在照明技巧中，有 2 种算法规则用于在屏幕上绘制一条线，即DDA代表数字差分分析仪算法规则和 Bresenham 线算法。
DDA 算法和 Bresenham 线算法的主要区别在于，DDA 算法规则使用浮动目的值，而在 Bresenham 中，使用球形关闭函数。
DDA 算法规则涉及乘法和除法，而在 bresenham 算法规则中，加法和减法是执行最多的运算。
我们来看看DDA算法和Bresenham画线算法的区别：
| S.NO | DDA Line Algorithm | Bresenham line Algorithm |
|---|---|---|
| 1. | DDA stands for Digital Differential Analyzer. | While it has no full form. |
| 2. | DDA algorithm is less efficient than Bresenham line algorithm. | While it is more efficient than DDA algorithm. |
| 3. | The calculation speed of DDA algorithm is less than Bresenham line algorithm. | While the calculation speed of Bresenham line algorithm is faster than DDA algorithm. |
| 4. | DDA algorithm is costlier than Bresenham line algorithm. | While Bresenham line algorithm is cheaper than DDA algorithm. |
| 5. | DDA algorithm has less precision or accuracy. | While it has more precision or accuracy. |
| 6. | In DDA algorithm, the complexity of calculation is more complex. | While in this, the complexity of calculation is simple. |
| 7. | In DDA algorithm, optimization is not provided. | While in this, optimization is provided. |