Willian Padovani Germano
eaf1cdd383
- Implemented partially Blender.Sys - Worked on issues related to sys, path - Took away most "debug" printfs
66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
# Blender.BGL module (OpenGL wrapper)
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"""
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The Blender.BGL submodule (the OpenGL wrapper).
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The Blender.BGL submodule
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=========================
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This module wraps OpenGL constants and functions, making them available from
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within Blender Python.
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The complete list can be retrieved from the module itself, by listing its
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contents: dir(Blender.BGL). There are too many to be documented here, but
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a simple search on the net can point to more than enough material to teach
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OpenGL programming, from books to many collections of tutorials.
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The "red book": "I{OpenGL Programming Guide: The Official Guide to Learning
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OpenGL}" and the online NeHe tutorials are two of the best resources.
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@see: U{www.opengl.org}
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Example::
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import Blender
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from Blender.BGL import *
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from Blender import Draw
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R = G = B = 0
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A = 1
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instructions = "Hold mouse buttons to change the background color."
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quitting = " Press ESC or q to quit."
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#
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def show_win():
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glClearColor(R,G,B,A) # define color used to clear buffers
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glClear(GL_COLOR_BUFFER_BIT) # use it to clear the color buffer
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glColor3f(1,1,1) # change default color
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glRasterPos2i(50,100) # move cursor to x = 50, y = 100
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Draw.Text("Testing BGL + Draw") # draw this text there
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glRasterPos2i(350,20) # move cursor again
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Draw.Text(instructions + quitting) # draw another msg
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glBegin(GL_LINE_LOOP) # begin a vertex-data list
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glVertex2i(46,92)
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glVertex2i(120,92)
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glVertex2i(120,115)
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glVertex2i(46,115)
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glEnd() # close this list
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glColor3f(0.35,0.18,0.92) # change default color again
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glBegin(GL_POLYGON) # another list, for a polygon
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glVertex2i(315, 292)
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glVertex2i(412, 200)
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glVertex2i(264, 256)
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glEnd()
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Draw.Redraw(1) # make changes visible.
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#
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def ev(evt, val): # this is a callback for Draw.Register()
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global R,G,B,A # ... it handles input events
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if evt == Draw.ESCKEY or evt == Draw.QKEY:
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Draw.Exit() # this quits the script
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elif evt == Draw.LEFTMOUSE: R = 1 - R
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elif evt == Draw.MIDDLEMOUSE: G = 1 - G
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elif evt == Draw.RIGHTMOUSE: B = 1 - B
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else:
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Draw.Register(show_win, ev, None)
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#
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Draw.Register(show_win, ev, None) # start the main loop
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"""
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