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xform2d.h
Go to the documentation of this file.
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/******************************************************************************
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** Filename: xform2d.h
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** Purpose: Definitions for using 2D point transformation library
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** Author: Dan Johnson
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** History: Fri Sep 22 09:57:08 1989, DSJ, Created.
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**
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** (c) Copyright Hewlett-Packard Company, 1988.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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******************************************************************************/
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#ifndef XFORM2D_H
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#define XFORM2D_H
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#include "
fpoint.h
"
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typedef
struct
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{
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FLOAT32
a, b, c, d, tx,
ty
;
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}
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MATRIX_2D
, *
MATRIX_2D_PTR
;
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void
InitMatrix
(
MATRIX_2D
*M);
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void
CopyMatrix
(
MATRIX_2D
*A,
MATRIX_2D
*B);
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/* matrix scaling, translation, rotation, mirroring, etc.*/
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void
TranslateMatrix
(
MATRIX_2D
*M,
FLOAT32
X,
FLOAT32
Y);
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void
ScaleMatrix
(
MATRIX_2D
*M,
FLOAT32
X,
FLOAT32
Y);
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void
MirrorMatrixInX
(
MATRIX_2D
*M);
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void
MirrorMatrixInY
(
MATRIX_2D
*M);
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void
MirrorMatrixInXY
(
MATRIX_2D
*M);
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/* using a matrix to map points*/
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FLOAT32
MapX
(
MATRIX_2D
*M,
FLOAT32
X,
FLOAT32
Y);
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FLOAT32
MapY
(
MATRIX_2D
*M,
FLOAT32
X,
FLOAT32
Y);
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void
MapPoint
(
MATRIX_2D
*M,
const
FPOINT
&A,
FPOINT
* B);
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FLOAT32
MapDx
(
MATRIX_2D
*M,
FLOAT32
DX,
FLOAT32
DY);
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FLOAT32
MapDy
(
MATRIX_2D
M,
FLOAT32
DX,
FLOAT32
DY);
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void
RotateMatrix
(MATRIX_2D_PTR Matrix,
FLOAT32
Angle);
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#endif
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xform2d.h
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