", 0);
644 z2 = props->getFloatValue("axis/z2-m", 0);
645 _center[0] = (x1+x2)/2;
646 _center[1]= (y1+y2)/2;
647 _center[2] = (z1+z2)/2;
648 float vector_length = sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1) + (z2-z1)*(z2-z1));
649 _axis[0] = (x2-x1)/vector_length;
650 _axis[1] = (y2-y1)/vector_length;
651 _axis[2] = (z2-z1)/vector_length;
653 if (props->hasValue("center/x-m") || props->hasValue("center/y-m")
654 || props->hasValue("center/z-m")) {
655 _center[0] = props->getFloatValue("center/x-m", 0);
656 _center[1] = props->getFloatValue("center/y-m", 0);
657 _center[2] = props->getFloatValue("center/z-m", 0);
659 sgNormalizeVec3(_axis);
662 SGRotateAnimation::~SGRotateAnimation ()
668 SGRotateAnimation::update()
670 if (_condition == 0 || _condition->test()) {
672 _position_deg = _prop->getDoubleValue() * _factor + _offset_deg;
673 if (_has_min && _position_deg < _min_deg)
674 _position_deg = _min_deg;
675 if (_has_max && _position_deg > _max_deg)
676 _position_deg = _max_deg;
678 _position_deg = _table->interpolate(_prop->getDoubleValue());
680 set_rotation(_matrix, _position_deg, _center, _axis);
681 ((ssgTransform *)_branch)->setTransform(_matrix);
687 ////////////////////////////////////////////////////////////////////////
688 // Implementation of SGBlendAnimation
689 ////////////////////////////////////////////////////////////////////////
691 SGBlendAnimation::SGBlendAnimation( SGPropertyNode *prop_root,
692 SGPropertyNode_ptr props )
693 : SGAnimation(props, new ssgTransform),
694 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
695 _table(read_interpolation_table(props)),
697 _offset(props->getDoubleValue("offset", 0.0)),
698 _factor(props->getDoubleValue("factor", 1.0)),
699 _has_min(props->hasValue("min")),
700 _min(props->getDoubleValue("min", 0.0)),
701 _has_max(props->hasValue("max")),
702 _max(props->getDoubleValue("max", 1.0))
706 SGBlendAnimation::~SGBlendAnimation ()
712 SGBlendAnimation::update()
717 _blend = 1.0 - (_prop->getDoubleValue() * _factor + _offset);
719 if (_has_min && (_blend < _min))
721 if (_has_max && (_blend > _max))
724 _blend = _table->interpolate(_prop->getDoubleValue());
727 if (_blend != _prev_value) {
728 _prev_value = _blend;
729 change_alpha( _branch, _blend );
736 ////////////////////////////////////////////////////////////////////////
737 // Implementation of SGTranslateAnimation
738 ////////////////////////////////////////////////////////////////////////
740 SGTranslateAnimation::SGTranslateAnimation( SGPropertyNode *prop_root,
741 SGPropertyNode_ptr props )
742 : SGAnimation(props, new ssgTransform),
743 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
744 _offset_m(props->getDoubleValue("offset-m", 0.0)),
745 _factor(props->getDoubleValue("factor", 1.0)),
746 _table(read_interpolation_table(props)),
747 _has_min(props->hasValue("min-m")),
748 _min_m(props->getDoubleValue("min-m")),
749 _has_max(props->hasValue("max-m")),
750 _max_m(props->getDoubleValue("max-m")),
751 _position_m(props->getDoubleValue("starting-position-m", 0)),
754 SGPropertyNode_ptr node = props->getChild("condition");
756 _condition = sgReadCondition(prop_root, node);
758 _axis[0] = props->getFloatValue("axis/x", 0);
759 _axis[1] = props->getFloatValue("axis/y", 0);
760 _axis[2] = props->getFloatValue("axis/z", 0);
761 sgNormalizeVec3(_axis);
