HImUtility
Functions
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Detailed Description
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class HImUtility
HImUtility contains a number of widely used IM callbacks. Callbacks are attributes of a segment and can be set in one of two ways. The first is by calling the 3dGS function #HC_Set_Callback(“callback_point = callbback_name”) or the by using the MVO method HImSetCallback(“callback_point”, “callback_name”). If you are using MVO then it is recommended that you use the HImSetCallback approach. The callback name and callback point are both documented for each callback below.
Public Static Functions
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static void RegisterCallbacks()
This method registers all the callbacks in this class with 3dGS and the MVO IM Manager
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static void set_clip_rectangle(HIC_Rendition const *nr, HIC_Segment_Info const *si)
This callback sets a rectilinear clip region on the segment. When you set this callback, you must set the user options of “left=i, right=j, top=k, bottom=l” on the segment that you want the clip performed. I, j, k and l are floating point numbers which define the world space borders of the clip region. The callback is called “HImUtility_set_clip_rectangle” and the callback point is “draw segment tree”.
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static void suppress_3d_geometry(HIC_Rendition const *rendition, HIC_Geometry const *geo3)
This callback does not draw anything and consequently causes no geometry to be drawn for the segment it is set on. The callback is called “HImUtility_suppress_3d_geometry” and the callback point is “draw 3d geometry”.
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static void draw_gradiated_window_background(HIC_Rendition const *rendition, HIC_Int_Rectangle const *extent)
This callback draws the window background in a gradiated fashion. It is no longer needed as this window coloring scheme is supported in 3dGS but is included for backward compatibility reasons. The callback is called “HImUtility_draw_gradiated_window_background” and the callback point is “draw window”.
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static void draw_annotation_lines(HIC_Rendition const *nr, HIC_Polyline const *poly)
This callback only draws the lines in a segment if the visibility of text is on. Developers use it to easily turn off the visibility of leaders of annotation data. The callback is called “HImUtility_draw_annotation_lines” and the callback point is “draw 3d polyline”.
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static void draw_segment_in_background(HIC_Rendition const *nr, HIC_DC_Point const points[], HIC_RGBA const colors[], HIC_Plane const planes[], HIC_Parameter const params[], HIC_Integer32 param_width, HIC_Parameter_Flags param_flags)
This callback draws all the faces of the shells in the segment in the back 10% of the scene forcing them to appear behind everything else in the scene. The callback is called “HImUtility_draw_segment_in_background” and the callback point is “draw dc reshaded triangle”.
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static void draw_dc_polyline_infront(HIC_Rendition const *rendition, int count, HIC_DC_Point const geo3[])
This callback draws the lines in the front 1% of the scene forcing the lines to appear on top of everything else in the scene. The callback is called “HImUtility_draw_dc_polyline_infront” and the callback point is “draw dc polyline”.
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static void draw_device_independent_line_weights(HIC_Rendition const *rendition, int count, HIC_DC_Point const geo3[])
This callback draws the lines and edges with device independent weights. This is particularily useful in cases where you are using line/edge weights greater than 1 and want WYSIWYG printing. The callback is called “HImUtility_device_independent_polyline_weight” and the callback point is “draw dc polyline”.
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static void drawTextInfront(HIC_Rendition const *rendition, HIC_Text_Info const *text_info)
This callback draws the text in the front 1% of the scene forcing the text to appear on top of everything else in the scene. The callback is called “HImUtility_draw_text_infront” and the callback point is “draw text”.
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static void visible_hlr_polyline(HIC_Rendition const *rendition, int count, HIC_DC_Point const geo3[])
This callback was written to show users how to collect the output from a hidden line rendering of a scene.
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static void RegisterCallbacks()
