编写平面三维图的编程方法有多种,以下是一些常用的编程语言和工具及其示例代码:
C语言
使用C语言和OpenGL库可以绘制三维图形。以下是一个简单的示例代码,展示如何使用C语言绘制一个三维图形的主视图、俯视图和侧视图:
```c
include
void zu() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
gluLookAt(0, 1, 2, 0, 0, 0, 0, 1, 0);
glColor3f(1, 1, 1);
glBegin(GL_LINES);
glColor3f(0, 0, 0);
glVertex3f(-1, -1, -1);
glVertex3f(1, 1, 1);
glEnd();
glutSwapBuffers();
}
void fu() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
gluLookAt(0, 0, 2, 0, 0, 0, 0, 1, 0);
glColor3f(1, 1, 1);
glBegin(GL_LINES);
glColor3f(0, 0, 0);
glVertex3f(-1, -1, -1);
glVertex3f(1, 1, 1);
glEnd();
glutSwapBuffers();
}
void zo() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
gluLookAt(0, 0, 0, 0, 1, 0, 0, 0, 1);
glColor3f(1, 1, 1);
glBegin(GL_LINES);
glColor3f(0, 0, 0);
glVertex3f(-1, -1, -1);
glVertex3f(1, 1, 1);
glEnd();
glutSwapBuffers();
}
int main(int argc, char argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); glutInitWindowSize(800, 600); glutCreateWindow("3D Graphics"); glutDisplayFunc(zu); glutDisplayFunc(fu); glutDisplayFunc(zo); glutMainLoop(); return 0; } ``` Python
Python有许多用于三维绘图的库,如Matplotlib、Mayavi和Plotly。以下是一个使用Matplotlib绘制三维曲面的示例代码:
```python
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
创建数据
x = np.linspace(-5, 5, 100)
y = np.linspace(-5, 5, 100)
X, Y = np.meshgrid(x, y)
Z = np.sin(np.sqrt(X2 + Y2))
创建图形和轴
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
绘制曲面
ax.plot_surface(X, Y, Z, cmap='coolwarm')
设置轴标签
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
显示图形
plt.show()
```
MATLAB
MATLAB提供了强大的三维绘图功能。以下是一个使用MATLAB绘制三维曲面的示例代码: