Refine break lines and half-outline drawing

Cad/DrawingStyleManager.cs

@@ -5,6 +5,8 @@ namespace CadParamPluging.Cad
 {
     internal sealed class DrawingStyleManager
     {
+        private const string BreakLineLinetypeName = "BREAK_THREE_SHORT_V2";
+
         public enum Role
         {
             OutlineBold,
@@ -40,6 +42,10 @@ namespace CadParamPluging.Cad
             try { ent.Layer = spec.LayerName; } catch { }
             try { ent.ColorIndex = 256; } catch { } // ByLayer
             try { ent.Linetype = "ByLayer"; } catch { }
+            if (role == Role.BreakLine)
+            {
+                try { ent.Linetype = BreakLineLinetypeName; } catch { }
+            }
             try { ent.LineWeight = LineWeight.ByLayer; } catch { }
         }
 
@@ -60,7 +66,7 @@ namespace CadParamPluging.Cad
                 case Role.PartContour:
                     return new LayerSpec { LayerName = "双点划线", DefaultLinetypeName = "PHANTOM", DefaultLineWeight = LineWeight.LineWeight015, DefaultColorIndex = 7 };
                 case Role.BreakLine:
-                    return new LayerSpec { LayerName = "截断线", DefaultLinetypeName = "PHANTOM", DefaultLineWeight = LineWeight.LineWeight015, DefaultColorIndex = 7 };
+                    return new LayerSpec { LayerName = "截断线", DefaultLinetypeName = BreakLineLinetypeName, DefaultLineWeight = LineWeight.LineWeight015, DefaultColorIndex = 7 };
                 case Role.Centerline:
                     return new LayerSpec { LayerName = "中心线", DefaultLinetypeName = "CENTER", DefaultLineWeight = LineWeight.LineWeight015, DefaultColorIndex = 7 };
                 case Role.Hidden:
@@ -171,6 +177,29 @@ namespace CadParamPluging.Cad
                     return;
                 }
 
+                if (linetypeName == BreakLineLinetypeName)
+                {
+                    lt.UpgradeOpen();
+                    var record = new LinetypeTableRecord
+                    {
+                        Name = BreakLineLinetypeName,
+                        AsciiDescription = "Long dash, three short dashes",
+                        PatternLength = 1.68,
+                        NumDashes = 8
+                    };
+                    record.SetDashLengthAt(0, 0.6);
+                    record.SetDashLengthAt(1, -0.18);
+                    record.SetDashLengthAt(2, 0.12);
+                    record.SetDashLengthAt(3, -0.18);
+                    record.SetDashLengthAt(4, 0.12);
+                    record.SetDashLengthAt(5, -0.18);
+                    record.SetDashLengthAt(6, 0.12);
+                    record.SetDashLengthAt(7, -0.18);
+                    lt.Add(record);
+                    _tr.AddNewlyCreatedDBObject(record, true);
+                    return;
+                }
+
                 try
                 {
                     _db.LoadLineTypeFile(linetypeName, "acad.lin");

Cad/RingMachinedRollingDrawer.cs

@@ -182,7 +182,7 @@ namespace CadParamPluging.Cad
                 {
                     FeatureDrivenDrawer.DrawRingSectionContourWithFillet(ctx, xInnerRight.Value, ox + visualOuterR, oy, H, unspecifiedFillet.Value);
                     
-                    FeatureDrivenDrawer.DrawHoleHorizontalLines(ctx, ox, xInnerRight.Value, oy, H, unspecifiedFillet.Value);
+                    DrawHoleHorizontalLinesWithLeftExtension(ctx, ox, xInnerRight.Value, oy, H, unspecifiedFillet.Value);
 
                     var sectionWidth = (ox + visualOuterR) - (xInnerRight.Value);
                     var maxR = Math.Min(sectionWidth * 0.5, H * 0.5);
@@ -450,16 +450,7 @@ namespace CadParamPluging.Cad
                 }
             }
 
