public static void DrawLineOrtho(Vector2 p1, Vector2 p2, Color color, bool clip = true)
{
//p1 += ASUI.AbsPos(ASUI.owner);
//p2 += ASUI.AbsPos(ASUI.owner);
//p1 += MathTool.ReverseY(ASUI.owner.anchoredPosition);
//p2 += MathTool.ReverseY(ASUI.owner.anchoredPosition);
//clip
if (clip)
{
var rect = ASUI.Rect(ASUI.owner);
if (LineClip.ClipCohSuth(rect[0], rect[1], ref p1, ref p2) == LineClip.Result.discard)
{
return;
}
}
//normalize & flip y
p1.x /= ASUI.scaler.referenceResolution.x;
p1.y = ASUI.scaler.referenceResolution.y - p1.y;
p1.y /= ASUI.scaler.referenceResolution.y;
p2.x /= ASUI.scaler.referenceResolution.x;
p2.y = ASUI.scaler.referenceResolution.y - p2.y;
p2.y /= ASUI.scaler.referenceResolution.y;
GL.Begin(GL.LINES);
GL.Color(color);
GL.Vertex(p1);
GL.Vertex(p2);
GL.End();
}
// 控制粗细的线条实际是画四边形，不一定与坐标轴垂直。
public static void DrawLineWidth(Vector2 p1, Vector2 p2, float width, Color color, bool clip = true)
{
//p1 += MathTool.ReverseY(ASUI.owner.anchoredPosition);
//p2 += MathTool.ReverseY(ASUI.owner.anchoredPosition);
//clip
if (clip)
{
var rect = ASUI.Rect(ASUI.owner);
if (LineClip.ClipCohSuth(rect[0], rect[1], ref p1, ref p2) == LineClip.Result.discard)
{
return;
}
}
var v = p2 - p1;
var v2 = p1 - p2;
width *= 0.5f;
var p1a = p1 + new Vector2(-v.y, v.x).normalized *width;
var p1b = p1 + new Vector2(v.y, -v.x).normalized *width;
var p2a = p2 + new Vector2(-v2.y, v2.x).normalized *width;
var p2b = p2 + new Vector2(v2.y, -v2.x).normalized *width;
//四边形可能切成更多边形，暂时没做画多边形功能因此暂不裁剪宽度，只裁剪长度
DrawQuads(p1a, p1b, p2a, p2b, color);
}