Hello @HerrMay,

Thank you for reaching out to us. The scope of your question is a bit broad, I would invite you to have a look at our multiple Draw function examples on GitHub.

I am also not sure if you indeed want to draw circles, or if points classify for you as circles. When you want to draw indeed circles, you must decide if you want to draw them in screen space, i.e., use BaseDraw.DrawCircle2D to draw circles that always face the screen; or use BaseDraw.DrawCircle to draw circles that rotate with the spline in world space. For the latter you would then have to decide how to construct/define the orientation of each circle.

Find a simple example for drawing points below.

Cheers,
Ferdinand

Result:

b2db4e9f-b1fb-4486-abfe-b40bbe87efa9-image.png

Code:

def Draw(self, op, drawpass, bd, bh) -> int: """Called by Cinema 4D to let a plugin draw into the given view port. """ # Only draw into the object draw pass and ignore for example the highlight pass. The object # draw pass is the only draw pass to draw into for most drawing operations. if drawpass != c4d.DRAWPASS_OBJECT: return c4d.DRAWRESULT_OK # We could also add more checks, as for example only drawing into view ports that have the # "Perspective" projection. if bd[c4d.BASEDRAW_DATA_PROJECTION] != c4d.BASEDRAW_PROJECTION_PERSPECTIVE: return c4d.DRAWRESULT_OK # Get the cache of the object representing the plugin in the object manager, i.e., more or # less what we returned in GetContour, Cinema 4D has however exhausted the cache for us, and # the cache is not a SplineObject but a LineObject (i.e, the cache of a SplineObject). cache: c4d.BaseObject = op.GetDeformCache() or op.GetCache() if not isinstance(cache, c4d.LineObject): return c4d.DRAWRESULT_OK # Set the drawing space to the spline object, so that we can draw points of that object # without any further transformations. We also draw over almost everything else with a # z-offset of five. bd.SetMatrix_Matrix(op, op.GetMg(), zoffset=5) # Get the points of the line object and construct a gradient of colors for the points # determined by index. BaseDraw.DrawPoints is a bit weird as it takes a list[float] for # the colors of the points and not a list[c4d.Vector]. count: int = cache.GetPointCount() points: list[c4d.Vector] = cache.GetAllPoints() colors: list[float] = [] for i in range(count): f: float = i/count colors += [f, f * .5, 0] # Set the point size to draw with and draw the points. bd.SetPointSize(10) bd.DrawPoints(points, colors, 3) return c4d.DRAWRESULT_OK

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