diff options
| author | Kristian Høgsberg <krh@bitplanet.net> | 2013-06-17 09:23:14 -0400 |
|---|---|---|
| committer | Kristian Høgsberg <krh@bitplanet.net> | 2013-06-17 09:24:14 -0400 |
| commit | 091b09652aa3a9d0d3d2f82a6529276d49a2012e (patch) | |
| tree | c1706951c2e43f4b918c4d3bef4c2f91e3ebb309 /src/animation.c | |
| parent | 7eec9b32f74bd571a5817a293f4edfe58a2c4290 (diff) | |
| download | weston-091b09652aa3a9d0d3d2f82a6529276d49a2012e.tar.gz | |
spring: Make min/max part of spring parameters
Don't hard code the 0.0 - 1.0 spring envelope.
Diffstat (limited to 'src/animation.c')
| -rw-r--r-- | src/animation.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/src/animation.c b/src/animation.c index 57d384d2..b8de5748 100644 --- a/src/animation.c +++ b/src/animation.c @@ -42,6 +42,8 @@ weston_spring_init(struct weston_spring *spring, spring->previous = current; spring->target = target; spring->clip = WESTON_SPRING_OVERSHOOT; + spring->min = 0.0; + spring->max = 1.0; } WL_EXPORT void @@ -77,22 +79,26 @@ weston_spring_update(struct weston_spring *spring, uint32_t msec) break; case WESTON_SPRING_CLAMP: - if (spring->current >= 1.0) { - spring->current = 1.0; - spring->previous = 1.0; - } else if (spring->current <= 0.0) { - spring->current = 0.0; - spring->previous = 0.0; + if (spring->current > spring->max) { + spring->current = spring->max; + spring->previous = spring->max; + } else if (spring->current < 0.0) { + spring->current = spring->min; + spring->previous = spring->min; } break; case WESTON_SPRING_BOUNCE: - if (spring->current >= 1.0) { - spring->current = 2.0 - spring->current; - spring->previous = 2.0 - spring->previous; - } else if (spring->current <= 0.0) { - spring->current = -spring->current; - spring->previous = -spring->previous; + if (spring->current > spring->max) { + spring->current = + 2 * spring->max - spring->current; + spring->previous = + 2 * spring->max - spring->previous; + } else if (spring->current < spring->min) { + spring->current = + 2 * spring->min - spring->current; + spring->previous = + 2 * spring->min - spring->previous; } break; } |