128 lines
2.6 KiB
Ucode
128 lines
2.6 KiB
Ucode
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/**
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* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
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*/
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class CurveEdPreset_SineWave extends CurveEdPresetBase
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native
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editinlinenew
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hidecategories(Object);
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/** The frequency of the wave */
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var() float Frequency;
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/** The scale of the wave */
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var() float Scale;
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/** The offset of the wave */
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var() float Offset;
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/** Virtual function to get the user-readable name for the curve */
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function string GetDisplayName()
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{
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local string RetVal;
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RetVal = "SineWave";
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return RetVal;
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}
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/** Virtual function to verify the settings are valid */
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function bool AreSettingsValid(bool bIsSaving)
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{
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if ((Frequency <= 0.0) || (Scale == 0.0))
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{
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return false;
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}
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return true;
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}
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/** Virtual function to get the required KeyIn times*/
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function bool GetRequiredKeyInTimes(out array<float> RequiredKeyInTimes)
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{
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local bool bRetval;
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local int GenerateCount;
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local int PointIndex;
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local float StepSize;
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local float Freq;
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local float SourceValue;
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bRetval = true;
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GenerateCount = 0;
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if (Frequency == 0)
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{
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Freq = 1;
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}
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else
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{
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Freq = Frequency;
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}
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GenerateCount = (4 * Freq) + 1;
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RequiredKeyInTimes.Insert(0, GenerateCount);
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StepSize = 1.0f / (GenerateCount - 1);
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SourceValue = 0.0f;
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for (PointIndex = 0; PointIndex < GenerateCount; PointIndex++)
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{
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RequiredKeyInTimes[PointIndex] = SourceValue;
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SourceValue += StepSize;
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}
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return bRetval;
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}
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/** Virtual function to generate curve */
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function bool GenerateCurve(out array<float> RequiredKeyInTimes, out array<PresetGeneratedPoint> GeneratedPoints)
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{
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local bool bRetval;
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local int GenerateCount;
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local int PointIndex;
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local float Freq;
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local float SourceValue;
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bRetval = true;
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if (Frequency == 0)
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{
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Freq = 1;
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}
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else
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{
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Freq = Frequency;
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}
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GenerateCount = RequiredKeyInTimes.Length;
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GeneratedPoints.Insert(0, GenerateCount);
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/***
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`Log("Generated Data for " $ GetDisplayName());
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***/
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for (PointIndex = 0; PointIndex < GenerateCount; PointIndex++)
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{
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SourceValue = RequiredKeyInTimes[PointIndex];
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GeneratedPoints[PointIndex].KeyIn = SourceValue;
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GeneratedPoints[PointIndex].KeyOut = sin(360.0 * DegToRad * Freq * SourceValue) * Scale + Offset;
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GeneratedPoints[PointIndex].TangentsValid = false;
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GeneratedPoints[PointIndex].IntepMode = CIM_CurveAuto;
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/***
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`Log(" Key " $ PointIndex $ " - " $ SourceValue $ " - " $ GeneratedPoints[PointIndex].KeyOut);
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***/
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}
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return bRetval;
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}
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/** */
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cpptext
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{
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}
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/** */
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defaultproperties
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{
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Frequency=1.0
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Scale=1.0
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Offset=0.0
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}
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