276 lines
8.2 KiB
C#
276 lines
8.2 KiB
C#
using UnityEngine;
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using System.Collections.Generic;
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public enum WaveformType
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{
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Sine,
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Square,
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Triangle,
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Sawtooth,
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Noise,
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Composite,
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Pulse,
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}
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[RequireComponent(typeof(LineRenderer))]
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public class WaveformVisualizer : MonoBehaviour
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{
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private int samples = 1024;
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[HideInInspector]
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public float amplitude = 0.4f;
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public float spatialFrequency = 1f;
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public float temporalFrequency = 0.1f;
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private float targetWaveformNoiseAmplitude = 0.1f;
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public float noiseAmplitude = 0.5f;
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[Range(0f, 1f)]
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[HideInInspector]
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public float clarity = 0f;
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public Color noiseColor = Color.gray;
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public Color clearColor = Color.green;
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private LineRenderer lineRenderer;
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private SpriteRenderer spriteRenderer;
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private float spriteWidth;
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private float spriteHeight;
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[HideInInspector]
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public float[] waveformData;
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private float[] noiseData;
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[HideInInspector]
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public float[] displayData;
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private float[] antiWaveformData;
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[HideInInspector]
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public WaveformType waveformType = WaveformType.Sine;
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public float amplitudeModulationFrequency = 0.5f;
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public float amplitudeModulationDepth = 0.5f;
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public float phaseShift = 0f; // 相位偏移
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private bool isCaptured = false; // 是否已拍照（冻结波形）
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private int spikeIndex; // 单个突刺位置
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private bool isCorrect=true;
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private bool isSpikeIndexSet = false; // 标志位，判断 spikeIndex 是否已设置
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void Start()
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{
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lineRenderer = GetComponent<LineRenderer>();
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lineRenderer.positionCount = samples;
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lineRenderer.useWorldSpace = false;
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spriteRenderer = GetComponentInParent<SpriteRenderer>();
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if (spriteRenderer != null)
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{
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spriteWidth = spriteRenderer.bounds.size.x;
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spriteHeight = spriteRenderer.bounds.size.y;
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lineRenderer.sortingLayerID = spriteRenderer.sortingLayerID;
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lineRenderer.sortingOrder = spriteRenderer.sortingOrder + 2;
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}
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else
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{
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Debug.LogError("Could not find SpriteRenderer in parent object.");
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}
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waveformData = new float[samples];
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noiseData = new float[samples];
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displayData = new float[samples];
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antiWaveformData = new float[samples];
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DrawWaveform(); // 初始化波形
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}
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void Update()
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{
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GenerateNoiseData();
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GenerateWaveformData();
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if (phaseShift > 0)
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{
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GenerateAntiWaveformData();
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}
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for (int i = 0; i < samples; i++)
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{
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displayData[i] = Mathf.Lerp(noiseData[i], waveformData[i], clarity);
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if (phaseShift > 0)
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{
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displayData[i] += antiWaveformData[i];
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}
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}
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DrawWaveform();
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}
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void GenerateNoiseData()
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{
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float adjustedNoiseAmplitude = Mathf.Lerp(noiseAmplitude, targetWaveformNoiseAmplitude, clarity);
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for (int i = 0; i < samples; i++)
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{
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noiseData[i] = Random.Range(-adjustedNoiseAmplitude, adjustedNoiseAmplitude);
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}
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}
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void GenerateWaveformData()
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{
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for (int i = 0; i < samples; i++)
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{
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float t = (float)i / samples;
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waveformData[i] = GetWaveformValue(t, 0) * clarity;
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}
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if(!isCorrect)
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{
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GenerateErrorData();
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}
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}
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private void GenerateErrorData()
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{
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if (isSpikeIndexSet) return; // 如果已设置，则不再随机
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float threshold = 0.9f; // 80% 的阈值
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// 找到波形数据中的最大绝对值
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float maxAmplitude = 0f;
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for (int i = 0; i < samples; i++)
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{
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maxAmplitude = Mathf.Max(maxAmplitude, Mathf.Abs(waveformData[i]));
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}
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// 计算超过 80% 最大值的阈值
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float amplitudeThreshold = maxAmplitude * threshold;
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// 找到所有超过阈值的点
