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							2.1 KiB
						
					
					
				
			
		
		
	
	
							79 lines
						
					
					
						
							2.1 KiB
						
					
					
				| /*
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|  * Copyright © 2011 Intel Corporation
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|  *
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|  * Permission is hereby granted, free of charge, to any person obtaining
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|  * a copy of this software and associated documentation files (the
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|  * "Software"), to deal in the Software without restriction, including
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|  * without limitation the rights to use, copy, modify, merge, publish,
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|  * distribute, sublicense, and/or sell copies of the Software, and to
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|  * permit persons to whom the Software is furnished to do so, subject to
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|  * the following conditions:
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|  *
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|  * The above copyright notice and this permission notice (including the
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|  * next paragraph) shall be included in all copies or substantial
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|  * portions of the Software.
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|  *
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|  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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|  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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|  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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|  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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|  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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|  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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|  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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|  * SOFTWARE.
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|  */
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| 
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| #include <stdint.h>
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| #include <inttypes.h>
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| 
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| #include "config.h"
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| 
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| #include "compositor.h"
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| #include "shared/timespec-util.h"
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| 
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| WL_EXPORT void
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| weston_view_geometry_dirty(struct weston_view *view)
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| {
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| }
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| 
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| WL_EXPORT int
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| weston_log(const char *fmt, ...)
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| {
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| 	return 0;
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| }
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| 
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| WL_EXPORT void
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| weston_view_schedule_repaint(struct weston_view *view)
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| {
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| }
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| 
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| WL_EXPORT void
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| weston_compositor_schedule_repaint(struct weston_compositor *compositor)
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| {
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| }
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| 
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| int
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| main(int argc, char *argv[])
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| {
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| 	const double k = 300.0;
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| 	const double current = 0.5;
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| 	const double target = 1.0;
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| 	const double friction = 1400;
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| 
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| 	struct weston_spring spring;
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| 	struct timespec time = { 0 };
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| 
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| 	weston_spring_init(&spring, k, current, target);
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| 	spring.friction = friction;
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| 	spring.previous = 0.48;
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| 	spring.timestamp = (struct timespec) { 0 };
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| 
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| 	while (!weston_spring_done(&spring)) {
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| 		printf("\t%" PRId64 "\t%f\n",
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| 		       timespec_to_msec(&time), spring.current);
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| 		weston_spring_update(&spring, &time);
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| 		timespec_add_msec(&time, &time, 16);
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| 	}
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| 
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| 	return 0;
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| }
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| 
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