764 SGTranslateAnimation::~SGTranslateAnimation ()
770 SGTranslateAnimation::update()
772 if (_condition == 0 || _condition->test()) {
774 _position_m = (_prop->getDoubleValue() + _offset_m) * _factor;
775 if (_has_min && _position_m < _min_m)
776 _position_m = _min_m;
777 if (_has_max && _position_m > _max_m)
778 _position_m = _max_m;
780 _position_m = _table->interpolate(_prop->getDoubleValue());
782 set_translation(_matrix, _position_m, _axis);
783 ((ssgTransform *)_branch)->setTransform(_matrix);
790 ////////////////////////////////////////////////////////////////////////
791 // Implementation of SGScaleAnimation
792 ////////////////////////////////////////////////////////////////////////
794 SGScaleAnimation::SGScaleAnimation( SGPropertyNode *prop_root,
795 SGPropertyNode_ptr props )
796 : SGAnimation(props, new ssgTransform),
797 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
798 _x_factor(props->getDoubleValue("x-factor", 1.0)),
799 _y_factor(props->getDoubleValue("y-factor", 1.0)),
800 _z_factor(props->getDoubleValue("z-factor", 1.0)),
801 _x_offset(props->getDoubleValue("x-offset", 1.0)),
802 _y_offset(props->getDoubleValue("y-offset", 1.0)),
803 _z_offset(props->getDoubleValue("z-offset", 1.0)),
804 _table(read_interpolation_table(props)),
805 _has_min_x(props->hasValue("x-min")),
806 _has_min_y(props->hasValue("y-min")),
807 _has_min_z(props->hasValue("z-min")),
808 _min_x(props->getDoubleValue("x-min")),
809 _min_y(props->getDoubleValue("y-min")),
810 _min_z(props->getDoubleValue("z-min")),
811 _has_max_x(props->hasValue("x-max")),
812 _has_max_y(props->hasValue("y-max")),
813 _has_max_z(props->hasValue("z-max")),
814 _max_x(props->getDoubleValue("x-max")),
815 _max_y(props->getDoubleValue("y-max")),
816 _max_z(props->getDoubleValue("z-max"))
820 SGScaleAnimation::~SGScaleAnimation ()
826 SGScaleAnimation::update()
829 _x_scale = _prop->getDoubleValue() * _x_factor + _x_offset;
830 if (_has_min_x && _x_scale < _min_x)
832 if (_has_max_x && _x_scale > _max_x)
835 _x_scale = _table->interpolate(_prop->getDoubleValue());
839 _y_scale = _prop->getDoubleValue() * _y_factor + _y_offset;
840 if (_has_min_y && _y_scale < _min_y)
842 if (_has_max_y && _y_scale > _max_y)
845 _y_scale = _table->interpolate(_prop->getDoubleValue());
849 _z_scale = _prop->getDoubleValue() * _z_factor + _z_offset;
850 if (_has_min_z && _z_scale < _min_z)
852 if (_has_max_z && _z_scale > _max_z)
855 _z_scale = _table->interpolate(_prop->getDoubleValue());
858 set_scale(_matrix, _x_scale, _y_scale, _z_scale );
859 ((ssgTransform *)_branch)->setTransform(_matrix);
864 ////////////////////////////////////////////////////////////////////////
865 // Implementation of SGTexRotateAnimation
866 ////////////////////////////////////////////////////////////////////////
868 SGTexRotateAnimation::SGTexRotateAnimation( SGPropertyNode *prop_root,
869 SGPropertyNode_ptr props )
870 : SGAnimation(props, new ssgTexTrans),
871 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
872 _offset_deg(props->getDoubleValue("offset-deg", 0.0)),
873 _factor(props->getDoubleValue("factor", 1.0)),
874 _table(read_interpolation_table(props)),
875 _has_min(props->hasValue("min-deg")),
876 _min_deg(props->getDoubleValue("min-deg")),
877 _has_max(props->hasValue("max-deg")),
878 _max_deg(props->getDoubleValue("max-deg")),
