利用DDA算法绘制两条直线,分别是:L1(Point(10, 10), Point(100, 80)), L2(Point(-50, 100), Point(100, -50))代码
时间: 2024-09-23 21:06:45 浏览: 30
利用Double Displacement Algorithm (DDA) 算法可以简单地在计算机上绘制二维直线条段。下面是一个基本的 Python 示例,展示了如何使用这个算法绘制给定的两条线段:
```python
def dda_draw(x1, y1, x2, y2):
dx = abs(x2 - x1)
dy = abs(y2 - y1)
steep = abs(dy) > dx
if steep:
x1, y1 = y1, x1
x2, y2 = y2, x2
if x1 > x2:
x1, x2 = x2, x1
y1, y2 = y2, y1
steps_x = int((x2 - x1) + 0.5)
steps_y = int((y2 - y1) + 0.5)
for i in range(steps_x + 1):
if steep:
print(chr(y1 + i), end="")
else:
print(chr(x1 + i), end="")
if (i * dy >= dx):
if steep:
print(chr(y2 + i), end="")
else:
print(chr(x2 + i), end="")
# 绘制第一条线段 L1
dda_draw(10, 10, 100, 80)
# 绘制第二条线段 L2
dda_draw(-50, 100, 100, -50)
# 结束绘制
print()