[GEM-dev] [ pd-gem-Feature Requests-3468897 ] having more drawing style for primitive in Base/GemShape.cpp

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Feature Requests item #3468897, was opened at 2012-01-03 02:54
Message generated for change (Tracker Item Submitted) made by nusmuk
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Category: None
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: Cyrille Henry (nusmuk)
Assigned to: Nobody/Anonymous (nobody)
Summary: having more drawing style for primitive in Base/GemShape.cpp

Initial Comment:
Thanks to the new vertexbuffer object, on can create a wild range of geometry. 
but the current rendering style are limited to : 
GL_LINE_LOOP, GL_POLYGON, GL_QUADS, GL_POINTS, GL_TRIANGLES, GL_TRIANGLE_STRIP;
This is a bit limiting. By example, the audio oscilloscope in the vertexbuffer help file would benefit being rendered as GL_LINE_STRIP better than GL_LINE_LOOP.
in fact, the missing rendering style are : 
GL_LINE, GL_LINE_STRIP,  GL_TRIANGLES_STRIP, GL_TRIANGLES_FAN and GL_QUADS_STRIP.

The implementation problem comes from the fact that only the 1st letter of the draw message was tested in order to discriminate from Line / points / triangle etc.
So adding more message may break backward compatibility.
Should we consider that "draw Lollipop" is not a legal message and should return an error, better than drawing Line_Loop?


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=507082&aid=3468897&group_id=64325