Unity

Unity常用API整理

Vector

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Constructor

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Vector3 vector = new Vector3(0f, 0f, 0f);

長度

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float length = vectorA.magnitude;

Normalized

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Vector3 v = vectorA.normalized;

距離

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float distance = Vector3.Distance(Vector3 vectorA, Vector3 vectorB);

向量間夾角

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float angle = Vector3.Angle(Vector3 vectorFrom, Vector3 vectorTo);

內積

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float res = Vector3.Dot(Vector3 vectorA, Vector3 vectorB);

外積

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Vector3 res = Vector3.Cross(Vector3 vectorA, Vector3 vectorB).normalized;

Quaternion

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Constructor

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Quaternion q = new Quaternion();
Quaternion q = Quaternion.identity;
Quaternion q = Quaternion.Euler(0, 0, 0);

EulerAngle

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Vector3 rotations = quaternion.eulerAngles;

兩向量間的旋轉

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quaternion.SetFromToRotation(Vector3 vectorFrom, Vector3 vectorTo);

看向某向量

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quaternion.SetLookRotation(Vector3 vectorView, Vector3 vectorUp=Vector3.up);

旋轉向量

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Vector3 direction = Quaternion.Euler(0, 90, 0) * vectorA;

Mathf

Constant

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float pi = Mathf.PI;
float epsilon = Mathf.Epsilon;
float rad = deg * Mathf.Deg2Rad;
float inf = Mathf.Infinity;

Clamp

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float clamp = Mathf.Clamp(float value, float min, float max);

Abs

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float abs = Mathf.Abs(float value);

Min, Max

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float max = Mathf.Max(float valueA, float valueB);
float min = Mathf.Min(float valueA, float valueB);

Sign

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float sign = Mathf.Sign(float value);

Random

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Random

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float rnd = Random.Range(float min, float max);