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use SDL's functions version inplace of libc version

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Sylvain
2021-11-21 22:30:48 +01:00
committed by Sam Lantinga
parent 35b7ce1893
commit d31251b014
46 changed files with 114 additions and 124 deletions
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5
src/haptic/linux/SDL_syshaptic.c
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@@ -35,7 +35,6 @@
#include <fcntl.h> /* O_RDWR */
#include <limits.h> /* INT_MAX */
#include <errno.h> /* errno, strerror */
#include <math.h> /* atan2 */
#include <sys/stat.h> /* stat */
/* Just in case. */
@@ -713,10 +712,10 @@ SDL_SYS_ToDirection(Uint16 *dest, SDL_HapticDirection * src)
else {
float f = SDL_atan2(src->dir[1], src->dir[0]); /* Ideally we'd use fixed point math instead of floats... */
/*
atan2 takes the parameters: Y-axis-value and X-axis-value (in that order)
SDL_atan2 takes the parameters: Y-axis-value and X-axis-value (in that order)
- Y-axis-value is the second coordinate (from center to SOUTH)
- X-axis-value is the first coordinate (from center to EAST)
We add 36000, because atan2 also returns negative values. Then we practically
We add 36000, because SDL_atan2 also returns negative values. Then we practically
have the first spherical value. Therefore we proceed as in case
SDL_HAPTIC_SPHERICAL and add another 9000 to get the polar value.
--> add 45000 in total