879 _position_deg(props->getDoubleValue("starting-position-deg", 0))
881 _center[0] = props->getFloatValue("center/x", 0);
882 _center[1] = props->getFloatValue("center/y", 0);
883 _center[2] = props->getFloatValue("center/z", 0);
884 _axis[0] = props->getFloatValue("axis/x", 0);
885 _axis[1] = props->getFloatValue("axis/y", 0);
886 _axis[2] = props->getFloatValue("axis/z", 0);
887 sgNormalizeVec3(_axis);
890 SGTexRotateAnimation::~SGTexRotateAnimation ()
896 SGTexRotateAnimation::update()
899 _position_deg = _prop->getDoubleValue() * _factor + _offset_deg;
900 if (_has_min && _position_deg < _min_deg)
901 _position_deg = _min_deg;
902 if (_has_max && _position_deg > _max_deg)
903 _position_deg = _max_deg;
905 _position_deg = _table->interpolate(_prop->getDoubleValue());
907 set_rotation(_matrix, _position_deg, _center, _axis);
908 ((ssgTexTrans *)_branch)->setTransform(_matrix);
913 ////////////////////////////////////////////////////////////////////////
914 // Implementation of SGTexTranslateAnimation
915 ////////////////////////////////////////////////////////////////////////
917 SGTexTranslateAnimation::SGTexTranslateAnimation( SGPropertyNode *prop_root,
918 SGPropertyNode_ptr props )
919 : SGAnimation(props, new ssgTexTrans),
920 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true)),
921 _offset(props->getDoubleValue("offset", 0.0)),
922 _factor(props->getDoubleValue("factor", 1.0)),
923 _step(props->getDoubleValue("step",0.0)),
924 _scroll(props->getDoubleValue("scroll",0.0)),
925 _table(read_interpolation_table(props)),
926 _has_min(props->hasValue("min")),
927 _min(props->getDoubleValue("min")),
928 _has_max(props->hasValue("max")),
929 _max(props->getDoubleValue("max")),
930 _position(props->getDoubleValue("starting-position", 0))
932 _axis[0] = props->getFloatValue("axis/x", 0);
933 _axis[1] = props->getFloatValue("axis/y", 0);
934 _axis[2] = props->getFloatValue("axis/z", 0);
935 sgNormalizeVec3(_axis);
938 SGTexTranslateAnimation::~SGTexTranslateAnimation ()
944 SGTexTranslateAnimation::update()
947 _position = (apply_mods(_prop->getDoubleValue(), _step, _scroll) + _offset) * _factor;
948 if (_has_min && _position < _min)
950 if (_has_max && _position > _max)
953 _position = _table->interpolate(apply_mods(_prop->getDoubleValue(), _step, _scroll));
955 set_translation(_matrix, _position, _axis);
956 ((ssgTexTrans *)_branch)->setTransform(_matrix);
961 ////////////////////////////////////////////////////////////////////////
962 // Implementation of SGTexMultipleAnimation
963 ////////////////////////////////////////////////////////////////////////
965 SGTexMultipleAnimation::SGTexMultipleAnimation( SGPropertyNode *prop_root,
966 SGPropertyNode_ptr props )
967 : SGAnimation(props, new ssgTexTrans),
968 _prop((SGPropertyNode *)prop_root->getNode(props->getStringValue("property", "/null"), true))
972 vector<SGPropertyNode_ptr> transform_nodes = props->getChildren("transform");
973 _transform = new TexTransform [transform_nodes.size()];
975 for (i = 0; i < transform_nodes.size(); i++) {
976 SGPropertyNode_ptr transform_props = transform_nodes[i];
978 if (!strcmp("textranslate",transform_props->getStringValue("subtype", 0))) {
980 // transform is a translation
981 _transform[i].subtype = 0;
983 _transform[i].prop = (SGPropertyNode *)prop_root->getNode(transform_props->getStringValue("property", "/null"), true);
