With these pixel coordinates, we can draw lines emanating from the the points, recolor them, connect them, fill the surrounding area with color, or anything else GD can do.
使用这些像素坐标，我们可以绘制以这些点为起点的直线，重新设定直线的颜色、连接直线、用颜色填充周围的区域或者 GD 可以执行的任何其他操作。
You also find that each line, each vertex has an echo, it expands to something else; a change of color or texture, or a simple line drawn over the floor. Another gesture that connects with the whole.
你还会发现每个线条和每个顶点都有回应，它扩展到别的东西：可能是颜色或纹理的改变，或者是地板上画的简单线条，它们都以另一种姿态与整体相连。
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