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comparison src/haptic/linux/SDL_syshaptic.c @ 2526:2d88b82ce781 gsoc2008_force_feedback

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More documentation. SDL_HapticPeriodic.phase now should make sense. More explicit if you try to update an effect type.
author Edgar Simo <bobbens@gmail.com>
date Fri, 18 Jul 2008 08:00:16 +0000
parents 1a55848ce198
children 22ce87690b41
comparison
equal deleted inserted replaced
2525:1fb3fba13a2c 2526:2d88b82ce781
491 * Values above 32767 (for unsigned) are unspecified so we must clamp. 491 * Values above 32767 (for unsigned) are unspecified so we must clamp.
492 */ 492 */
493 static int 493 static int
494 SDL_SYS_ToFFEffect( struct ff_effect * dest, SDL_HapticEffect * src ) 494 SDL_SYS_ToFFEffect( struct ff_effect * dest, SDL_HapticEffect * src )
495 { 495 {
496 Uint32 tmp;
496 SDL_HapticConstant *constant; 497 SDL_HapticConstant *constant;
497 SDL_HapticPeriodic *periodic; 498 SDL_HapticPeriodic *periodic;
498 SDL_HapticCondition *condition; 499 SDL_HapticCondition *condition;
499 SDL_HapticRamp *ramp; 500 SDL_HapticRamp *ramp;
500 501
561 else if (periodic->type == SDL_HAPTIC_SAWTOOTHDOWN) 562 else if (periodic->type == SDL_HAPTIC_SAWTOOTHDOWN)
562 dest->u.periodic.waveform = FF_SAW_DOWN; 563 dest->u.periodic.waveform = FF_SAW_DOWN;
563 dest->u.periodic.period = CLAMP(periodic->period); 564 dest->u.periodic.period = CLAMP(periodic->period);
564 dest->u.periodic.magnitude = periodic->magnitude; 565 dest->u.periodic.magnitude = periodic->magnitude;
565 dest->u.periodic.offset = periodic->offset; 566 dest->u.periodic.offset = periodic->offset;
566 dest->u.periodic.phase = CLAMP(periodic->phase); 567 /* Phase is calculated based of offset from period and then clamped. */
568 tmp = ((periodic->phase % 36000) * dest->u.periodic.period) / 36000;
569 dest->u.periodic.phase = CLAMP(tmp);
567 570
568 /* Envelope */ 571 /* Envelope */
569 dest->u.periodic.envelope.attack_length = CLAMP(periodic->attack_length); 572 dest->u.periodic.envelope.attack_length = CLAMP(periodic->attack_length);
570 dest->u.periodic.envelope.attack_level = CLAMP(periodic->attack_level); 573 dest->u.periodic.envelope.attack_level = CLAMP(periodic->attack_level);
571 dest->u.periodic.envelope.fade_length = CLAMP(periodic->fade_length); 574 dest->u.periodic.envelope.fade_length = CLAMP(periodic->fade_length);