985 _transform[i].offset = transform_props->getDoubleValue("offset", 0.0);
986 _transform[i].factor = transform_props->getDoubleValue("factor", 1.0);
987 _transform[i].step = transform_props->getDoubleValue("step",0.0);
988 _transform[i].scroll = transform_props->getDoubleValue("scroll",0.0);
989 _transform[i].table = read_interpolation_table(transform_props);
990 _transform[i].has_min = transform_props->hasValue("min");
991 _transform[i].min = transform_props->getDoubleValue("min");
992 _transform[i].has_max = transform_props->hasValue("max");
993 _transform[i].max = transform_props->getDoubleValue("max");
994 _transform[i].position = transform_props->getDoubleValue("starting-position", 0);
996 _transform[i].axis[0] = transform_props->getFloatValue("axis/x", 0);
997 _transform[i].axis[1] = transform_props->getFloatValue("axis/y", 0);
998 _transform[i].axis[2] = transform_props->getFloatValue("axis/z", 0);
999 sgNormalizeVec3(_transform[i].axis);
1001 } else if (!strcmp("texrotate",transform_nodes[i]->getStringValue("subtype", 0))) {
1003 // transform is a rotation
1004 _transform[i].subtype = 1;
1006 _transform[i].prop = (SGPropertyNode *)prop_root->getNode(transform_props->getStringValue("property", "/null"), true);
1007 _transform[i].offset = transform_props->getDoubleValue("offset-deg", 0.0);
1008 _transform[i].factor = transform_props->getDoubleValue("factor", 1.0);
1009 _transform[i].table = read_interpolation_table(transform_props);
1010 _transform[i].has_min = transform_props->hasValue("min-deg");
1011 _transform[i].min = transform_props->getDoubleValue("min-deg");
1012 _transform[i].has_max = transform_props->hasValue("max-deg");
1013 _transform[i].max = transform_props->getDoubleValue("max-deg");
1014 _transform[i].position = transform_props->getDoubleValue("starting-position-deg", 0);
1016 _transform[i].center[0] = transform_props->getFloatValue("center/x", 0);
1017 _transform[i].center[1] = transform_props->getFloatValue("center/y", 0);
1018 _transform[i].center[2] = transform_props->getFloatValue("center/z", 0);
1019 _transform[i].axis[0] = transform_props->getFloatValue("axis/x", 0);
1020 _transform[i].axis[1] = transform_props->getFloatValue("axis/y", 0);
1021 _transform[i].axis[2] = transform_props->getFloatValue("axis/z", 0);
1022 sgNormalizeVec3(_transform[i].axis);
1028 SGTexMultipleAnimation::~SGTexMultipleAnimation ()
1030 delete [] _transform;
1034 SGTexMultipleAnimation::update()
1038 sgMakeIdentMat4(tmatrix);
1039 for (i = 0; i < _num_transforms; i++) {
1041 if(_transform[i].subtype == 0) {
1043 // subtype 0 is translation
1044 if (_transform[i].table == 0) {
1045 _transform[i].position = (apply_mods(_transform[i].prop->getDoubleValue(), _transform[i].step,_transform[i].scroll) + _transform[i].offset) * _transform[i].factor;
1046 if (_transform[i].has_min && _transform[i].position < _transform[i].min)
1047 _transform[i].position = _transform[i].min;
1048 if (_transform[i].has_max && _transform[i].position > _transform[i].max)
1049 _transform[i].position = _transform[i].max;
1051 _transform[i].position = _transform[i].table->interpolate(apply_mods(_transform[i].prop->getDoubleValue(), _transform[i].step,_transform[i].scroll));
1053 set_translation(_transform[i].matrix, _transform[i].position, _transform[i].axis);
