(#85) Updated linear movementtype to return nanoseconds

Nanoseconds instead of milliseconds allow for higher resolution

Author: s1hofmann

Diff for: lib/movementtype.function.ts

@@ -1,14 +1,15 @@
 export const linear = (
-  amountOfSteps: number,
-  speedInPixelsPerSecond: number,
+    amountOfSteps: number,
+    speedInPixelsPerSecond: number,
 ): number[] => {
-  const timeSteps = [];
-  let stepDuration = Math.floor((1 / speedInPixelsPerSecond) * 1000);
-  if (stepDuration <= 0) {
-    stepDuration = 1;
-  }
-  for (let idx = 0; idx < amountOfSteps; ++idx) {
-    timeSteps.push(stepDuration);
-  }
-  return timeSteps;
+    const timeSteps = [];
+    // Duration per movement step in nanoseconds
+    let stepDuration = (1 / speedInPixelsPerSecond) * 1_000_000_000;
+    if (stepDuration <= 0) {
+        stepDuration = 0;
+    }
+    for (let idx = 0; idx < amountOfSteps; ++idx) {
+        timeSteps.push(stepDuration);
+    }
+    return timeSteps;
 };