diff options
Diffstat (limited to 'native/jni/src')
-rw-r--r-- | native/jni/src/geometry_utils.h | 40 |
1 files changed, 19 insertions, 21 deletions
diff --git a/native/jni/src/geometry_utils.h b/native/jni/src/geometry_utils.h index 168542e45..deb042525 100644 --- a/native/jni/src/geometry_utils.h +++ b/native/jni/src/geometry_utils.h @@ -28,38 +28,36 @@ namespace latinime { -static inline float sqrf(float x) { +static inline float squareFloat(float x) { return x * x; } -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 float getNormalizedSquaredDistanceFloat(float x1, float y1, float x2, float y2, + float scale) { + return squareFloat((x1 - x2) / scale) + squareFloat((y1 - y2) / scale); } -static inline float getDistanceSqrFloat(float x1, float y1, float x2, float y2) { - return sqrf(x2 - x1) + sqrf(y2 - y1); +static inline float getSquaredDistanceFloat(float x1, float y1, float x2, float y2) { + return squareFloat(x1 - x2) + squareFloat(y1 - y2); +} + +static inline float getDistanceFloat(float x1, float y1, float x2, float y2) { + return hypotf(x1 - x2, y1 - y2); } 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)))); + return static_cast<int>(getDistanceFloat(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) { const int dx = x1 - x2; const int dy = y1 - y2; - if (dx == 0 && dy == 0) { - return 0; - } - const float dxf = static_cast<float>(dx); - const float dyf = static_cast<float>(dy); - return atan2f(dyf, dxf); + if (dx == 0 && dy == 0) return 0; + return atan2f(static_cast<float>(dy), static_cast<float>(dx)); } -static inline float angleDiff(float a1, float a2) { +static inline float getAngleDiff(float a1, float a2) { const float diff = fabsf(a1 - a2); if (diff > M_PI_F) { return 2.0f * M_PI_F - diff; @@ -67,7 +65,7 @@ static inline float angleDiff(float a1, float a2) { return diff; } -// static float pointToLineDistanceSqrFloat( +// static float pointToLineSegSquaredDistanceFloat( // float x, float y, float x1, float y1, float x2, float y2) { // float A = x - x1; // float B = y - y1; @@ -76,7 +74,7 @@ static inline float angleDiff(float a1, float a2) { // return fabsf(A * D - C * B) / sqrtf(C * C + D * D); // } -static inline float pointToLineSegDistanceSqrFloat( +static inline float pointToLineSegSquaredDistanceFloat( float x, float y, float x1, float y1, float x2, float y2) { const float ray1x = x - x1; const float ray1y = y - y1; @@ -84,7 +82,7 @@ static inline float pointToLineSegDistanceSqrFloat( const float ray2y = y2 - y1; const float dotProduct = ray1x * ray2x + ray1y * ray2y; - const float lineLengthSqr = sqrf(ray2x) + sqrf(ray2y); + const float lineLengthSqr = squareFloat(ray2x) + squareFloat(ray2y); const float projectionLengthSqr = dotProduct / lineLengthSqr; float projectionX; @@ -99,7 +97,7 @@ static inline float pointToLineSegDistanceSqrFloat( projectionX = x1 + projectionLengthSqr * ray2x; projectionY = y1 + projectionLengthSqr * ray2y; } - return getDistanceSqrFloat(x, y, projectionX, projectionY); + return getSquaredDistanceFloat(x, y, projectionX, projectionY); } } // namespace latinime #endif // LATINIME_GEOMETRY_UTILS_H |