Still open for advices and suggestion for 3d loops and creating custom hatch from a given HatchPattern object.I haven't find a way for the Editor.TraceBoundary() to work with 3d loops yet. Note that this method only works on 2d loops ( regions, closed polylines, lines, curves. Causes: The PAT files have syntax or formatting issues. Click File > Options > Application Options > Drafting > Hatching to display. After filling the area, hit Enter to apply the hatch. Choose your desired method: Pick Points or Select Boundary Objects. , I can implement my logic to draw the lines of the grid. Custom hatch patterns are not available in AutoCAD Autodesk Support Products and versions covered Issue: After adding custom hatch patterns (PAT files) to AutoCAD, they do not show up as usable hatches within the program. Further specify the pattern on the Pattern panel.

Then, create the region that needed to be hatched and access its RegionAreaProperty.Extends to get the bottom-left and top-right point of the rectangle that contains my newly created region. Using the Editor.TraceBoudary() method, I can retrieve the loops I needed with the outer most loop will be the last entry in the return DBObjectCollection (a Polyline object to be precise).

About the custom grid lines drawing and querying: I got some ideas from these:.

Thus, I receive the result from the default values.

About customize the predefined hatch pattern: It is possible to do that, however the properties of the hatch must be defined in a certain order to have actual effect, or else it will be ignored and use the default value instead.įor example: in my case, I defined the value of HatchStyle before PatternScale and PatternSpace while it should be the other way around.

Customize hatch pattern autocad