relocated source code to the root

1 files changed, 48 insertions, 0 deletions

diff --git a/src/util.cpp b/src/util.cpp
new file mode 100644
index 0000000..64716d2
--- /dev/null
+++ b/src/util.cpp
@@ -0,0 +1,48 @@
+#include "util.h"
+
+float bezierInterpolate(float dist, float c0, float c1, float c2, float c3) {
+    float distp = 1 - dist;
+    return	(distp*distp*distp) * c0 +
+            3 * (distp*distp) * dist * c1 +
+            3 * (dist*dist) * distp * c2 +
+            (dist*dist*dist) * c3;
+}
+
+QPointF bezierInterpolateFull (float dist, QPointF c0, QPointF c1, QPointF c2, QPointF c3) {
+    return QPointF(bezierInterpolate (dist, c0.x(), c1.x(), c2.x(), c3.x()),
+                   bezierInterpolate (dist, c0.y(), c1.y(), c2.y(), c3.y()));
+}
+
+
+float roundToNearest(float stepSize, float val) {
+    if (stepSize==0.0f) return val;
+    else return round(val/stepSize)*stepSize;
+}
+
+float radiansToDegrees (float radians) {
+    return (radians * 180.0f) / M_PI;
+}
+
+float degreesToRadians(float degrees) {
+    return (degrees * M_PI) / 180.0f;
+}
+
+int normaliseAngleDeg (int degrees) {
+    while (degrees > 180) {
+        degrees -= 360;
+    }
+    while (degrees <= -180) {
+        degrees += 360;
+    }
+    return degrees;
+}
+
+float normaliseAngleRad (float rads) {
+    while (rads > M_PI) {
+        rads -= 2 * M_PI;
+    }
+    while (rads <= -M_PI) {
+        rads += 2 * M_PI;
+    }
+    return rads;
+}