-            var poly = new Polyline();
+            DrawOpenHalfOutlineWithLeftExtension(ctx, ox, oy, radius, height);
-            poly.AddVertexAt(0, new Point2d(ox, oy), 0, 0, 0);
-            poly.AddVertexAt(1, new Point2d(ox + radius, oy), 0, 0, 0);
-            poly.AddVertexAt(2, new Point2d(ox + radius, oy + height), 0, 0, 0);
-            poly.AddVertexAt(3, new Point2d(ox, oy + height), 0, 0, 0);
-            poly.Closed = false;
-
-            ctx.Style?.Apply(poly, DrawingStyleManager.Role.OutlineBold);
-            ctx.Btr.AppendEntity(poly);
-            ctx.Tr.AddNewlyCreatedDBObject(poly, true);
         }
 
         private static void DrawRingSymmetryAxis(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double height)
@@ -491,13 +482,72 @@ namespace CadParamPluging.Cad
 
             var line1 = new Line(new Point3d(ox, y0, 0), new Point3d(ox, y1, 0));
             ctx.Style?.Apply(line1, DrawingStyleManager.Role.BreakLine);
+            line1.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line1);
             ctx.Tr.AddNewlyCreatedDBObject(line1, true);
 
             var line2 = new Line(new Point3d(ox - lineSpacing, y0, 0), new Point3d(ox - lineSpacing, y1, 0));
             ctx.Style?.Apply(line2, DrawingStyleManager.Role.BreakLine);
+            line2.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line2);
             ctx.Tr.AddNewlyCreatedDBObject(line2, true);
+
+        }
+
+        private static void DrawHoleHorizontalLinesWithLeftExtension(FeatureDrivenDrawer.DrawingContext ctx, double xAxis, double xSectionLeft, double yBottom, double height, double filletR)
+        {
+            const double leftExtension = 10.0;
+            const double lineSpacing = 3.0;
+
+            var yTop = yBottom + height;
+            var maxR = Math.Min(100.0, height * 0.5);
+            var r = Math.Min(filletR, maxR);
+            var xTarget = r > 0.01 ? xSectionLeft + r : xSectionLeft;
+            var xLeft = xAxis - leftExtension;
+
+            DrawOutlineLine(ctx, xLeft, yBottom, xAxis - lineSpacing, yBottom);
+            DrawOutlineLine(ctx, xAxis, yBottom, xTarget, yBottom);
+            DrawOutlineLine(ctx, xLeft, yTop, xAxis - lineSpacing, yTop);
+            DrawOutlineLine(ctx, xAxis, yTop, xTarget, yTop);
+
+            DrawLeftCutCenterLine(ctx, xLeft, yBottom, height);
+        }
+
+        private static void DrawOpenHalfOutlineWithLeftExtension(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double radius, double height)
+        {
+            const double leftExtension = 10.0;
+            const double lineSpacing = 3.0;
+
+            var xLeft = ox - leftExtension;
+            var xBreakLeft = ox - lineSpacing;
+            var xRight = ox + radius;
+            var yTop = oy + height;
+
+            DrawOutlineLine(ctx, xLeft, oy, xBreakLeft, oy);
+            DrawOutlineLine(ctx, ox, oy, xRight, oy);
+            DrawOutlineLine(ctx, xRight, oy, xRight, yTop);
+            DrawOutlineLine(ctx, xRight, yTop, ox, yTop);
+            DrawOutlineLine(ctx, xBreakLeft, yTop, xLeft, yTop);
+
+            DrawLeftCutCenterLine(ctx, xLeft, oy, height);
+        }
+
+        private static void DrawOutlineLine(FeatureDrivenDrawer.DrawingContext ctx, double x1, double y1, double x2, double y2)
+        {
+            var line = new Line(new Point3d(x1, y1, 0), new Point3d(x2, y2, 0));
+            ctx.Style?.Apply(line, DrawingStyleManager.Role.OutlineBold);
+            ctx.Btr.AppendEntity(line);
+            ctx.Tr.AddNewlyCreatedDBObject(line, true);
+        }
+
+        private static void DrawLeftCutCenterLine(FeatureDrivenDrawer.DrawingContext ctx, double x, double yBottom, double height)
+        {
+            var yTop = yBottom + height;
+            var centerLine = new Line(new Point3d(x, yBottom - 5.0, 0), new Point3d(x, yTop + 5.0, 0));
+            ctx.Style?.Apply(centerLine, DrawingStyleManager.Role.Centerline);
+            centerLine.LinetypeScale = 8.0;
+            ctx.Btr.AppendEntity(centerLine);
+            ctx.Tr.AddNewlyCreatedDBObject(centerLine, true);
         }
 
