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/*
ChibiOS/GFX - Copyright (C) 2012
Joel Bodenmann aka Tectu <joel@unormal.org>
This file is part of ChibiOS/GFX.
ChibiOS/GFX is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/GFX 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, see <http://www.gnu.org/licenses/>.
*/
/**
* @file include/gwin/graph.h
* @brief GWIN GRAPH module header file.
*
* @defgroup Graph Graph
* @ingroup GWIN
*
* @details GWIN allows it to easily draw graphs.
* @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h
* @pre GWIN_NEED_GRAPH must be set to TRUE in your gfxconf.h
*
* @{
*/
#ifndef _GWIN_GRAPH_H
#define _GWIN_GRAPH_H
#if GWIN_NEED_GRAPH || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
#define GW_GRAPH 0x0003
/*===========================================================================*/
/* Type definitions */
/*===========================================================================*/
typedef struct GGraphPoint_t {
coord_t x, y;
} GGraphPoint;
typedef enum GGraphPointType_e {
GGRAPH_POINT_NONE, GGRAPH_POINT_DOT, GGRAPH_POINT_SQUARE, GGRAPH_POINT_CIRCLE
} GGraphPointType;
typedef struct GGraphPointStyle_t {
GGraphPointType type;
coord_t size;
color_t color;
} GGraphPointStyle;
typedef enum GGraphLineType_e {
GGRAPH_LINE_NONE, GGRAPH_LINE_SOLID, GGRAPH_LINE_DOT, GGRAPH_LINE_DASH
} GGraphLineType;
typedef struct GGraphLineStyle_t {
GGraphLineType type;
coord_t size;
color_t color;
} GGraphLineStyle;
typedef struct GGraphGridStyle_t {
GGraphLineType type;
coord_t size;
color_t color;
coord_t spacing;
} GGraphGridStyle;
typedef struct GGraphStyle_t {
GGraphPointStyle point;
GGraphLineStyle line;
GGraphLineStyle xaxis;
GGraphLineStyle yaxis;
GGraphGridStyle xgrid;
GGraphGridStyle ygrid;
uint16_t flags;
#define GWIN_GRAPH_STYLE_XAXIS_POSITIVE_ARROWS 0x0001
#define GWIN_GRAPH_STYLE_XAXIS_NEGATIVE_ARROWS 0x0002
#define GWIN_GRAPH_STYLE_YAXIS_POSITIVE_ARROWS 0x0004
#define GWIN_GRAPH_STYLE_YAXIS_NEGATIVE_ARROWS 0x0008
#define GWIN_GRAPH_STYLE_POSITIVE_AXIS_ARROWS (GWIN_GRAPH_STYLE_XAXIS_POSITIVE_ARROWS|GWIN_GRAPH_STYLE_YAXIS_POSITIVE_ARROWS)
#define GWIN_GRAPH_STYLE_NEGATIVE_AXIS_ARROWS (GWIN_GRAPH_STYLE_XAXIS_NEGATIVE_ARROWS|GWIN_GRAPH_STYLE_YAXIS_NEGATIVE_ARROWS)
#define GWIN_GRAPH_STYLE_XAXIS_ARROWS (GWIN_GRAPH_STYLE_XAXIS_POSITIVE_ARROWS|GWIN_GRAPH_STYLE_XAXIS_NEGATIVE_ARROWS)
#define GWIN_GRAPH_STYLE_YAXIS_ARROWS (GWIN_GRAPH_STYLE_YAXIS_POSITIVE_ARROWS|GWIN_GRAPH_STYLE_YAXIS_NEGATIVE_ARROWS)
#define GWIN_GRAPH_STYLE_ALL_AXIS_ARROWS (GWIN_GRAPH_STYLE_XAXIS_ARROWS|GWIN_GRAPH_STYLE_YAXIS_ARROWS)
} GGraphStyle;
// A graph window
typedef struct GGraphObject_t {
GWindowObject gwin;
GGraphStyle style;
coord_t xorigin, yorigin;
coord_t lastx, lasty;
} GGraphObject;
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
GHandle gwinCreateGraph(GGraphObject *gg, coord_t x, coord_t y, coord_t width, coord_t height);
void gwinGraphSetStyle(GHandle gh, const GGraphStyle *pstyle);
void gwinGraphSetOrigin(GHandle gh, coord_t x, coord_t y);
void gwinGraphDrawAxis(GHandle gh);
void gwinGraphStartSet(GHandle gh);
void gwinGraphDrawPoint(GHandle gh, coord_t x, coord_t y);
void gwinGraphDrawPoints(GHandle gh, const GGraphPoint *points, unsigned count);
#ifdef __cplusplus
}
#endif
/*===========================================================================*/
/* Type definitions */
/*===========================================================================*/
typedef struct _Graph {
coord_t origin_x;
coord_t origin_y;
coord_t xmin;
coord_t xmax;
coord_t ymin;
coord_t ymax;
uint16_t grid_size;
uint16_t dot_space;
bool_t full_grid;
bool_t arrows;
color_t axis_color;
color_t grid_color;
/* do never modify values below this line manually */
coord_t x0;
coord_t x1;
coord_t y0;
coord_t y1;
} Graph;
#ifdef __cplusplus
extern "C" {
#endif
/*===========================================================================*/
/* Type definitions */
/*===========================================================================*/
#ifdef __cplusplus
}
#endif
#endif /* GWIN_NEED_GRAPH */
#endif /* _GWIN_GRAPH_H */
/** @} */
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