mirror of
https://github.com/Gnucash/gnucash.git
synced 2025-02-25 18:55:30 -06:00
94e9fe5e6f
git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@12096 57a11ea4-9604-0410-9ed3-97b8803252fd
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
|
|
/*
|
|
* go-geometry.h : A collection of geometry related functions.
|
|
*
|
|
* Copyright (C) 2005 Emmanuel Pacaud (emmanuel.pacaud@univ-poitiers.fr)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
|
|
* USA
|
|
*/
|
|
|
|
#ifndef GO_GEOMETRY_H
|
|
#define GO_GEOMETRY_H
|
|
|
|
#include <goffice/graph/goffice-graph.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GO_GEOMETRY_ANGLE_TOLERANCE 1E-3
|
|
|
|
typedef enum {
|
|
GO_SIDE_LEFT,
|
|
GO_SIDE_RIGHT
|
|
} GOGeometrySide;
|
|
|
|
typedef enum {
|
|
GO_ROTATE_NONE = 0,
|
|
GO_ROTATE_COUNTERCLOCKWISE = 1,
|
|
GO_ROTATE_UPSIDEDOWN = 2,
|
|
GO_ROTATE_CLOCKWISE = 3,
|
|
GO_ROTATE_FREE = 4
|
|
} GOGeometryRotationType;
|
|
|
|
typedef struct {
|
|
double x,y; /* Center */
|
|
double w,h; /* Edges */
|
|
double alpha; /* Angle from x axis to w edge, in radians */
|
|
} GOGeometryOBR;
|
|
|
|
#define GOGeometryAABR GogViewAllocation /* x, y: top left corner */
|
|
|
|
void go_geometry_cartesian_to_polar (double x, double y, double *rho, double *theta);
|
|
double go_geometry_point_to_segment (double xp, double yp, double xs, double ys, double w, double h);
|
|
|
|
void go_geometry_AABR_add (GOGeometryAABR *aabr0, GOGeometryAABR const *aabr1);
|
|
void go_geometry_OBR_to_AABR (GOGeometryOBR const *obr, GOGeometryAABR *aabr);
|
|
gboolean go_geometry_test_OBR_overlap (GOGeometryOBR const *obr0, GOGeometryOBR const *obr1);
|
|
|
|
GOGeometryRotationType
|
|
go_geometry_get_rotation_type (double angle);
|
|
|
|
void go_geometry_calc_label_position (GOGeometryOBR *obr, double alpha, double offset, GOGeometrySide side);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* GO_GEOMETRY_H */
|