         private static void DrawOuterDiameterDimensionHalf(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double radius, double height,
@@ -522,11 +572,13 @@ namespace CadParamPluging.Cad
                 ? baseText + $"\\X(%%c{FeatureDrivenDrawer.FormatDimNumber(diameterPrimeVal.Value)})"
                 : baseText;
 
+            const double leftExtension = 10.0;
+            var xLeft = ox - leftExtension;
             AddLinearDim(
                 ctx,
-                new Point3d(ox, oy, 0),
+                new Point3d(xLeft, oy, 0),
                 new Point3d(ox + radius, oy, 0),
-                new Point3d(ox + radius / 2, oy - 25, 0),
+                new Point3d((xLeft + ox + radius) / 2.0, oy - 25, 0),
                 0,
                 dimText,
                 ApplyHalfSideDimStyle);
@@ -565,11 +617,13 @@ namespace CadParamPluging.Cad
 
             double innerRadius = xInnerRight - oxAxis;
             var dimLineY = yBottom - 10;
+            const double leftExtension = 10.0;
+            var xLeft = oxAxis - leftExtension;
             AddLinearDim(
                 ctx,
-                new Point3d(oxAxis, yBottom, 0),
+                new Point3d(xLeft, yBottom, 0),
                 new Point3d(xInnerRight, yBottom + offsetY, 0),
-                new Point3d(oxAxis + innerRadius / 2, dimLineY, 0),
+                new Point3d((xLeft + xInnerRight) / 2.0, dimLineY, 0),
                 0,
                 dimText,
                 ApplyHalfSideDimStyle);

Cad/RingRawRollingDrawer.cs

@@ -185,7 +185,7 @@ namespace CadParamPluging.Cad
                 {
                     FeatureDrivenDrawer.DrawRingSectionContourWithFillet(ctx, xInnerRight.Value, ox + visualOuterR, oy, H, unspecifiedFillet.Value);
                     
-                    FeatureDrivenDrawer.DrawHoleHorizontalLines(ctx, ox, xInnerRight.Value, oy, H, unspecifiedFillet.Value);
+                    DrawHoleHorizontalLinesWithLeftExtension(ctx, ox, xInnerRight.Value, oy, H, unspecifiedFillet.Value);
 
                     var sectionWidth = (ox + visualOuterR) - (xInnerRight.Value);
                     var maxR = Math.Min(sectionWidth * 0.5, H * 0.5);
@@ -341,16 +341,7 @@ namespace CadParamPluging.Cad
                 }
             }
 
-            var poly = new Polyline();
+            DrawOpenHalfOutlineWithLeftExtension(ctx, ox, oy, radius, height);
-            poly.AddVertexAt(0, new Point2d(ox, oy), 0, 0, 0);
-            poly.AddVertexAt(1, new Point2d(ox + radius, oy), 0, 0, 0);
-            poly.AddVertexAt(2, new Point2d(ox + radius, oy + height), 0, 0, 0);
-            poly.AddVertexAt(3, new Point2d(ox, oy + height), 0, 0, 0);
-            poly.Closed = false;
-
-            ctx.Style?.Apply(poly, DrawingStyleManager.Role.OutlineBold);
-            ctx.Btr.AppendEntity(poly);
-            ctx.Tr.AddNewlyCreatedDBObject(poly, true);
         }
 