1054 sgPreMultMat4(tmatrix, _transform[i].matrix);
1056 } else if (_transform[i].subtype == 1) {
1058 // subtype 1 is rotation
1060 if (_transform[i].table == 0) {
1061 _transform[i].position = _transform[i].prop->getDoubleValue() * _transform[i].factor + _transform[i].offset;
1062 if (_transform[i].has_min && _transform[i].position < _transform[i].min)
1063 _transform[i].position = _transform[i].min;
1064 if (_transform[i].has_max && _transform[i].position > _transform[i].max)
1065 _transform[i].position = _transform[i].max;
1067 _transform[i].position = _transform[i].table->interpolate(_transform[i].prop->getDoubleValue());
1069 set_rotation(_transform[i].matrix, _transform[i].position, _transform[i].center, _transform[i].axis);
1070 sgPreMultMat4(tmatrix, _transform[i].matrix);
1073 ((ssgTexTrans *)_branch)->setTransform(tmatrix);
1079 ////////////////////////////////////////////////////////////////////////
1080 // Implementation of SGAlphaTestAnimation
1081 ////////////////////////////////////////////////////////////////////////
1083 SGAlphaTestAnimation::SGAlphaTestAnimation(SGPropertyNode_ptr props)
1084 : SGAnimation(props, new ssgBranch)
1086 _alpha_clamp = props->getFloatValue("alpha-factor", 0.0);
1089 SGAlphaTestAnimation::~SGAlphaTestAnimation ()
1093 void SGAlphaTestAnimation::init()
1095 setAlphaClampToBranch(_branch,_alpha_clamp);
1098 void SGAlphaTestAnimation::setAlphaClampToBranch(ssgBranch *b, float clamp)
1100 int nb = b->getNumKids();
1101 for (int i = 0; i<nb; i++) {
1102 ssgEntity *e = b->getKid(i);
1103 if (e->isAKindOf(ssgTypeLeaf())) {
1104 ssgSimpleState*s = (ssgSimpleState*)((ssgLeaf*)e)->getState();
1105 s->enable( GL_ALPHA_TEST );
1106 s->setAlphaClamp( clamp );
1107 } else if (e->isAKindOf(ssgTypeBranch())) {
1108 setAlphaClampToBranch( (ssgBranch*)e, clamp );
1115 ////////////////////////////////////////////////////////////////////////
1116 // Implementation of SGMaterialAnimation
1117 ////////////////////////////////////////////////////////////////////////
1119 SGMaterialAnimation::SGMaterialAnimation( SGPropertyNode *prop_root,
1120 SGPropertyNode_ptr props, const SGPath &texture_path)
1121 : SGAnimation(props, new ssgBranch),
1122 _prop_root(prop_root),
1124 _texture_base(texture_path),
1125 _cached_material(0),
1126 _cloned_material(0),
1129 _global(props->getBoolValue("global", false))
1131 SGPropertyNode_ptr n;
1132 n = props->getChild("condition");
1133 _condition = n ? sgReadCondition(_prop_root, n) : 0;
1134 n = props->getChild("property-base");
1136 _prop_base = n->getStringValue();
1137 if (!_prop_base.empty() && _prop_base.end()[-1] != '/')
1141 initColorGroup(props->getChild("diffuse"), &_diff, DIFFUSE);
1142 initColorGroup(props->getChild("ambient"), &_amb, AMBIENT);
1143 initColorGroup(props->getChild("emission"), &_emis, EMISSION);
1144 initColorGroup(props->getChild("specular"), &_spec, SPECULAR);
1146 _shi = props->getFloatValue("shininess", -1.0);
1148 _update |= SHININESS;
1150 SGPropertyNode_ptr group = props->getChild("transparency");
1152 _trans.value = group->getFloatValue("alpha", -1.0);
1153 _trans.factor = group->getFloatValue("factor", 1.0);
1154 _trans.offset = group->getFloatValue("offset", 0.0);
1155 _trans.min = group->getFloatValue("min", 0.0);
1156 if (_trans.min < 0.0)
1158 _trans.max = group->getFloatValue("max", 1.0);
