二维图形投影变换包括平移、旋转、缩放、错切、仿射变换、透视变换代码
时间: 2023-07-03 19:30:40 浏览: 261
以下是 Python 代码实现二维图形投影变换:
1. 平移变换:
```python
import numpy as np
def translation(tx, ty):
return np.array([[1, 0, tx], [0, 1, ty], [0, 0, 1]])
```
2. 旋转变换:
```python
import numpy as np
def rotation(theta):
cos = np.cos(theta)
sin = np.sin(theta)
return np.array([[cos, -sin, 0], [sin, cos, 0], [0, 0, 1]])
```
3. 缩放变换:
```python
import numpy as np
def scaling(sx, sy):
return np.array([[sx, 0, 0], [0, sy, 0], [0, 0, 1]])
```
4. 错切变换:
```python
import numpy as np
def shearing(shx, shy):
return np.array([[1, shx, 0], [shy, 1, 0], [0, 0, 1]])
```
5. 仿射变换:
```python
import numpy as np
def affine(a, b, tx, c, d, ty):
return np.array([[a, b, tx], [c, d, ty], [0, 0, 1]])
```
6. 透视变换:
```python
import numpy as np
def perspective(px, py):
return np.array([[1, 0, 0], [0, 1, 0], [px, py, 1]])
```
以上是各种二维图形投影变换的 Python 代码实现。
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