44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_OPENGL2_VIEW_AXIS_H
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#define IGL_OPENGL2_VIEW_AXIS_H
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#include "../igl_inline.h"
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#include <Eigen/Core>
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namespace igl
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{
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namespace opengl2
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{
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// Determines the view axis or depth axis of the current gl matrix
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// Inputs:
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// mv pointer to modelview matrix
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// Outputs:
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// x pointer to x-coordinate in scene coordinates of the un-normalized
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// viewing axis
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// y pointer to y-coordinate in scene coordinates of the un-normalized
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// viewing axis
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// z pointer to z-coordinate in scene coordinates of the un-normalized
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// viewing axis
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//
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// Note: View axis is returned *UN-normalized*
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IGL_INLINE void view_axis(const double * mv, double * x, double * y, double * z);
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// Extract mv from current GL state.
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IGL_INLINE void view_axis(double * x, double * y, double * z);
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template <typename DerivedV>
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IGL_INLINE void view_axis(Eigen::PlainObjectBase<DerivedV> & V);
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}
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};
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#ifndef IGL_STATIC_LIBRARY
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# include "view_axis.cpp"
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#endif
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#endif
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