IFoxCad画圆Jig示例，包括2点画圆和3点画圆
本帖最后由 d1742647821 于 2023-2-9 18:20 编辑画圆Jig示例，包括2点画圆和3点画圆
帮助大家学习使用IFox
public static class TestClass
{
public static void DrawCircle()
{
var ppo1=new PromptPointOptions("\n指定圆的圆心或") { AllowNone= true };
ppo1.Keywords.Add("3P", "3P", "三点(3P)");
ppo1.Keywords.Add("2P", "2P", "两点(2P)");
var ed = Env.Editor;
var r1 = ed.GetPoint(ppo1);
if (r1.Status == PromptStatus.Keyword)
{
switch (r1.StringResult)
{
case "3P":
DrawCircle3P();
return;
case "2P":
DrawCircle2P();
return;
}
}
else if (r1.Status!=PromptStatus.OK)
return;
var pt1 = r1.Value.Ucs2Wcs();
var circle = new Circle(pt1,Vector3d.ZAxis, 1);
circle.SetDatabaseDefaults();
bool isRaidus = true;
using var jig = new JigEx((mpw, _) =>
{
var dist = pt1.DistanceTo(new Point3d(mpw.X, mpw.Y, pt1.Z));
if (dist > 0)
circle.Radius = isRaidus? dist:dist*0.5;
});
jig.DatabaseEntityDraw(wd=>wd.Geometry.Draw(circle));
var jppo= jig.SetOptions(pt1,msg:"\n指定圆的半径或");
jppo.Keywords.Add("D","D","直径(D)");
while (true)
{
var r2 = ed.Drag(jig);
if (r2.Status == PromptStatus.Keyword&&r2.StringResult.ToUpper()=="D")
{
isRaidus = false;
circle.Radius*=0.5;
jppo.Keywords.Clear();
jppo.Message = "\n指定圆的直径";
continue;
}
if (r2.Status == PromptStatus.OK)
{
using var tr = new DBTrans();
tr.CurrentSpace.AddEntity(circle);
}
return;
}
}
private static void DrawCircle3P()
{
var ed = Env.Editor;
var r1 = ed.GetPoint("\n指定圆上的第一个点");
if(r1.Status!=PromptStatus.OK)
return;
var pt1 = r1.Value.Ucs2Wcs();
var r2 = ed.GetPoint("\n指定圆上的第二个点");
if(r2.Status!=PromptStatus.OK)
return;
var pt2=r2.Value.Ucs2Wcs().SetZ(pt1.Z);
if(pt1==pt2)
return;
var circle = new Circle();
var right=false;
var angle = pt1.GetAngle(pt2)%Math.PI;
using var jig = new JigEx((mpw, _) =>
{
var pt3 = mpw.SetZ(pt1.Z);
if(pt3==pt1||pt3==pt2 || Math.Abs(angle - pt1.GetAngle(pt3) % Math.PI) < 1e-6)
{
right = false;
return;
}
var cr3d = new CircularArc3d(pt1, pt2, pt3);
circle.Radius=cr3d.Radius;
circle.Center=cr3d.Center;
circle.Normal=cr3d.Normal;
right=true;
});
jig.DatabaseEntityDraw(wd =>
{
if (right)
wd.Geometry.Draw(circle);
});
var jppo= jig.SetOptions("\n指定圆上的第三个点");
jppo.Keywords.Clear();
var r3 = ed.Drag(jig);
if(r3.Status!=PromptStatus.OK||!right)
return;
using var tr = new DBTrans();
tr.CurrentSpace.AddEntity(circle);
}
private static void DrawCircle2P()
{
var ed = Env.Editor;
var r1 = Env.Editor.GetPoint("\n指定圆直径的第一个端点");
if(r1.Status!=PromptStatus.OK)
return;
var pt1 = r1.Value.Ucs2Wcs();
var circle = new Circle();
circle.SetDatabaseDefaults();
bool right = false;
using var jig = new JigEx((mpw, _) =>
{
var pt2 = mpw.SetZ(pt1.Z);
if(pt1==pt2)
{
right = false;
return;
}
circle.Center = pt1.GetMidPointTo(pt2);
circle.Diameter = pt1.DistanceTo(pt2);
right=true;
});
jig.DatabaseEntityDraw(wd => wd.Geometry.Draw(circle));
jig.SetOptions(pt1, CursorType.Crosshair, "指定圆直径的第二个端点");
var r2=ed.Drag(jig);
if(r2.Status!=PromptStatus.OK||!right)
return;
using var tr = new DBTrans();
tr.CurrentSpace.AddEntity(circle);
}
private static Point3d SetZ(this Point3d pt, double z=0) => new (pt.X, pt.Y, z);
}
attach://124879.flv
感谢大佬分享 虽然啥也看不懂，还是感谢大佬分享。 谢谢楼主分享
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