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List<int> candidateIndices = new List<int>();
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for (int i = 0; i < samples; i++)
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{
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if (Mathf.Abs(waveformData[i]) > amplitudeThreshold)
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{
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candidateIndices.Add(i);
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}
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}
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// 随机选择一个满足条件的点作为 spikeIndex
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if (candidateIndices.Count > 0)
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{
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int randomIndex = Random.Range(0, candidateIndices.Count);
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spikeIndex = candidateIndices[randomIndex];
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isSpikeIndexSet = true; // 标志位设为 true，表示已设置过 spikeIndex
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}
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else
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{
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spikeIndex = 0; // 如果没有找到满足条件的点，则默认为 0
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isSpikeIndexSet = true; // 即使没有找到满足条件的点，也将标志位设为 true
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}
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}
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public void SetError()
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{
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isCorrect=false;
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}
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float GetWaveformValue(float t, float phaseOffset)
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{
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float time = Time.time * temporalFrequency;
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float amplitudeModulation = 1f + amplitudeModulationDepth * Mathf.Sin(2f * Mathf.PI * amplitudeModulationFrequency * Time.time);
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float angle = t * Mathf.PI * 2f * spatialFrequency + phaseOffset;
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float value = 0f;
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switch (waveformType)
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{
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case WaveformType.Sine:
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value = Mathf.Sin(angle);
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break;
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case WaveformType.Square:
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value = Mathf.Sign(Mathf.Sin(angle));
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break;
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case WaveformType.Triangle:
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value = Mathf.PingPong(angle / Mathf.PI, 2f) - 1f;
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break;
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case WaveformType.Sawtooth:
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value = ((angle / (Mathf.PI * 2f)) % 1f) * 2f - 1f;
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break;
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case WaveformType.Pulse:
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value = Mathf.PingPong(angle / Mathf.PI, 2f) > 1f ? 1f : -1f;
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break;
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case WaveformType.Noise:
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value = Mathf.PerlinNoise(angle / (Mathf.PI * 2f), Time.time * temporalFrequency) * 2f - 1f;
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break;
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case WaveformType.Composite:
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value = Mathf.Sin(angle) + Mathf.Sin(angle * 2f) * 0.5f;
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break;
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default:
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value = 0f;
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break;
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}
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return value * amplitude * amplitudeModulation;
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}
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void GenerateAntiWaveformData()
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{
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for (int i = 0; i < samples; i++)
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{
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float t = (float)i / samples;
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antiWaveformData[i] = -GetWaveformValue(t, phaseShift) * clarity;
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}
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}
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void DrawWaveform()
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{
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int spikeRadius = 20; // 扩大扰动的半径
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for (int i = 0; i < samples; i++)
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{
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float x = ((float)i / (samples - 1)) * spriteWidth - (spriteWidth / 2f);
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float amplitudeScale = Mathf.Lerp(0.2f, 1f, clarity);
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float y = displayData[i] * amplitudeScale * (spriteHeight / 2f);
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if(!isCorrect)
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{
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int distanceToSpike = Mathf.Abs(i - spikeIndex);
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if (distanceToSpike <= spikeRadius)
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{
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float attenuation = 1f - (float)distanceToSpike / spikeRadius;
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attenuation *= 0.9f; // 降低扰动强度
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float baseAmplitude = displayData[i] * amplitudeScale * (spriteHeight / 2f);
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float randomRange = (Mathf.Abs(baseAmplitude) - amplitude / 2f) * attenuation;
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if (Mathf.Abs(baseAmplitude) < amplitude / 2)
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{
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float randomOffset = Random.Range(-randomRange, randomRange);
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y += randomOffset; // 对 Y 值进行随机扰动
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}
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}
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}
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Vector3 position = new Vector3(x, y, 0);
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lineRenderer.SetPosition(i, position);
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}
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Color waveColor = Color.Lerp(noiseColor, clearColor, clarity);
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lineRenderer.startColor = waveColor;
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lineRenderer.endColor = waveColor;
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float startWidth = Mathf.Lerp(0.02f, 0.05f, clarity);
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lineRenderer.startWidth = startWidth;
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lineRenderer.endWidth = startWidth;
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}
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// 应用相位偏移
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public void SetPhaseShift(float phaseShiftValue)
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{
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phaseShift = phaseShiftValue;
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}
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// 重置波形
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public void ResetWaveform()
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{
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isCaptured = false;
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phaseShift = 0f;
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spikeIndex=0;
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isCorrect=true;
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isSpikeIndexSet = false;
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}
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}
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