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Diffstat (limited to 'src/gestures.h')
| -rw-r--r-- | src/gestures.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/gestures.h b/src/gestures.h new file mode 100644 index 00000000..896f3028 --- /dev/null +++ b/src/gestures.h @@ -0,0 +1,107 @@ +/********************************************************************************************** +* +* raylib Gestures System - Gestures Detection and Usage Functions (Android and HTML5) +* +* Copyright (c) 2015 Marc Palau and Ramon Santamaria +* +* This software is provided "as-is", without any express or implied warranty. In no event +* will the authors be held liable for any damages arising from the use of this software. +* +* Permission is granted to anyone to use this software for any purpose, including commercial +* applications, and to alter it and redistribute it freely, subject to the following restrictions: +* +* 1. The origin of this software must not be misrepresented; you must not claim that you +* wrote the original software. If you use this software in a product, an acknowledgment +* in the product documentation would be appreciated but is not required. +* +* 2. Altered source versions must be plainly marked as such, and must not be misrepresented +* as being the original software. +* +* 3. This notice may not be removed or altered from any source distribution. +* +**********************************************************************************************/ + +#ifndef GESTURES_H +#define GESTURES_H + +#ifndef PI + #define PI 3.14159265358979323846 +#endif + +#define DEG2RAD (PI / 180.0f) +#define RAD2DEG (180.0f / PI) + +//---------------------------------------------------------------------------------- +// Defines and Macros +//---------------------------------------------------------------------------------- +//... + +//---------------------------------------------------------------------------------- +// Types and Structures Definition +// NOTE: Below types are required for GESTURES_STANDALONE usage +//---------------------------------------------------------------------------------- +#ifndef __cplusplus + // Boolean type + typedef enum { false, true } bool; +#endif + +// Vector2 type +typedef struct Vector2 { + float x; + float y; +} Vector2; + +// Gestures type +// NOTE: It could be used as flags to enable only some gestures +typedef enum { + GESTURE_NONE = 1, + GESTURE_TAP = 2, + GESTURE_DOUBLETAP = 4, + GESTURE_HOLD = 8, + GESTURE_DRAG = 16, + GESTURE_SWIPE_RIGHT = 32, + GESTURE_SWIPE_LEFT = 64, + GESTURE_SWIPE_UP = 128, + GESTURE_SWIPE_DOWN = 256, + GESTURE_PINCH_IN = 512, + GESTURE_PINCH_OUT = 1024 +} Gestures; + +#ifdef __cplusplus +extern "C" { // Prevents name mangling of functions +#endif + +//---------------------------------------------------------------------------------- +// Global Variables Definition +//---------------------------------------------------------------------------------- +//... + +//---------------------------------------------------------------------------------- +// Module Functions Declaration +//---------------------------------------------------------------------------------- +int GetTouchX(void); // Returns touch position X (relative to screen size) +int GetTouchY(void); // Returns touch position Y (relative to screen size) +Vector2 GetTouchPosition(void); // Returns touch position XY (relative to screen size) + +#if defined(PLATFORM_WEB) +void InitGesturesSystem(void); // Init gestures system (web) +#elif defined(PLATFORM_ANDROID) +void InitGesturesSystem(struct android_app *app); // Init gestures system (android) +#endif +void UpdateGestures(void); // Update gestures detected (must be called every frame) +bool IsGestureDetected(void); // Check if a gesture have been detected +int GetGestureType(void); // Get latest detected gesture +void SetGesturesEnabled(unsigned int gestureFlags); // Enable a set of gestures using flags + +float GetGestureDragIntensity(void); // Get gesture drag intensity +float GetGestureDragAngle(void); // Get gesture drag angle +Vector2 GetGestureDragVector(void); // Get gesture drag vector +int GetGestureHoldDuration(void); // Get gesture hold time in frames +float GetGesturePinchDelta(void); // Get gesture pinch delta +float GetGesturePinchAngle(void); // Get gesture pinch angle + +#ifdef __cplusplus +} +#endif + +#endif // GESTURES_H |