1159 if (_trans.max > 1.0)
1162 _update |= TRANSPARENCY;
1164 n = group->getChild("alpha-prop");
1165 _trans.value_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1166 n = group->getChild("factor-prop");
1167 _trans.factor_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1168 n = group->getChild("offset-prop");
1169 _trans.offset_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1171 _read |= TRANSPARENCY;
1174 _thresh = props->getFloatValue("threshold", -1.0);
1176 _update |= THRESHOLD;
1178 string _texture_str = props->getStringValue("texture", "");
1179 if (!_texture_str.empty()) {
1180 _texture = _texture_base;
1181 _texture.append(_texture_str);
1185 n = props->getChild("shininess-prop");
1186 _shi_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1187 n = props->getChild("threshold-prop");
1188 _thresh_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1189 n = props->getChild("texture-prop");
1190 _tex_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1193 void SGMaterialAnimation::initColorGroup(SGPropertyNode_ptr group, ColorSpec *col, int flag)
1198 col->red = group->getFloatValue("red", -1.0);
1199 col->green = group->getFloatValue("green", -1.0);
1200 col->blue = group->getFloatValue("blue", -1.0);
1201 col->factor = group->getFloatValue("factor", 1.0);
1202 col->offset = group->getFloatValue("offset", 0.0);
1207 n = group->getChild("red-prop");
1208 col->red_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1209 n = group->getChild("green-prop");
1210 col->green_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1211 n = group->getChild("blue-prop");
1212 col->blue_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1213 n = group->getChild("factor-prop");
1214 col->factor_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1215 n = group->getChild("offset-prop");
1216 col->offset_prop = n ? _prop_root->getNode(path(n->getStringValue()), true) : 0;
1221 void SGMaterialAnimation::init()
1224 cloneMaterials(_branch);
1227 int SGMaterialAnimation::update()
1229 if (_condition && !_condition->test())
1232 if (_read & DIFFUSE)
1233 updateColorGroup(&_diff, DIFFUSE);
1234 if (_read & AMBIENT)
1235 updateColorGroup(&_amb, AMBIENT);
1236 if (_read & EMISSION)
1237 updateColorGroup(&_emis, EMISSION);
1238 if (_read & SPECULAR)
1239 updateColorGroup(&_spec, SPECULAR);
1244 _shi = _shi_prop->getFloatValue();
1246 _update |= SHININESS;
1248 if (_read & TRANSPARENCY) {
1249 PropSpec tmp = _trans;
1250 if (_trans.value_prop)
1251 _trans.value = _trans.value_prop->getFloatValue();
1252 if (_trans.factor_prop)
1253 _trans.factor = _trans.factor_prop->getFloatValue();
1254 if (_trans.offset_prop)
1255 _trans.offset = _trans.offset_prop->getFloatValue();
1257 _update |= TRANSPARENCY;
1261 _thresh = _thresh_prop->getFloatValue();
1263 _update |= THRESHOLD;
1266 string t = _tex_prop->getStringValue();
1267 if (!t.empty() && t != _texture_str) {
1269 _texture = _texture_base;
1275 setMaterialBranch(_branch);
1281 void SGMaterialAnimation::updateColorGroup(ColorSpec *col, int flag)
1283 ColorSpec tmp = *col;
1285 col->red = col->red_prop->getFloatValue();
1286 if (col->green_prop)
1287 col->green = col->green_prop->getFloatValue();
1289 col->blue = col->blue_prop->getFloatValue();
1290 if (col->factor_prop)
1291 col->factor = col->factor_prop->getFloatValue();
1292 if (col->offset_prop)