         private static void DrawRingSymmetryAxis(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double height)
@@ -382,13 +373,72 @@ namespace CadParamPluging.Cad
 
             var line1 = new Line(new Point3d(ox, y0, 0), new Point3d(ox, y1, 0));
             ctx.Style?.Apply(line1, DrawingStyleManager.Role.BreakLine);
+            line1.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line1);
             ctx.Tr.AddNewlyCreatedDBObject(line1, true);
 
             var line2 = new Line(new Point3d(ox - lineSpacing, y0, 0), new Point3d(ox - lineSpacing, y1, 0));
             ctx.Style?.Apply(line2, DrawingStyleManager.Role.BreakLine);
+            line2.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line2);
             ctx.Tr.AddNewlyCreatedDBObject(line2, true);
+
+        }
+
+        private static void DrawHoleHorizontalLinesWithLeftExtension(FeatureDrivenDrawer.DrawingContext ctx, double xAxis, double xSectionLeft, double yBottom, double height, double filletR)
+        {
+            const double leftExtension = 10.0;
+            const double lineSpacing = 3.0;
+
+            var yTop = yBottom + height;
+            var maxR = Math.Min(100.0, height * 0.5);
+            var r = Math.Min(filletR, maxR);
+            var xTarget = r > 0.01 ? xSectionLeft + r : xSectionLeft;
+            var xLeft = xAxis - leftExtension;
+
+            DrawOutlineLine(ctx, xLeft, yBottom, xAxis - lineSpacing, yBottom);
+            DrawOutlineLine(ctx, xAxis, yBottom, xTarget, yBottom);
+            DrawOutlineLine(ctx, xLeft, yTop, xAxis - lineSpacing, yTop);
+            DrawOutlineLine(ctx, xAxis, yTop, xTarget, yTop);
+
+            DrawLeftCutCenterLine(ctx, xLeft, yBottom, height);
+        }
+
+        private static void DrawOpenHalfOutlineWithLeftExtension(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double radius, double height)
+        {
+            const double leftExtension = 10.0;
+            const double lineSpacing = 3.0;
+
+            var xLeft = ox - leftExtension;
+            var xBreakLeft = ox - lineSpacing;
+            var xRight = ox + radius;
+            var yTop = oy + height;
+
+            DrawOutlineLine(ctx, xLeft, oy, xBreakLeft, oy);
+            DrawOutlineLine(ctx, ox, oy, xRight, oy);
+            DrawOutlineLine(ctx, xRight, oy, xRight, yTop);
+            DrawOutlineLine(ctx, xRight, yTop, ox, yTop);
+            DrawOutlineLine(ctx, xBreakLeft, yTop, xLeft, yTop);
+
+            DrawLeftCutCenterLine(ctx, xLeft, oy, height);
+        }
+
+        private static void DrawOutlineLine(FeatureDrivenDrawer.DrawingContext ctx, double x1, double y1, double x2, double y2)
+        {
+            var line = new Line(new Point3d(x1, y1, 0), new Point3d(x2, y2, 0));
+            ctx.Style?.Apply(line, DrawingStyleManager.Role.OutlineBold);
+            ctx.Btr.AppendEntity(line);
+            ctx.Tr.AddNewlyCreatedDBObject(line, true);
+        }
+
+        private static void DrawLeftCutCenterLine(FeatureDrivenDrawer.DrawingContext ctx, double x, double yBottom, double height)
+        {
+            var yTop = yBottom + height;
+            var centerLine = new Line(new Point3d(x, yBottom - 5.0, 0), new Point3d(x, yTop + 5.0, 0));
+            ctx.Style?.Apply(centerLine, DrawingStyleManager.Role.Centerline);
+            centerLine.LinetypeScale = 8.0;
+            ctx.Btr.AppendEntity(centerLine);
+            ctx.Tr.AddNewlyCreatedDBObject(centerLine, true);
         }
 
         private static void DrawOuterDiameterDimensionHalf(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double radius, double height,
@@ -413,11 +463,13 @@ namespace CadParamPluging.Cad
                 ? baseText + $"\\X(%%c{FeatureDrivenDrawer.FormatDimNumber(diameterPrimeVal.Value)})"
                 : baseText;
 
