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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /offapi/com/sun/star/geometry/AffineMatrix3D.idl | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | offapi/com/sun/star/geometry/AffineMatrix3D.idl | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/offapi/com/sun/star/geometry/AffineMatrix3D.idl b/offapi/com/sun/star/geometry/AffineMatrix3D.idl new file mode 100644 index 000000000..4602907c3 --- /dev/null +++ b/offapi/com/sun/star/geometry/AffineMatrix3D.idl @@ -0,0 +1,107 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef __com_sun_star_geometry_AffineMatrix3D_idl__ +#define __com_sun_star_geometry_AffineMatrix3D_idl__ + +module com { module sun { module star { module geometry { + +/** This structure defines a 3 by 4 affine matrix.<p> + + The matrix defined by this structure constitutes an affine mapping + of a point in 3D to another point in 3D. The last line of a + complete 4 by 4 matrix is omitted, since it is implicitly assumed + to be [0,0,0,1].<p> + + An affine mapping, as performed by this matrix, can be written out + as follows, where <code>xs, ys</code> and <code>zs</code> are the source, and + <code>xd, yd</code> and <code>zd</code> the corresponding result coordinates: + + <code> + xd = m00*xs + m01*ys + m02*zs + m03; + yd = m10*xs + m11*ys + m12*zs + m13; + zd = m20*xs + m21*ys + m22*zs + m23; + </code><p> + + Thus, in common matrix language, with M being the + AffineMatrix3D and vs=[xs,ys,zs]^T, vd=[xd,yd,zd]^T two 3D + vectors, the affine transformation is written as + vd=M*vs. Concatenation of transformations amounts to + multiplication of matrices, i.e. a translation, given by T, + followed by a rotation, given by R, is expressed as vd=R*(T*vs) in + the above notation. Since matrix multiplication is associative, + this can be shortened to vd=(R*T)*vs=M'*vs. Therefore, a set of + consecutive transformations can be accumulated into a single + AffineMatrix3D, by multiplying the current transformation with the + additional transformation from the left.<p> + + Due to this transformational approach, all geometry data types are + points in abstract integer or real coordinate spaces, without any + physical dimensions attached to them. This physical measurement + units are typically only added when using these data types to + render something onto a physical output device. For 3D coordinates + there is also a projection from 3D to 2D device coordinates needed. + Only then the total transformation matrix (including projection to 2D) + and the device resolution determine the actual measurement unit in 3D.<p> + + @since OOo 2.0 + */ +struct AffineMatrix3D +{ + /// The top, left matrix entry. + double m00; + + /// The top, left middle matrix entry. + double m01; + + /// The top, right middle matrix entry. + double m02; + + /// The top, right matrix entry. + double m03; + + /// The middle, left matrix entry. + double m10; + + /// The middle, middle left matrix entry. + double m11; + + /// The middle, middle right matrix entry. + double m12; + + /// The middle, right matrix entry. + double m13; + + /// The bottom, left matrix entry. + double m20; + + /// The bottom, middle left matrix entry. + double m21; + + /// The bottom, middle right matrix entry. + double m22; + + /// The bottom, right matrix entry. + double m23; +}; + +}; }; }; }; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |