diff options
Diffstat (limited to 'native/jni/src/geometry_utils.h')
-rw-r--r-- | native/jni/src/geometry_utils.h | 58 |
1 files changed, 32 insertions, 26 deletions
diff --git a/native/jni/src/geometry_utils.h b/native/jni/src/geometry_utils.h index ada889e11..65611b9ba 100644 --- a/native/jni/src/geometry_utils.h +++ b/native/jni/src/geometry_utils.h @@ -20,36 +20,43 @@ #include <cmath> #define MAX_DISTANCE 10000000 -#define KEY_NUM 27 -#define SPACE_KEY 26 #define MAX_PATHS 2 #define DEBUG_DECODER false +#define M_PI_F 3.14159265f + namespace latinime { -static inline float sqr(float x) { +static inline float sqrf(float x) { return x * x; } -static inline float getNormalizedSqrDistance(int x1, int y1, int x2, int y2, int scale) { - return sqr((x1 - x2) * 1.0 / scale) + sqr((y1 - y2) * 1.0 / scale); +static inline float getNormalizedSqrDistanceFloat(int x1, int y1, int x2, int y2, int scale) { + return sqrf(static_cast<float>(x1 - x2) / static_cast<float>(scale)) + + sqrf(static_cast<float>(y1 - y2) / static_cast<float>(scale)); } -static inline int getDistance(int x1, int y1, int x2, int y2) { - return (int) sqrt(sqr(x2 - x1) + sqr(y2 - y1)); +static inline float getDistanceSqrFloat(float x1, float y1, float x2, float y2) { + return sqrf(x2 - x1) + sqrf(y2 - y1); } -static inline float getDistanceSq(float x1, float y1, float x2, float y2) { - return sqr(x2 - x1) + sqr(y2 - y1); +static inline int getDistanceInt(int x1, int y1, int x2, int y2) { + return static_cast<int>( + sqrtf(getDistanceSqrFloat( + static_cast<float>(x1), static_cast<float>(y1), + static_cast<float>(x2), static_cast<float>(y2)))); } static inline float getAngle(int x1, int y1, int x2, int y2) { - float dx = x1 - x2; - float dy = y1 - y2; - if (dx == 0 && dy == 0) + int dx = x1 - x2; + int dy = y1 - y2; + if (dx == 0 && dy == 0) { return 0; - return atan2(dy, dx); + } + float dxf = static_cast<float>(dx); + float dyf = static_cast<float>(dy); + return atan2f(dyf, dxf); } static inline float angleDiff(float a1, float a2) { @@ -57,21 +64,22 @@ static inline float angleDiff(float a1, float a2) { if (diff < 0) { diff = -diff; } - if (diff > M_PI) { - return 2 * M_PI - diff; + if (diff > M_PI_F) { + return 2.0f * M_PI_F - diff; } return diff; } -//static float pointToLineDistanceSq(float x, float y, float x1, float y1, float x2, float y2) { -// float A = x - x1; -// float B = y - y1; -// float C = x2 - x1; -// float D = y2 - y1; -// return abs(A * D - C * B) / sqrt(C * C + D * D); -//} +// static float pointToLineDistanceSqrFloat( +// float x, float y, float x1, float y1, float x2, float y2) { +// float A = x - x1; +// float B = y - y1; +// float C = x2 - x1; +// float D = y2 - y1; +// return abs(A * D - C * B) / sqrt(C * C + D * D); +// } -static inline float pointToLineSegDistanceSq( +static inline float pointToLineSegDistanceSqrFloat( float x, float y, float x1, float y1, float x2, float y2) { float ray1x = x - x1; float ray1y = y - y1; @@ -93,9 +101,7 @@ static inline float pointToLineSegDistanceSq( projectionX = x1 + projectionLengthSq * ray2x; projectionY = y1 + projectionLengthSq * ray2y; } - - float dist = getDistanceSq(x, y, projectionX, projectionY); - return dist; + return getDistanceSqrFloat(x, y, projectionX, projectionY); } } // namespace latinime #endif // LATINIME_INCREMENTAL_GEOMETRY_UTILS_H |