+            const double leftExtension = 10.0;
+            var xLeft = ox - leftExtension;
             AddLinearDim(
                 ctx,
-                new Point3d(ox, oy, 0),
+                new Point3d(xLeft, oy, 0),
                 new Point3d(ox + radius, oy, 0),
-                new Point3d(ox + radius / 2, oy - 25, 0),
+                new Point3d((xLeft + ox + radius) / 2.0, oy - 25, 0),
                 0,
                 dimText,
                 ApplyHalfSideDimStyle);
@@ -456,11 +508,13 @@ namespace CadParamPluging.Cad
 
             double innerRadius = xInnerRight - oxAxis;
             var dimLineY = yBottom - 10;
+            const double leftExtension = 10.0;
+            var xLeft = oxAxis - leftExtension;
             AddLinearDim(
                 ctx,
-                new Point3d(oxAxis, yBottom, 0),
+                new Point3d(xLeft, yBottom, 0),
                 new Point3d(xInnerRight, yBottom + offsetY, 0),
-                new Point3d(oxAxis + innerRadius / 2, dimLineY, 0),
+                new Point3d((xLeft + xInnerRight) / 2.0, dimLineY, 0),
                 0,
                 dimText,
                 ApplyHalfSideDimStyle);

Cad/ShaftRawFreeForgeRoundShaftDrawer.cs

@@ -79,7 +79,7 @@ namespace CadParamPluging.Cad
 
             // 判断是否需要断线
             bool needBreakLines = originalW > 150;
-            const double lineSpacing = 3.5;
+            const double lineSpacing = 3.0;
 
             // 计算平滑相切数据模型
             double arcHeight = H / 5.0;
@@ -506,7 +506,7 @@ namespace CadParamPluging.Cad
         /// </summary>
         private static void DrawBreakLines(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double width, double height)
         {
-            const double lineSpacing = 3.5;
+            const double lineSpacing = 3.0;
             const double extend = 5.0;
 
             double xBreak = ox + width / 4.0;
@@ -516,13 +516,16 @@ namespace CadParamPluging.Cad
 
             var line1 = new Line(new Point3d(xBreak, y0, 0), new Point3d(xBreak, y1, 0));
             ctx.Style?.Apply(line1, DrawingStyleManager.Role.BreakLine);
+            line1.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line1);
             ctx.Tr.AddNewlyCreatedDBObject(line1, true);
 
             var line2 = new Line(new Point3d(xBreak + lineSpacing, y0, 0), new Point3d(xBreak + lineSpacing, y1, 0));
             ctx.Style?.Apply(line2, DrawingStyleManager.Role.BreakLine);
+            line2.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line2);
             ctx.Tr.AddNewlyCreatedDBObject(line2, true);
+
         }
 
         // Legacy box-drawing method replaced.

Cad/ShaftRawFreeForgeSquareShaftDrawer.cs

@@ -81,7 +81,7 @@ namespace CadParamPluging.Cad
 
             // 判断是否需要断线
             bool needBreakLines = originalS1 > 150;
-            const double lineSpacing = 3.5;
+            const double lineSpacing = 3.0;
 
