pfMakePerspFrust error?

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ROY RUDDLE (saprar++at++thor.cf.ac.uk)
Fri, 5 May 1995 14:55:03 +0100 (BST)

Ref. p153 in the 1.2 Performer Reference manual. I've tried doing this
with just one frustrum, but the FOV I get is 45 (horiz) by 43.xxx (vert).

Any suggestions anyone? Code is (C++):

pfChannel *left = pfNewChan(pfGetPipe(0));
float v_fov = 22.5f;
float t = pfTan( v_fov );
pfMakePerspFrust(left, -1.0f, 0.0f, -t, t);
pfFrustNearFar(left, 1.0f, 1000.0f);
float ffh, ffv;
pfGetFrustFOV( left, &ffh, &ffv );
cout << "frust FOV " << ffh << " " << ffv << endl;

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Roy Ruddle, Principal Researcher | School of Psychology
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