1293 col->offset = col->offset_prop->getFloatValue();
1298 void SGMaterialAnimation::cloneMaterials(ssgBranch *b)
1300 for (int i = 0; i < b->getNumKids(); i++)
1301 cloneMaterials((ssgBranch *)b->getKid(i));
1303 if (!b->isAKindOf(ssgTypeLeaf()) || !((ssgLeaf *)b)->hasState())
1306 ssgSimpleState *s = (ssgSimpleState *)((ssgLeaf *)b)->getState();
1307 if (!_cached_material || _cached_material != s) {
1308 _cached_material = s;
1309 _cloned_material = (ssgSimpleState *)s->clone(SSG_CLONE_STATE);
1311 ((ssgLeaf *)b)->setState(_cloned_material);
1314 void SGMaterialAnimation::setMaterialBranch(ssgBranch *b)
1316 for (int i = 0; i < b->getNumKids(); i++)
1317 setMaterialBranch((ssgBranch *)b->getKid(i));
1319 if (!b->isAKindOf(ssgTypeLeaf()) || !((ssgLeaf *)b)->hasState())
1322 ssgSimpleState *s = (ssgSimpleState *)((ssgLeaf *)b)->getState();
1324 if (_update & DIFFUSE) {
1325 float *v = _diff.rgba();
1326 SGfloat alpha = s->getMaterial(GL_DIFFUSE)[3];
1327 s->setColourMaterial(GL_DIFFUSE);
1328 s->enable(GL_COLOR_MATERIAL);
1329 s->setMaterial(GL_DIFFUSE, v[0], v[1], v[2], alpha);
1330 s->disable(GL_COLOR_MATERIAL);
1332 if (_update & AMBIENT) {
1333 s->setColourMaterial(GL_AMBIENT);
1334 s->enable(GL_COLOR_MATERIAL);
1335 s->setMaterial(GL_AMBIENT, _amb.rgba());
1336 s->disable(GL_COLOR_MATERIAL);
1338 if (_update & EMISSION)
1339 s->setMaterial(GL_EMISSION, _emis.rgba());
1340 if (_update & SPECULAR)
1341 s->setMaterial(GL_SPECULAR, _spec.rgba());
1342 if (_update & SHININESS)
1343 s->setShininess(clamp(_shi, 0.0, 128.0));
1344 if (_update & TRANSPARENCY) {
1345 SGfloat *v = s->getMaterial(GL_DIFFUSE);
1346 float trans = _trans.value * _trans.factor + _trans.offset;
1347 trans = trans < _trans.min ? _trans.min : trans > _trans.max ? _trans.max : trans;
1348 s->setMaterial(GL_DIFFUSE, v[0], v[1], v[2], trans);
1350 if (_update & THRESHOLD)
1351 s->setAlphaClamp(clamp(_thresh));
1352 if (_update & TEXTURE)
1353 s->setTexture(_texture.c_str());
1354 if (_update & (TEXTURE|TRANSPARENCY)) {
1355 SGfloat alpha = s->getMaterial(GL_DIFFUSE)[3];
1356 ssgTexture *tex = s->getTexture();
1357 if ((tex && tex->hasAlpha()) || alpha < 0.999) {
1358 s->setColourMaterial(GL_DIFFUSE);
1359 s->enable(GL_COLOR_MATERIAL);
1360 s->enable(GL_BLEND);
1361 s->enable(GL_ALPHA_TEST);
1362 s->setTranslucent();
1363 s->disable(GL_COLOR_MATERIAL);
1365 s->disable(GL_BLEND);
1366 s->disable(GL_ALPHA_TEST);
1375 ////////////////////////////////////////////////////////////////////////
1376 // Implementation of SGFlashAnimation
1377 ////////////////////////////////////////////////////////////////////////
1378 SGFlashAnimation::SGFlashAnimation(SGPropertyNode_ptr props)
1379 : SGAnimation( props, new SGCustomTransform )
1381 _axis[0] = props->getFloatValue("axis/x", 0);
1382 _axis[1] = props->getFloatValue("axis/y", 0);
1383 _axis[2] = props->getFloatValue("axis/z", 1);
1385 _center[0] = props->getFloatValue("center/x-m", 0);
1386 _center[1] = props->getFloatValue("center/y-m", 0);
1387 _center[2] = props->getFloatValue("center/z-m", 0);
1389 _offset = props->getFloatValue("offset", 0.0);
1390 _factor = props->getFloatValue("factor", 1.0);
1391 _power = props->getFloatValue("power", 1.0);
1392 _two_sides = props->getBoolValue("two-sides", false);
1394 _min_v = props->getFloatValue("min", 0.0);
