Simple Line Based on the simple slope-intercept algorithm from algebra y = m x + b ``` public void lineSimple(int x0, int y0, int x1, int y1, Color color) { int pix = color.getRGB(); int dx = x1 - x0; int dy = y1 - y0; raster.setPixel(pix, x0, y0); if (dx != 0) { float m = (float) dy / (float) dx; float b = y0 - m*x0; dx = (x1 > x0) ? 1 : -1; while (x0 != x1) { x0 += dx; y0 = Math.round(m*x0 + b); raster.setPixel(pix, x0, y0); } } } ``` Lecture 5 Slide 4 6.837 Fall '98

The first line-drawing algorithm presented is called the simple slope-intercept algorithm. It is a striaght forward implementation of the slope-intercept formula for a line.
```    public void lineSimple(int x0, int y0, int x1, int y1, Color color)
{
int pix = color.getRGB();
int dx = x1 - x0;
int dy = y1 - y0;

raster.setPixel(pix, x0, y0);
if (dx != 0) {
float m = (float) dy / (float) dx;
float b = y0 - m*x0;
dx = (x1 > x0) ? 1 : -1;
while (x0 != x1) {
x0 += dx;
y0 = Math.round(m*x0 + b);
raster.setPixel(pix, x0, y0);
}
}
}
```