             // 1. Draw Main View - 如果需要断线，则绘制带缺口的轮廓
             double xBreak = ox + S1 / 4.0;
@@ -269,7 +269,7 @@ namespace CadParamPluging.Cad
         /// </summary>
         private static void DrawBreakLines(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double width, double height)
         {
-            const double lineSpacing = 3.5;
+            const double lineSpacing = 3.0;
             const double extend = 5.0;
 
             double xBreak = ox + width / 4.0;
@@ -279,13 +279,16 @@ namespace CadParamPluging.Cad
 
             var line1 = new Line(new Point3d(xBreak, y0, 0), new Point3d(xBreak, y1, 0));
             ctx.Style?.Apply(line1, DrawingStyleManager.Role.BreakLine);
+            line1.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line1);
             ctx.Tr.AddNewlyCreatedDBObject(line1, true);
 
             var line2 = new Line(new Point3d(xBreak + lineSpacing, y0, 0), new Point3d(xBreak + lineSpacing, y1, 0));
             ctx.Style?.Apply(line2, DrawingStyleManager.Role.BreakLine);
+            line2.LinetypeScale = 5.0;
             ctx.Btr.AppendEntity(line2);
             ctx.Tr.AddNewlyCreatedDBObject(line2, true);
+
         }
 
         private static void DrawShaftRoundHeadUnifiedOutline(FeatureDrivenDrawer.DrawingContext ctx, double ox, double oy, double W, double H, double w, double r, double xf_left, double xf_right, double fx_L_tangTop, double fy_L_tangTop, double fx_L_tangBotX, double fy_L_tangBot, double fx_R_tangTop, double fy_R_tangTop, double fx_R_tangBotX, double fy_R_tangBot, bool needBreakLines, double xBreak, double breakWidth, double sectionOx, double sectionW)
@@ -691,5 +694,3 @@ namespace CadParamPluging.Cad
         }
     }
 }
-
-

