/
RetimeProcessor.cs
145 lines (118 loc) · 5 KB
/
RetimeProcessor.cs
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using UnityEngine;
namespace UnityEditor.VFXToolbox.ImageSequencer
{
class RetimeProcessor : GPUFrameProcessor<RetimeProcessorSettings>
{
CurveDrawer m_CurveDrawer;
public RetimeProcessor(FrameProcessorStack processorStack, ProcessorInfo info)
: base("Packages/com.unity.vfx-toolbox/ImageSequencer/Editor/Shaders/Blend.shader", processorStack, info)
{
if(m_CurveDrawer == null)
{
m_CurveDrawer = new CurveDrawer("Retime Curve", 0.0f, 1.0f, 0.0f, InputSequence.length, 140, false);
m_CurveDrawer.AddCurve(m_SerializedObject.FindProperty("curve"), new Color(0.5f, 0.75f, 1.0f), "Retime Curve");
m_CurveDrawer.OnPostGUI = OnCurveFieldGUI;
}
if (settings.curve.keys.Length < 2)
{
settings.curve.AddKey(new Keyframe(0, 0));
settings.curve.AddKey(new Keyframe(1, 24));
}
}
public bool CurveEquals(AnimationCurve target)
{
for (int i = 0; i < target.keys.Length; i++)
{
if (target[i].time != settings.curve[i].time ||
target[i].value != settings.curve[i].value ||
target[i].inTangent != settings.curve[i].inTangent ||
target[i].outTangent != settings.curve[i].outTangent)
{
return false;
}
}
return true;
}
public override int GetProcessorSequenceLength()
{
if (InputSequence.length > 0)
return m_SerializedObject.FindProperty("outputSequenceLength").intValue;
else
return 0;
}
public override bool Process(int frame)
{
int inputlength = InputSequence.length;
int outputlength = GetProcessorSequenceLength();
float t = (float)frame / outputlength;
float Frame;
if (settings.useCurve)
Frame = settings.curve.Evaluate(t);
else
Frame = t * inputlength;
float blendFactor = Frame % 1.0f;
int Prev = Mathf.Clamp((int)Mathf.Floor(Frame),0,inputlength-1);
int Next = Mathf.Clamp((int)Mathf.Ceil(Frame),0,inputlength-1);
Texture prevtex = InputSequence.RequestFrame(Prev).texture;
Texture nexttex = InputSequence.RequestFrame(Next).texture;
m_Material.SetTexture("_MainTex", prevtex);
m_Material.SetTexture("_AltTex", nexttex);
m_Material.SetFloat("_BlendFactor", blendFactor);
ExecuteShaderAndDump(frame, prevtex);
return true;
}
public override string GetLabel()
{
return string.Format("{0} ({1} frames)",GetName(), settings.outputSequenceLength);
}
public override string GetName()
{
return "Retime";
}
protected override bool DrawSidePanelContent(bool hasChanged)
{
var useCurve = m_SerializedObject.FindProperty("useCurve");
var outputSequenceLength = m_SerializedObject.FindProperty("outputSequenceLength");
EditorGUI.BeginChangeCheck();
int length = outputSequenceLength.intValue;
int newlength = EditorGUILayout.IntSlider(VFXToolboxGUIUtility.Get("Sequence Length"), length,1,InputSequence.length);
if(newlength != length)
{
outputSequenceLength.intValue = newlength;
}
EditorGUILayout.PropertyField(useCurve, VFXToolboxGUIUtility.Get("Use Retiming Curve"));
if(settings.useCurve)
{
m_CurveDrawer.SetBounds(new Rect(0,0,1,InputSequence.length - 1));
if(m_CurveDrawer.OnGUILayout())
{
hasChanged = true;
}
}
if(EditorGUI.EndChangeCheck())
{
hasChanged = true;
}
return hasChanged;
}
void OnCurveFieldGUI(Rect renderArea, Rect curveArea)
{
float seqRatio = -1.0f;
if(m_ProcessorStack.imageSequencer.previewCanvas.sequence.processor == this)
{
seqRatio = (m_ProcessorStack.imageSequencer.previewCanvas.numFrames > 1)? (float) m_ProcessorStack.imageSequencer.previewCanvas.currentFrameIndex / (m_ProcessorStack.imageSequencer.previewCanvas.numFrames - 1) : 0.0f;
}
// If previewing current sequence : draw trackbar
if(seqRatio >= 0.0f)
{
Handles.color = Color.white;
Handles.DrawLine(new Vector3(curveArea.xMin + seqRatio * curveArea.width, renderArea.yMin), new Vector3(curveArea.xMin + seqRatio * curveArea.width, renderArea.yMax));
}
}
public override bool OnCanvasGUI(ImageSequencerCanvas canvas)
{
// Empty, for now;
return false;
}
}
}