diff options
| author | Jean-Philippe Bruyère <jp_bruyere@hotmail.com> | 2018-03-14 12:33:40 +0100 |
|---|---|---|
| committer | Jean-Philippe Bruyère <jp_bruyere@hotmail.com> | 2018-03-14 12:33:40 +0100 |
| commit | f24ed33faaa8d7db6822a9ff4c1eff57617caf83 (patch) | |
| tree | 4cfccee06d5b7a652f8aafae0f93b4a3c54c5670 /src/ExtensionsMethods.cs | |
| parent | 5f1d0213e0dadecc8f93d44e36ea3a11a1aa9baa (diff) | |
dragndrop of GObjs
Diffstat (limited to 'src/ExtensionsMethods.cs')
| -rw-r--r-- | src/ExtensionsMethods.cs | 70 |
1 files changed, 62 insertions, 8 deletions
diff --git a/src/ExtensionsMethods.cs b/src/ExtensionsMethods.cs index cb662c51..23196404 100644 --- a/src/ExtensionsMethods.cs +++ b/src/ExtensionsMethods.cs @@ -64,11 +64,9 @@ namespace Crow public static Cairo.PointD Multiply(this Cairo.PointD p1, double v){ return new Cairo.PointD(p1.X * v, p1.Y * v); } - public static void DrawCote(this Cairo.Context ctx, Cairo.PointD p1, Cairo.PointD p2, double stroke = 1.0) - { - const double arrowWidth = 4.0; - const double arrowLength = 10.0; - + public static void DrawCote(this Cairo.Context ctx, Cairo.PointD p1, Cairo.PointD p2, + double stroke = 1.0, bool fill = false, double arrowWidth = 3.0, double arrowLength = 7.0) + { Cairo.PointD vDir = p2.Substract(p1); vDir = vDir.GetNormalized (); Cairo.PointD vPerp = vDir.GetPerp (); @@ -80,21 +78,77 @@ namespace Crow ctx.MoveTo (p1); ctx.LineTo (pA0.Add (vA)); - ctx.LineTo (pA0.Substract (vA)); + if (fill) + ctx.LineTo (pA0.Substract (vA)); + else + ctx.MoveTo (pA0.Substract (vA)); + ctx.LineTo (p1); ctx.MoveTo (p2); ctx.LineTo (pA1.Add (vA)); - ctx.LineTo (pA1.Substract (vA)); + if (fill) + ctx.LineTo (pA1.Substract (vA)); + else + ctx.MoveTo (pA1.Substract (vA)); ctx.LineTo (p2); - ctx.Fill (); + if (fill) + ctx.Fill (); ctx.MoveTo (p1); ctx.LineTo (p2); ctx.LineWidth = stroke; ctx.Stroke (); + } + public static void DrawCoteInverse(this Cairo.Context ctx, Cairo.PointD p1, Cairo.PointD p2, + double stroke = 1.0, bool fill = false, double arrowWidth = 3.0, double arrowLength = 7.0) + { + Cairo.PointD vDir = p2.Substract(p1); + vDir = vDir.GetNormalized (); + Cairo.PointD vPerp = vDir.GetPerp (); + + Cairo.PointD pA0 = p1.Add(vDir.Multiply(arrowLength)); + Cairo.PointD pA1 = p2.Substract(vDir.Multiply(arrowLength)); + + Cairo.PointD vA = vPerp.Multiply (arrowWidth); + + ctx.MoveTo (p1.Add (vA)); + ctx.LineTo (pA0); + ctx.LineTo (p1.Substract (vA)); + if (fill) + ctx.LineTo (p1.Add (vA)); + + ctx.MoveTo (p2.Add (vA)); + ctx.LineTo (pA1); + ctx.LineTo (p2.Substract (vA)); + + if (fill) { + ctx.LineTo (p2.Add (vA)); + ctx.Fill (); + } + + ctx.MoveTo (pA0); + ctx.LineTo (pA1); + ctx.LineWidth = stroke; + ctx.Stroke (); + } + public static void DrawCoteFixed(this Cairo.Context ctx, Cairo.PointD p1, Cairo.PointD p2, + double stroke = 1.0, double coteWidth = 3.0) + { + Cairo.PointD vDir = p2.Substract(p1); + vDir = vDir.GetNormalized (); + Cairo.PointD vPerp = vDir.GetPerp (); + Cairo.PointD vA = vPerp.Multiply (coteWidth); + ctx.MoveTo (p1.Add (vA)); + ctx.LineTo (p1.Substract (vA)); + ctx.MoveTo (p2.Add (vA)); + ctx.LineTo (p2.Substract (vA)); + ctx.MoveTo (p1); + ctx.LineTo (p2); + ctx.LineWidth = stroke; + ctx.Stroke (); } public static void SetSourceColor(this Cairo.Context ctx, Color c) { |