OpenGL Motif toolkit examples

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This directory contains sample openGL source code based on the MOTIF toolkit, or at least, including the Motif library (see Makefile).

VERSION 5.0 NEW ADDITIONS:

• drawWidget.c: example of combining the opengl drawing widget with a motif main window. The example also shows how to set the windows to perform dynamic switching between a double buffered and a single buffered opengl window.

pre vintage 5.0 updated, mosaicized, etc.

• oblur.c: this program shows how to use accumulation buffer to do motion blur
  LEFTMOUSE for animation
  MIDDLEMOUSE to turn motion blur OFF (default)
  RIGHTMOUSE to turn motion blur ON

• obuffer.c: this program shows how to toggle between single and double buffer mode on the fly.
  LEFT/MIDDLE -MOUSE switch buffers
  RIGHTMOUSE for animation.

• oclip.c: this program shows the usage of arbitrary clipping plane.
  LEFTMOUSE to animate the object
  RIGHTMOUSE to move the clipping plane.

• oedgeflag.c: this program shows how to use edgeflag to control visibility of edges
  LEFTMOUSE for animation
  MIDDLEMOUSE to turn Edge Flag OFF
  RIGHTMOUSE to turn Edge Flag ON

• ohidden.c: this program shows how to draw outlined polygon using stencil planes.
  LEFTMOUSE for animation
  MIDDLEMOUSE to turn OFF stenciling
  RIGHTMOUSE to turn ON stenciling

• olight.c: a program which shows how to do hardware lighting (including two sided light).
  LEFTMOUSE to animate the object,
  MIDDLEMOUSE to turn on two sided light
  RIGHTMOUSE to turn on single sided light.

• ostencil.c: a program which shows how to use stencil planes.
  LEFTMOUSE for animation
  MIDDLEMOUSE to turn stenciling OFF
  RIGHTMOUSE to turn stenciling ON

• otessellate.c: this program shows how to tessellate concave polygons and polygons with holes using glu routines
  LEFTMOUSE for animation
  MIDDLEMOUSE to turn Tessellation OFF
  RIGHTMOUSE to turn Tessellation ON

• otext.c: a program which shows how to create and draw bitmapped text. it achieves charstr() functionality of irisGL.

• textfun.c: takes bitmap fonts from the X server into an OpenGL client and convert them into OpenGL display lists with transformative geometry. Text can then be displayed from any perspective in 3D.

  The program renders OpenGL into a standard Motif drawing area and does not use any special OpenGL widget. Pull-down menus with toggles and radio buttons are used. The animation is controled by X Toolkit work procs; iconfiying textfun will stop the work proc and resume it when the program is uniconified.

  Various fonts can be switched between. A number of the fonts are X-scalable fonts demonstrating how the blocky nature of the text can be minimized with higher resolution fonts.

  textfun demonstrates:

  • Code to suck down X bitmap fonts so they can then be converted into geometry (ie, not glBitmap) display list fonts.
  • A pulldown menu with a radio button box.
  • the poor-man's OpenGL font manager!

• textfun5.1: uses the Makefile's textfun5.1 compile rule employing the IRIX_5_1_MOTIF_BUG_WORKAROUND flag for a Motif bug in IRIX 5.1

• xmblur.c: do motion blur in OpenGL with the libGLw widget.