In my attempt to learn opengl I have edited the file shader.ijs . I will show the following diff at the bottom of this email.
diff /Users/brian/j901/addons/demos/qtdemo/shader.ijs /Users/brian/j64-807-user/shaderb.ijs I have been assuming that the movement in the shader example is based on moving the eye instead of moving the cube that is being observed. So the first issue is whether my assumption is correct. The array vectors in the code are stored in the variable named mvp. My code attempts to translate the mvp by a few steps using gl_Translate when the function key number 10 (F10) is pressed. But with my current code nothing seems to happen when I press F10. Thanks in advance, server:~ brian$ diff /Users/brian/j901/addons/demos/qtdemo/shader.ijs /Users/brian/j64-807-user/shaderb.ijs 7c7 < STOP=: 1 --- > STOP=: 0 16c16 < if. -. checkrequire_qtdemo_ 'gles';'api/gles' do. return. end. --- > NB. if. -. checkrequire_qtdemo_ 'gles';'api/gles' do. return. end. 92c92 < gl_paint'' --- > gl_paint 0 116a117,118 > if. y-:1 do. mvp=: gl_Translate 20 3 0 > else. 120a123 > end. 163c166,167 < STOP=: -.STOP --- > NB. STOP=: -.STOP > gl_paint 1 server:~ brian$ -- (B=) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
