Mercurial > sdl-ios-xcode
view test/common.h @ 3496:78fc8ea578b2
Joe 2009-11-23 21:31:10 PST
If type is ::SDL_HAPTIC_CARTESIAN, direction is encoded by three positions
367 * (X axis, Y axis and Z axis (with 3 axes)). ::SDL_HAPTIC_CARTESIAN
uses
368 * the first three \c dir parameters. The cardinal directions would
be:
369 * - North: 0,-1, 0
370 * - East: -1, 0, 0
371 * - South: 0, 1, 0
372 * - West: 1, 0, 0
typedef struct SDL_HapticDirection
{
Uint8 type; /**< The type of encoding. */
Uint16 dir[3]; /**< The encoded direction. */
} SDL_HapticDirection;
An unsigned int can't store negative values and I don't see an alternate way to
encode them in the docs or source. The best I have been able to come up with is
using a negative magnitude for the effect but this will only get me 2 of the 4
quadrants in the plane for 2d effects. I looked at the win32 and linux
implementations and I believe is is safe to use signed ints in the direction
struct. I am unfamiliar with the darwin haptics API so I don't know if it is
safe.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 27 Nov 2009 19:29:27 +0000 |
| parents | 55541ddf13e3 |
| children | f0b7bc1fe12d |
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/* A simple test program framework */ #include "SDL.h" #define DEFAULT_WINDOW_WIDTH 640 #define DEFAULT_WINDOW_HEIGHT 480 #define VERBOSE_VIDEO 0x00000001 #define VERBOSE_MODES 0x00000002 #define VERBOSE_RENDER 0x00000004 #define VERBOSE_EVENT 0x00000008 #define VERBOSE_AUDIO 0x00000010 typedef struct { /* SDL init flags */ char **argv; Uint32 flags; Uint32 verbose; /* Video info */ const char *videodriver; int display; const char *window_title; Uint32 window_flags; int window_x; int window_y; int window_w; int window_h; int depth; int refresh_rate; int num_windows; SDL_WindowID *windows; /* Renderer info */ const char *renderdriver; Uint32 render_flags; SDL_bool skip_renderer; /* Audio info */ const char *audiodriver; SDL_AudioSpec audiospec; /* GL settings */ int gl_red_size; int gl_green_size; int gl_blue_size; int gl_alpha_size; int gl_buffer_size; int gl_depth_size; int gl_stencil_size; int gl_double_buffer; int gl_accum_red_size; int gl_accum_green_size; int gl_accum_blue_size; int gl_accum_alpha_size; int gl_stereo; int gl_multisamplebuffers; int gl_multisamplesamples; int gl_retained_backing; int gl_accelerated; int gl_major_version; int gl_minor_version; } CommonState; extern CommonState *CommonCreateState(char **argv, Uint32 flags); extern int CommonArg(CommonState * state, int index); extern const char *CommonUsage(CommonState * state); extern SDL_bool CommonInit(CommonState * state); extern void CommonEvent(CommonState * state, SDL_Event * event, int *done); extern void CommonQuit(CommonState * state);