The product of vectors used by Shader in Unity - Code World

The product of vectors used by Shader in Unity

Enterprise 2023-10-01 04:37:55 views: null

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Preface
1. Multiplication of vectors
- 1. Dot product
- 2. Difference product
2. Dot product (the result is a scalar)
- 1. Mathematical representation
- 2. Geometric representation
3. Cross product
- 1. The result of the vector cross product is perpendicular to the two multiplied vectors.
- 2. Method to judge the positive and negative direction of the result: right-hand rule

Preface

Dot product of vectors used by Shader in Unity

1. Multiplication of vectors

1. Dot product

2. Difference product

2. Dot product (the result is a scalar)

1. Mathematical representation

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2. Geometric representation

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One sentence summary: Dot product of two vectors = Projection value of one vector on the other vector * Modulus length of the other vector

Note: The dot product of vectors is mainly used in lighting models

3. Cross product

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1. The result of the vector cross product is perpendicular to the two multiplied vectors.

2. Method to judge the positive and negative direction of the result: right-hand rule

The index finger points to the first vector, the middle finger points to the second vector, and the thumb is the direction of the result vector.

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Origin blog.csdn.net/qq_51603875/article/details/133243183

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