MinMaxCurve

描述

最小值-最大值曲线的脚本接口。

最小值-最大值曲线描述的函数采用最小值和最大值之间的值，并基于 ParticleSystem.MinMaxCurve.mode 返回值。根据模式，可能返回随机值。 对于需要曲线的模式，返回值取决于在 ParticleSystem Inspector 中设计的一条或两条曲线，这些曲线可以计算得到介于 -n 与 n 之间的单个值，其中 n 是也在 Inspector 中设置的常量。请参阅 ParticleSystemCurveMode 以了解更多信息。

另请参阅：ParticleSystem。

using UnityEngine;

// This example shows setting a constant rate value.
public class ConstantRateExample : MonoBehaviour
{
    ParticleSystem myParticleSystem;
    ParticleSystem.EmissionModule emissionModule;

    void Start()
    {
        // Get the system and the emission module.
        myParticleSystem = GetComponent<ParticleSystem>();
        emissionModule = myParticleSystem.emission;

        GetValue();
        SetValue();
    }

    void GetValue()
    {
        print("The constant value is " + emissionModule.rateOverTime.constant);
    }

    void SetValue()
    {
        emissionModule.rateOverTime = 10.0f;
    }
}

using UnityEngine;

// This example shows using 2 constants to drive the rate.
public class TwoConstantsRateExample : MonoBehaviour
{
    ParticleSystem myParticleSystem;
    ParticleSystem.EmissionModule emissionModule;

    void Start()
    {
        // Get the system and the emission module.
        myParticleSystem = GetComponent<ParticleSystem>();
        emissionModule = myParticleSystem.emission;

        GetValue();
        SetValue();
    }

    void GetValue()
    {
        print(string.Format("The constant values are: min {0} max {1}.", emissionModule.rateOverTime.constantMin, emissionModule.rateOverTime.constantMax));
    }

    void SetValue()
    {
        emissionModule.rateOverTime = new ParticleSystem.MinMaxCurve(0.0f, 10.0f);
    }
}

using UnityEngine;

// This example shows using a curve to drive the rate.
public class CurveRateExample : MonoBehaviour
{
    ParticleSystem myParticleSystem;
    ParticleSystem.EmissionModule emissionModule;

    // We can "scale" the curve with this value. It gets multiplied by the curve.
    public float scalar = 1.0f;

    AnimationCurve ourCurve;

    void Start()
    {
        // Get the system and the emission module.
        myParticleSystem = GetComponent<ParticleSystem>();
        emissionModule = myParticleSystem.emission;

        // A simple linear curve.
        ourCurve = new AnimationCurve();
        ourCurve.AddKey(0.0f, 0.0f);
        ourCurve.AddKey(1.0f, 1.0f);

        // Apply the curve.
        emissionModule.rateOverTime = new ParticleSystem.MinMaxCurve(scalar, ourCurve);

        // In 5 seconds we will modify the curve.
        Invoke("ModifyCurve", 5.0f);
    }

    void ModifyCurve()
    {
        // Add a key to the current curve.
        ourCurve.AddKey(0.5f, 0.0f);

        // Apply the changed curve.
        emissionModule.rate = new ParticleSystem.MinMaxCurve(scalar, ourCurve);
    }
}

using UnityEngine;

// This example shows using 2 curves to drive the rate.
public class TwoCurveRateExample : MonoBehaviour
{
    ParticleSystem myParticleSystem;
    ParticleSystem.EmissionModule emissionModule;

    AnimationCurve ourCurveMin;
    AnimationCurve ourCurveMax;

    // We can "scale" the curves with this value. It gets multiplied by the curves.
    public float scalar = 1.0f;

    void Start()
    {
        // Get the system and the emission module.
        myParticleSystem = GetComponent<ParticleSystem>();
        emissionModule = myParticleSystem.emission;

        // A horizontal straight line at value 1.
        ourCurveMin = new AnimationCurve();
        ourCurveMin.AddKey(0.0f, 1.0f);
        ourCurveMin.AddKey(1.0f, 1.0f);

        // A horizontal straight line at value 0.5.
        ourCurveMax = new AnimationCurve();
        ourCurveMax.AddKey(0.0f, 0.5f);
        ourCurveMax.AddKey(1.0f, 0.5f);

        // Apply the curves.
        emissionModule.rateOverTime = new ParticleSystem.MinMaxCurve(scalar, ourCurveMin, ourCurveMax);

        // In 5 seconds we will modify the curve.
        Invoke("ModifyCurve", 5.0f);
    }

    void ModifyCurve()
    {
        // Create a "pinch" point.
        ourCurveMin.AddKey(0.5f, 0.7f);
        ourCurveMax.AddKey(0.5f, 0.6f);

        // Apply the changed curve.
        emissionModule.rateOverTime = new ParticleSystem.MinMaxCurve(scalar, ourCurveMin, ourCurveMax);
    }
}

using UnityEngine;

// This example shows how to retrieve existing keys from a MinMaxCurve
public class ReadCurveExample : MonoBehaviour
{
    void Start()
    {
        // Get the system and the emission module.
        var myParticleSystem = GetComponent<ParticleSystem>();
        var emissionModule = myParticleSystem.emission;

        // Get the curve (assuming the MinMaxCurve is in Curve mode)
        AnimationCurve curve = emissionModule.rateOverTime.curve;

        // Get the keys
        Keyframe[] keys = curve.keys;
    }
}

变量

构造函数

公共函数