Tests/RingMachinedRollingBreakLineStyleTests.cs

@@ -0,0 +1,121 @@
+using System;
+using System.IO;
+
+public static class RingMachinedRollingBreakLineStyleTests
+{
+    public static int Main()
+    {
+        try
+        {
+            BreakLinesUseReferenceStyle(3.0, "Cad", "RingMachinedRollingDrawer.cs");
+            BreakLinesUseReferenceStyle(3.0, "Cad", "RingRawRollingDrawer.cs");
+            BreakLinesUseReferenceStyle(3.0, "Cad", "ShaftRawFreeForgeRoundShaftDrawer.cs");
+            BreakLinesUseReferenceStyle(3.0, "Cad", "ShaftRawFreeForgeSquareShaftDrawer.cs");
+            RingRollingHasLeftCutExtension("Cad", "RingMachinedRollingDrawer.cs");
+            RingRollingHasLeftCutExtension("Cad", "RingRawRollingDrawer.cs");
+            RingRollingHorizontalLinesBreakAtCut("Cad", "RingMachinedRollingDrawer.cs");
+            RingRollingHorizontalLinesBreakAtCut("Cad", "RingRawRollingDrawer.cs");
+            RingRollingBottomDimensionsStartAtLeftExtension("Cad", "RingMachinedRollingDrawer.cs");
+            RingRollingBottomDimensionsStartAtLeftExtension("Cad", "RingRawRollingDrawer.cs");
+            BreakLineStyleUsesThreeShortDashLinetype();
+            Console.WriteLine("Break-line style tests passed.");
+            return 0;
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine(ex.Message);
+            return 1;
+        }
+    }
+
+    private static void BreakLinesUseReferenceStyle(double expectedSpacing, params string[] pathParts)
+    {
+        var sourcePath = Path.Combine(pathParts);
+        var source = File.ReadAllText(sourcePath);
+
+        var first = source.IndexOf("line1.LinetypeScale = 5.0;", StringComparison.Ordinal);
+        var second = source.IndexOf("line2.LinetypeScale = 5.0;", StringComparison.Ordinal);
+        if (first < 0 || second < 0)
+        {
+            throw new InvalidOperationException(sourcePath + ": both break lines must explicitly use linetype scale 5.0.");
+        }
+
+        if (source.Contains("line3.LinetypeScale = 5.0;"))
+        {
+            throw new InvalidOperationException(sourcePath + ": break must remain two geometric lines; do not add a third line.");
+        }
+
+        var spacingText = "const double lineSpacing = " + expectedSpacing.ToString("0.0", System.Globalization.CultureInfo.InvariantCulture) + ";";
+        if (!source.Contains(spacingText))
+        {
+            throw new InvalidOperationException(sourcePath + ": break-line spacing must be " + expectedSpacing.ToString("0.0", System.Globalization.CultureInfo.InvariantCulture) + ".");
+        }
+    }
+
+    private static void RingRollingHasLeftCutExtension(params string[] pathParts)
+    {
+        var sourcePath = Path.Combine(pathParts);
+        var source = File.ReadAllText(sourcePath);
+
+        if (!source.Contains("const double leftExtension = 10.0;"))
+        {
+            throw new InvalidOperationException(sourcePath + ": left cut horizontal lines must extend left by 10.");
+        }
+
+        if (!source.Contains("DrawingStyleManager.Role.Centerline") || !source.Contains("centerLine.LinetypeScale = 8.0;"))
+        {
+            throw new InvalidOperationException(sourcePath + ": left cut must add a centerline with linetype scale 8.0.");
+        }
+    }
+
+    private static void RingRollingHorizontalLinesBreakAtCut(params string[] pathParts)
+    {
+        var sourcePath = Path.Combine(pathParts);
+        var source = File.ReadAllText(sourcePath);
+
+        if (!source.Contains("DrawOutlineLine(ctx, xLeft, oy, xBreakLeft, oy);") ||
+            !source.Contains("DrawOutlineLine(ctx, ox, oy, xRight, oy);") ||
+            !source.Contains("DrawOutlineLine(ctx, xRight, yTop, ox, yTop);") ||
+            !source.Contains("DrawOutlineLine(ctx, xBreakLeft, yTop, xLeft, yTop);"))
+        {
+            throw new InvalidOperationException(sourcePath + ": ordinary outline must leave a gap between the two break lines.");
+        }
+
+        if (!source.Contains("DrawOutlineLine(ctx, xLeft, yBottom, xAxis - lineSpacing, yBottom);") ||
+            !source.Contains("DrawOutlineLine(ctx, xAxis, yBottom, xTarget, yBottom);") ||
+            !source.Contains("DrawOutlineLine(ctx, xLeft, yTop, xAxis - lineSpacing, yTop);") ||
+            !source.Contains("DrawOutlineLine(ctx, xAxis, yTop, xTarget, yTop);"))
+        {
+            throw new InvalidOperationException(sourcePath + ": fillet horizontal lines must leave a gap between the two break lines.");
+        }
+    }
+
+    private static void BreakLineStyleUsesThreeShortDashLinetype()
+    {
+        var sourcePath = Path.Combine("Cad", "DrawingStyleManager.cs");
+        var source = File.ReadAllText(sourcePath);
+
+        if (!source.Contains("BreakLineLinetypeName = \"BREAK_THREE_SHORT_V2\"") ||
+            !source.Contains("DefaultLinetypeName = BreakLineLinetypeName") ||
+            !source.Contains("ent.Linetype = BreakLineLinetypeName") ||
+            !source.Contains("NumDashes = 8") ||
+            !source.Contains("record.SetDashLengthAt(7, -0.18);"))
+        {
+            throw new InvalidOperationException(sourcePath + ": BreakLine must use the custom long plus three short dashes linetype.");
+        }
+    }
+
+    private static void RingRollingBottomDimensionsStartAtLeftExtension(params string[] pathParts)
+    {
+        var sourcePath = Path.Combine(pathParts);
+        var source = File.ReadAllText(sourcePath);
+
+        if (!source.Contains("new Point3d(xLeft, oy, 0)") ||
+            !source.Contains("new Point3d((xLeft + ox + radius) / 2.0, oy - 25, 0)") ||
+            !source.Contains("new Point3d(xLeft, yBottom, 0)") ||
+            !source.Contains("new Point3d((xLeft + xInnerRight) / 2.0, dimLineY, 0)"))
+        {
+            throw new InvalidOperationException(sourcePath + ": bottom dimensions must start from the left extension.");
+        }
+    }
+}