gluProject

The gluProject function maps object coordinates to window coordinates.

int gluProject(
  GLdouble objx,  GLdouble objy,  GLdouble objz,  const GLdouble modelMatrix[16],  const GLdouble projMatrix[16],  const GLint viewport[4],  GLdouble *winx,  GLdouble *winy,  GLdouble *winz);

• objx, objy, objz
  The object coordinates.
• modelMatrix
  The current modelview matrix (as from a glGetDoublev call).
• projMatrix
  The current projection matrix (as from a glGetDoublev call).
• viewport
  The current viewport (as from a glGetIntegerv call).
• winx, winy, winz
  The computed window coordinates.

The gluProject function transforms the specified object coordinates into window coordinates using modelMatrix, projMatrix, and viewport. The result is stored in winx, winy, and winz. A return value of GL_TRUE indicates success, and GL_FALSE indicates failure.

**  Windows NT/2000:** Requires Windows NT 3.5 or later.
**  Windows 95/98:** Requires Windows 95 or later. Available as a redistributable for Windows 95.
**  Header:** Declared in Glu.h.
**  Library:** Use Glu32.lib.

glGetDoublev, glGetIntegerv, gluUnProject