1395 _max_v = props->getFloatValue("max", 1.0);
1397 ((SGCustomTransform *)_branch)->setTransCallback( &SGFlashAnimation::flashCallback, this );
1400 SGFlashAnimation::~SGFlashAnimation()
1404 void SGFlashAnimation::flashCallback( sgMat4 r, sgFrustum *f, sgMat4 m, void *d )
1406 ((SGFlashAnimation *)d)->flashCallback( r, f, m );
1409 void SGFlashAnimation::flashCallback( sgMat4 r, sgFrustum *f, sgMat4 m )
1411 sgVec3 transformed_axis;
1412 sgXformVec3( transformed_axis, _axis, m );
1413 sgNormalizeVec3( transformed_axis );
1416 sgFullXformPnt3( view, _center, m );
1417 sgNormalizeVec3( view );
1419 float cos_angle = -sgScalarProductVec3( transformed_axis, view );
1420 float scale_factor = 0.f;
1421 if ( _two_sides && cos_angle < 0 )
1422 scale_factor = _factor * (float)pow( -cos_angle, _power ) + _offset;
1423 else if ( cos_angle > 0 )
1424 scale_factor = _factor * (float)pow( cos_angle, _power ) + _offset;
1426 if ( scale_factor < _min_v )
1427 scale_factor = _min_v;
1428 if ( scale_factor > _max_v )
1429 scale_factor = _max_v;
1432 sgMakeIdentMat4( transform );
1433 transform[0][0] = scale_factor;
1434 transform[1][1] = scale_factor;
1435 transform[2][2] = scale_factor;
1436 transform[3][0] = _center[0] * ( 1 - scale_factor );
1437 transform[3][1] = _center[1] * ( 1 - scale_factor );
1438 transform[3][2] = _center[2] * ( 1 - scale_factor );
1441 sgPreMultMat4( r, transform );
1446 ////////////////////////////////////////////////////////////////////////
1447 // Implementation of SGDistScaleAnimation
1448 ////////////////////////////////////////////////////////////////////////
1449 SGDistScaleAnimation::SGDistScaleAnimation(SGPropertyNode_ptr props)
1450 : SGAnimation( props, new SGCustomTransform ),
1451 _factor(props->getFloatValue("factor", 1.0)),
1452 _offset(props->getFloatValue("offset", 0.0)),
1453 _min_v(props->getFloatValue("min", 0.0)),
1454 _max_v(props->getFloatValue("max", 1.0)),
1455 _has_min(props->hasValue("min")),
1456 _has_max(props->hasValue("max")),
1457 _table(read_interpolation_table(props))
1459 _center[0] = props->getFloatValue("center/x-m", 0);
1460 _center[1] = props->getFloatValue("center/y-m", 0);
1461 _center[2] = props->getFloatValue("center/z-m", 0);
1463 ((SGCustomTransform *)_branch)->setTransCallback( &SGDistScaleAnimation::distScaleCallback, this );
1466 SGDistScaleAnimation::~SGDistScaleAnimation()
1470 void SGDistScaleAnimation::distScaleCallback( sgMat4 r, sgFrustum *f, sgMat4 m, void *d )
1472 ((SGDistScaleAnimation *)d)->distScaleCallback( r, f, m );
1475 void SGDistScaleAnimation::distScaleCallback( sgMat4 r, sgFrustum *f, sgMat4 m )
1478 sgFullXformPnt3( view, _center, m );
1480 float scale_factor = sgLengthVec3( view );
1482 scale_factor = _factor * scale_factor + _offset;
1483 if ( _has_min && scale_factor < _min_v )
1484 scale_factor = _min_v;
1485 if ( _has_max && scale_factor > _max_v )
1486 scale_factor = _max_v;
1488 scale_factor = _table->interpolate( scale_factor );
1492 sgMakeIdentMat4( transform );
1493 transform[0][0] = scale_factor;
1494 transform[1][1] = scale_factor;
1495 transform[2][2] = scale_factor;
1496 transform[3][0] = _center[0] * ( 1 - scale_factor );
1497 transform[3][1] = _center[1] * ( 1 - scale_factor );
1498 transform[3][2] = _center[2] * ( 1 - scale_factor );
1501 sgPreMultMat4( r, transform );
1504 // end of animation.cxx