Version: 2018.3 (switch to 2019.1b or 2017.4)
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  • C#

MinMaxGradient

struct in UnityEngine

/

Implemented in:UnityEngine.ParticleSystemModule

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Description

MinMaxGradient contains two Gradients, and returns a Color based on ParticleSystem.MinMaxGradient.mode. Depending on the mode, the Color returned may be randomized. Gradients are edited via the ParticleSystem Inspector once a ParticleSystemGradientMode requiring them has been selected. Some modes do not require gradients, only colors.

See Also: ParticleSystem.

using UnityEngine;

// This example shows setting a constant color value. public class ConstantColorExample : MonoBehaviour { ParticleSystem myParticleSystem; ParticleSystem.ColorOverLifetimeModule colorModule;

void Start() { // Get the system and the color module. myParticleSystem = GetComponent<ParticleSystem>(); colorModule = myParticleSystem.colorOverLifetime;

GetValue(); SetValue(); }

void GetValue() { print("The constant color is " + colorModule.color.color); }

void SetValue() { colorModule.color = Color.red; } }
using UnityEngine;

// This example shows using 2 colors to drive the color over lifetime. public class TwoConstantColorsExample : MonoBehaviour { ParticleSystem myParticleSystem; ParticleSystem.ColorOverLifetimeModule colorModule;

void Start() { // Get the system and the color module. myParticleSystem = GetComponent<ParticleSystem>(); colorModule = myParticleSystem.colorOverLifetime;

GetValue(); SetValue(); }

void GetValue() { print(string.Format("The constant values are: min {0} max {1}.", colorModule.color.colorMin, colorModule.color.colorMax)); }

void SetValue() { colorModule.color = new ParticleSystem.MinMaxGradient(Color.green, Color.red); } }
using UnityEngine;

// This example shows using a gradient to drive the color over lifetime. public class GradientColorExample : MonoBehaviour { ParticleSystem myParticleSystem; ParticleSystem.ColorOverLifetimeModule colorModule; Gradient ourGradient;

void Start() { // Get the system and the color module. myParticleSystem = GetComponent<ParticleSystem>(); colorModule = myParticleSystem.colorOverLifetime;

// A simple 2 color gradient with a fixed alpha of 1.0f. float alpha = 1.0f; ourGradient = new Gradient(); ourGradient.SetKeys( new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) }, new GradientAlphaKey[] { new GradientAlphaKey(alpha, 0.0f), new GradientAlphaKey(alpha, 1.0f) } );

// Apply the gradient. colorModule.color = ourGradient;

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

void ModifyGradient() { // Reduce the alpha float alpha = 0.5f; ourGradient.SetKeys( new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) }, new GradientAlphaKey[] { new GradientAlphaKey(alpha, 0.0f), new GradientAlphaKey(alpha, 1.0f) } );

// Apply the changed gradient. colorModule.color = ourGradient; } }
using UnityEngine;

// This example shows using 2 gradients to drive the color over lifetime. public class TwoGradientColorExample : MonoBehaviour { ParticleSystem myParticleSystem; ParticleSystem.ColorOverLifetimeModule colorModule;

Gradient ourGradientMin; Gradient ourGradientMax;

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

// A simple 2 color gradient with a fixed alpha of 1.0f. float alpha1 = 1.0f; ourGradientMin = new Gradient(); ourGradientMin.SetKeys( new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) }, new GradientAlphaKey[] { new GradientAlphaKey(alpha1, 0.0f), new GradientAlphaKey(alpha1, 1.0f) } );

// A simple 2 color gradient with a fixed alpha of 0.0f. float alpha2 = 0.0f; ourGradientMax = new Gradient(); ourGradientMax.SetKeys( new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) }, new GradientAlphaKey[] { new GradientAlphaKey(alpha2, 0.0f), new GradientAlphaKey(alpha2, 1.0f) } );

// Apply the gradients. colorModule.color = new ParticleSystem.MinMaxGradient(ourGradientMin, ourGradientMax);

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

void ModifyGradient() { // Reduce the alpha float alpha = 0.5f; ourGradientMin.SetKeys( new GradientColorKey[] { new GradientColorKey(Color.green, 0.0f), new GradientColorKey(Color.red, 1.0f) }, new GradientAlphaKey[] { new GradientAlphaKey(alpha, 0.0f), new GradientAlphaKey(alpha, 1.0f) } );

// Apply the changed gradients. colorModule.color = new ParticleSystem.MinMaxGradient(ourGradientMin, ourGradientMax); } }

Properties

colorSet a constant color.
colorMaxSet a constant color for the upper bound.
colorMinSet a constant color for the lower bound.
gradientSet the gradient.
gradientMaxSet a gradient for the upper bound.
gradientMinSet a gradient for the lower bound.
modeSet the mode that the min-max gradient will use to evaluate colors.

Constructors

ParticleSystem.MinMaxGradientA single constant color for the entire gradient.

Public Methods

EvaluateManually query the gradient to calculate colors based on what mode it is in.

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