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61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/******************************************************************************
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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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/**----------------------------------------------------------------------------
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Include Files and Type Defines
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----------------------------------------------------------------------------**/
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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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/**----------------------------------------------------------------------------
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Public Function Prototypes
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----------------------------------------------------------------------------**/
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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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