public static int Bake(ref Keyframe[] keys, float frameRate, InterpolationMode mode = InterpolationMode.Auto)
{
var nativeKeys = new NativeArray <Keyframe>(keys, Allocator.Temp);
float duration = keys[keys.Length - 1].time - keys[0].time;
int frameCount = (int)math.ceil(frameRate * duration);
var bakedKeys = new NativeArray <Keyframe>(frameCount, Allocator.Temp);
ThreadSafe.Bake(nativeKeys, frameRate, bakedKeys, new SampleRange()
{
startFrameIndex = 0, numFrames = frameCount
});
switch (mode)
{
case InterpolationMode.Linear:
KeyframeUtilities.AlignTangentsLinear(bakedKeys);
break;
case InterpolationMode.Auto:
KeyframeUtilities.AlignTangentsSmooth(bakedKeys);
break;
case InterpolationMode.ClampedAuto:
KeyframeUtilities.AlignTangentsClamped(bakedKeys);
break;
default:
throw new System.InvalidOperationException("Not Implemented");
}
keys = bakedKeys.ToArray();
bakedKeys.Dispose();
return(frameCount);
}
static public float ReduceWithMaximumAbsoluteError(ref Keyframe[] keyframes, float maxError)
{
int numKeys = keyframes.Length;
var newKeyFrames = new List <Keyframe>(numKeys);
int prevKeyIndex = 0;
int currentKeyIndex = 1;
int nextKeyIndex = 2;
float conversionError = 0.0f;
newKeyFrames.Add(keyframes[0]);
while (nextKeyIndex < (numKeys))
{
Keyframe prev = keyframes[prevKeyIndex];
Keyframe next = keyframes[nextKeyIndex];
for (int i = currentKeyIndex; i > prevKeyIndex; i--)
{
Keyframe test = keyframes[i];
float value = KeyframeUtilities.Evaluate(test.time, prev, next);
float error = math.abs(value - test.value);
if (error >= maxError)
{
newKeyFrames.Add(keyframes[currentKeyIndex]);
prevKeyIndex = currentKeyIndex;
}
}
currentKeyIndex++;
nextKeyIndex++;
}
newKeyFrames.Add(keyframes[numKeys - 1]);
keyframes = newKeyFrames.ToArray();
return(conversionError);
}
public static int Bake(AnimationCurve curve, float frameRate, InterpolationMode mode)
{
var keys = new NativeArray <Keyframe>(curve.keys, Allocator.Temp);
float duration = keys[keys.Length - 1].time - keys[0].time;
int frameCount = (int)math.ceil(frameRate * duration);
var bakedKeys = new NativeArray <Keyframe>(frameCount, Allocator.Temp);
switch (mode)
{
case InterpolationMode.Linear:
KeyframeUtilities.AlignTangentsLinear(bakedKeys);
break;
case InterpolationMode.Auto:
KeyframeUtilities.AlignTangentsSmooth(bakedKeys);
break;
case InterpolationMode.ClampedAuto:
KeyframeUtilities.AlignTangentsClamped(bakedKeys);
break;
default:
throw new System.InvalidOperationException("Not Implemented");
}
curve.keys = bakedKeys.ToArray();
keys.Dispose();
bakedKeys.Dispose();
return(frameCount);
}
public void Bake_Keyframes_IsAccurateInBetweenKeys()
{
var frames = new Keyframe[]
{
new Keyframe(0, 0),
new Keyframe(1, 1),
new Keyframe(2, 2),
new Keyframe(3, 3),
new Keyframe(4, 4),
new Keyframe(5, 5)
};
var newFrames = new Keyframe[6];
frames.CopyTo(newFrames, 0);
AnimationCurveBake.Bake(ref newFrames, 30);
int index1 = 0;
int index2 = 0;
float deltaTime = 5 / 900;
for (int i = 0; i < 900; i++)
{
float actual = KeyframeUtilities.Evaluate(i * deltaTime, ref index1, newFrames);
float expected = KeyframeUtilities.Evaluate(i * deltaTime, ref index2, frames);
Assert.AreEqual(expected, actual);
}
}
public void Bake_Keyframes_IsAccurateOnBakedKeys()
{
var frames = new Keyframe[]
{
new Keyframe(0, 0),
new Keyframe(1, 1),
new Keyframe(2, 2),
new Keyframe(3, 3),
new Keyframe(4, 4),
new Keyframe(5, 5)
};
var newFrames = new Keyframe[6];
frames.CopyTo(newFrames, 0);
AnimationCurveBake.Bake(ref newFrames, 30);
int seekIndex = 0;
for (int i = 0; i < newFrames.Length; i++)
{
float actual = KeyframeUtilities.Evaluate(newFrames[i].time, ref i, newFrames);
float expected = KeyframeUtilities.Evaluate(newFrames[i].time, ref seekIndex, frames);
Assert.AreEqual(expected, actual, 0.000001f);
}
}
public void Bake_LinearCurve_IsAccurate(AnimationCurveBake.InterpolationMode mode)
{
float frameRate = 7;
float sampleRate = 30;
var sourceCurve = AnimationCurve.Linear(0, 0, 5, 5);
var curveKeys = sourceCurve.keys;
var destCurve = new AnimationCurve(curveKeys);
float start = KeyframeUtilities.StartTime(curveKeys);
float end = KeyframeUtilities.EndTime(curveKeys);
float duration = end - start;
AnimationCurveBake.Bake(destCurve, frameRate, mode);
float delta = (end - start) / sampleRate;
int numSamples = (int)math.ceil(duration * frameRate) + 1;
for (int i = 0; i <= numSamples; i++)
{
float time = math.clamp(start + i * delta, start, end);
float expected = sourceCurve.Evaluate(time);
float actual = destCurve.Evaluate(time);
}
}
public void Seek_Forward(float time, int index, int expected, string message)
{
var frames = new Keyframe[]
{
new Keyframe(0, 0),
new Keyframe(1, 1),
new Keyframe(2, 2),
new Keyframe(3, 3),
new Keyframe(4, 4),
new Keyframe(5, 5),
};
Assert.AreEqual(expected, KeyframeUtilities.Seek(time, index, frames), message);
}
public void AlignTangents_Smooth_ProducesSame_LinearCurve(float start, float startValue, float end, float endValue)
{
var curve = AnimationCurve.Linear(start, startValue, end, endValue);
var keys = new NativeArray <Keyframe>(30, Allocator.Temp);
for (int i = 0; i < 30; i++)
{
float time = 1 / 30 * i;
keys[i] = new Keyframe(time, curve.Evaluate(time));
}
KeyframeUtilities.AlignTangentsSmooth(keys);
var alignedCurve = new AnimationCurve(keys.ToArray());
for (int i = 0; i < 60; i++)
{
float time = 1 / 60 * i;
Assert.AreEqual(curve.Evaluate(time), alignedCurve.Evaluate(time));
}
keys.Dispose();
}
