178 lines
5.1 KiB
Text
178 lines
5.1 KiB
Text
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file matrixLens.I
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* @author drose
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* @date 2001-12-12
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*/
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/**
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*
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*/
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INLINE MatrixLens::
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MatrixLens() :
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_user_mat(LMatrix4::ident_mat()),
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_ml_flags(0)
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{
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// The default film size for a MatrixLens is 2, which makes the default
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// range for both X and Y be [-1, 1]. This also, incidentally, makes the
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// film_mat be identity.
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set_film_size(2.0);
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}
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/**
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*
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*/
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INLINE MatrixLens::
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MatrixLens(const MatrixLens ©) :
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Lens(copy),
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_user_mat(copy._user_mat),
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_left_eye_mat(copy._left_eye_mat),
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_right_eye_mat(copy._right_eye_mat),
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_ml_flags(copy._ml_flags)
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{
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}
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/**
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*
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*/
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INLINE void MatrixLens::
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operator = (const MatrixLens ©) {
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Lens::operator = (copy);
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_user_mat = copy._user_mat;
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_left_eye_mat = copy._left_eye_mat;
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_right_eye_mat = copy._right_eye_mat;
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_ml_flags = copy._ml_flags;
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}
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/**
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* Explicitly specifies the projection matrix. This matrix should convert X
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* and Y to the range [-film_size/2, film_size/2], where (-fs/2,-fs/2) is the
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* lower left corner of the screen and (fs/2, fs/2) is the upper right. Z
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* should go to the range [-1, 1], where -1 is the far plane and 1 is the near
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* plane. Note that this is a left-handed Y-up coordinate system.
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*
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* The default film_size for a MatrixLens is 2, so the default range is [-1,
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* 1] for both X and Y. This is consistent with the GL conventions for
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* projection matrices.
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*/
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INLINE void MatrixLens::
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set_user_mat(const LMatrix4 &user_mat) {
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Lens::CDWriter lens_cdata(Lens::_cycler, true);
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_user_mat = user_mat;
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do_adjust_comp_flags(lens_cdata, CF_mat, 0);
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}
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/**
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* Returns the explicit projection matrix as set by the user. This does not
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* include transforms on the lens or film (e.g. a film offset or view hpr).
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*/
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INLINE const LMatrix4 &MatrixLens::
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get_user_mat() const {
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return _user_mat;
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}
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/**
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* Sets a custom projection matrix for the left eye. This is only used if the
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* lens is attached to a stereo camera, in which case the left eye matrix will
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* be used to draw the scene in the left eye (but the center matrix--the
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* user_mat--will still be used to cull the scene).
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*
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* This matrix should not be too different from the center matrix (set by
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* set_user_mat()) or culling errors may become obvious.
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*/
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INLINE void MatrixLens::
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set_left_eye_mat(const LMatrix4 &left_eye_mat) {
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Lens::CDWriter lens_cdata(Lens::_cycler, true);
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_left_eye_mat = left_eye_mat;
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_ml_flags |= MF_has_left_eye;
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do_adjust_comp_flags(lens_cdata, CF_mat, 0);
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}
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/**
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* Removes the custom projection matrix set for the left eye, and uses the
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* center matrix (set by set_user_mat) instead.
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*/
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INLINE void MatrixLens::
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clear_left_eye_mat() {
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Lens::CDWriter lens_cdata(Lens::_cycler, true);
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_ml_flags &= ~MF_has_left_eye;
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do_adjust_comp_flags(lens_cdata, CF_mat, 0);
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}
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/**
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* Returns true if the camera has a custom projection matrix set for the left
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* eye, or false if the center matrix (set by set_user_mat) will be used for
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* the left eye.
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*/
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INLINE bool MatrixLens::
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has_left_eye_mat() const {
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return (_ml_flags & MF_has_left_eye) != 0;
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}
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/**
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* Returns the custom projection matrix for the left eye, if any, or the
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* center matrix if there is no custom matrix set for the left eye.
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*/
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INLINE const LMatrix4 &MatrixLens::
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get_left_eye_mat() const {
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if ((_ml_flags & MF_has_left_eye) != 0) {
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return _left_eye_mat;
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}
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return _user_mat;
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}
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/**
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* Sets a custom projection matrix for the right eye. This is only used if
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* the lens is attached to a stereo camera, in which case the right eye matrix
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* will be used to draw the scene in the right eye (but the center matrix--the
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* user_mat--will still be used to cull the scene).
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*
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* This matrix should not be too different from the center matrix (set by
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* set_user_mat()) or culling errors may become obvious.
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*/
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INLINE void MatrixLens::
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set_right_eye_mat(const LMatrix4 &right_eye_mat) {
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Lens::CDWriter lens_cdata(Lens::_cycler, true);
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_right_eye_mat = right_eye_mat;
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_ml_flags |= MF_has_right_eye;
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do_adjust_comp_flags(lens_cdata, CF_mat, 0);
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}
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/**
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* Removes the custom projection matrix set for the right eye, and uses the
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* center matrix (set by set_user_mat) instead.
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*/
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INLINE void MatrixLens::
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clear_right_eye_mat() {
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Lens::CDWriter lens_cdata(Lens::_cycler, true);
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_ml_flags &= ~MF_has_right_eye;
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do_adjust_comp_flags(lens_cdata, CF_mat, 0);
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}
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/**
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* Returns true if the camera has a custom projection matrix set for the right
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* eye, or false if the center matrix (set by set_user_mat) will be used for
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* the right eye.
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*/
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INLINE bool MatrixLens::
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has_right_eye_mat() const {
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return (_ml_flags & MF_has_right_eye) != 0;
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}
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/**
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* Returns the custom projection matrix for the right eye, if any, or the
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* center matrix if there is no custom matrix set for the right eye.
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*/
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INLINE const LMatrix4 &MatrixLens::
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get_right_eye_mat() const {
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if ((_ml_flags & MF_has_right_eye) != 0) {
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return _right_eye_mat;
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}
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return _user_mat;
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}
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