mathe/Library/PackageCache/com.unity.timeline@1.7.5/Samples~/Customization/Text/TextTrackMixerBehaviour.cs

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2024-09-20 20:30:10 +02:00
#if TEXT_TRACK_REQUIRES_TEXTMESH_PRO
using TMPro;
using UnityEngine;
using UnityEngine.Playables;
namespace Timeline.Samples
{
// The runtime instance of a the TextTrack. It is responsible for blending and setting the final data
// on the Text binding
public class TextTrackMixerBehaviour : PlayableBehaviour
{
Color m_DefaultColor;
float m_DefaultFontSize;
string m_DefaultText;
TMP_Text m_TrackBinding;
// Called every frame that the timeline is evaluated. ProcessFrame is invoked after its' inputs.
public override void ProcessFrame(Playable playable, FrameData info, object playerData)
{
SetDefaults(playerData as TMP_Text);
if (m_TrackBinding == null)
return;
int inputCount = playable.GetInputCount();
Color blendedColor = Color.clear;
float blendedFontSize = 0f;
float totalWeight = 0f;
float greatestWeight = 0f;
string text = m_DefaultText;
for (int i = 0; i < inputCount; i++)
{
float inputWeight = playable.GetInputWeight(i);
ScriptPlayable<TextPlayableBehaviour> inputPlayable = (ScriptPlayable<TextPlayableBehaviour>)playable.GetInput(i);
TextPlayableBehaviour input = inputPlayable.GetBehaviour();
blendedColor += input.color * inputWeight;
blendedFontSize += input.fontSize * inputWeight;
totalWeight += inputWeight;
// use the text with the highest weight
if (inputWeight > greatestWeight)
{
text = input.text;
greatestWeight = inputWeight;
}
}
// blend to the default values
m_TrackBinding.color = Color.Lerp(m_DefaultColor, blendedColor, totalWeight);
m_TrackBinding.fontSize = Mathf.RoundToInt(Mathf.Lerp(m_DefaultFontSize, blendedFontSize, totalWeight));
m_TrackBinding.text = text;
}
// Invoked when the playable graph is destroyed, typically when PlayableDirector.Stop is called or the timeline
// is complete.
public override void OnPlayableDestroy(Playable playable)
{
RestoreDefaults();
}
void SetDefaults(TMP_Text text)
{
if (text == m_TrackBinding)
return;
RestoreDefaults();
m_TrackBinding = text;
if (m_TrackBinding != null)
{
m_DefaultColor = m_TrackBinding.color;
m_DefaultFontSize = m_TrackBinding.fontSize;
m_DefaultText = m_TrackBinding.text;
}
}
void RestoreDefaults()
{
if (m_TrackBinding == null)
return;
m_TrackBinding.color = m_DefaultColor;
m_TrackBinding.fontSize = m_DefaultFontSize;
m_TrackBinding.text = m_DefaultText;
}
}
}
#endif