Oxygen Basic

Programming => Example Code => Graphics => Topic started by: Charles Pegge on May 17, 2013, 04:54:08 PM

Title: Shapes and soft shadows
Post by: Charles Pegge on May 17, 2013, 04:54:08 PM

A suggestion of shadow, Simple to implement.

The shadows operate on the same principle as smoke and cloud, only using shades of transparent black.


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Title: Re: Shapes and soft shadows
Post by: Frankolinox on May 21, 2013, 02:58:19 AM

the "material.inc" file is missing there and "hemisphere" function should rename as "hemisphiric()" function, I cannot run this example. the example looks however good ;)

best regards, frank

Title: Re: Shapes and soft shadows
Post by: Charles Pegge on May 21, 2013, 03:36:35 AM

Hi Frank,

Here is the complete examples/opengl folder. Everything should be in sync now, I hope.

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Title: Re: Shapes and soft shadows
Post by: Charles Pegge on May 21, 2013, 02:25:28 PM

Adding simple Ball bouncing physics, with MIDI percussion

  'BOUNCING BALL
  glPushMatrix
  static single va=10000,yp=4.00,yv=.00, ya=.004
  yv-=ya 'acceleration
  yp+=yv
  if yp<0
    yv=-yv*.9 'bounce with energy loss
    if yv<ya
      yv=0 'limit rebound
    else
      va*=.9
      ding sqr(va),35 'vol 10..127 : percussion 35..81
    end if
    yp=0
  end if
  glTranslatef 2.5,-1.5+yp,-6.0
  glScalef      .5,.5,.5
  glCallList sphere
  glPopMatrix


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Title: Re: Shapes and soft shadows
Post by: Frankolinox on May 22, 2013, 12:48:12 AM

thanks charles, the new tiles example is finally working here :-)

I changed some materials for a test too. see added picture. more questions about materials and colors will come next time.

frank

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Title: Re: physics + Shapes and soft shadows
Post by: Frankolinox on May 22, 2013, 11:27:08 AM

here's a simple test for bouncing cubes and sphere with little ears :-) all three cubes have different velocities, masses and rotation modi. the cloud animatino I have started earlier and took/add a second rendering cloud.

demo exe + oxygen.dll you find in zip folder.

charles, for me that could be a really interesting (simple) starting point for a "physical engine", isn't it? ;)

best regards, frank

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