4 * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 1999, 2000, 2001, 2003 Bernardo Innocenti <bernie@develer.com>
6 * This file is part of DevLib - See README.devlib for information.
9 * \brief Simple charts on top of mware/gfx routines (implementation).
14 * bm = chart_init(0, ymax, N_POINTS_CURVE, ymin);
16 * chart_drawCurve(bm, curve_y, curve_points + 1);
17 * gfx_setViewRect(bm, xmin, ymax, xmax, ymin);
18 * chart_drawDots(bm, samples_x, samples_y, samples_cnt);
24 * \author Bernardo Innocenti <bernie@develer.com>
29 *#* Revision 1.7 2005/11/04 16:20:02 bernie
30 *#* Fix reference to README.devlib in header.
32 *#* Revision 1.6 2004/11/16 21:04:23 bernie
33 *#* Update to new naming scheme in mware/gfx.c.
35 *#* Revision 1.5 2004/09/14 20:56:39 bernie
36 *#* Make more generic and adapt to new gfx functions.
38 *#* Revision 1.3 2004/08/11 19:39:12 bernie
39 *#* Use chart_x_t and chart_y_t for the input dataset.
41 *#* Revision 1.1 2004/08/04 03:16:30 bernie
42 *#* Import simple chart drawing code.
47 #include <mware/gfx.h>
50 #ifndef CONFIG_CHART_ARROWS
51 #define CONFIG_CHART_ARROWS 0
55 void chart_init(Bitmap *bm, coord_t xmin, coord_t ymin, coord_t xmax, coord_t ymax)
57 /* Clear the chart area */
58 gfx_rectClear(bm, xmin, ymin, xmax, ymax);
60 gfx_setClipRect(bm, xmin + CHART_BORDERLEFT, ymin + CHART_BORDERTOP,
61 xmax - CHART_BORDERRIGHT, ymax - CHART_BORDERBOTTOM);
67 void chart_setScale(Bitmap *bm, chart_x_t xmin, chart_y_t ymin, chart_x_t xmax, chart_y_t ymax)
69 gfx_setViewRect(bm, xmin, ymin, xmax, ymax);
76 void chart_drawAxis(Bitmap *bm)
78 #if CONFIG_CHART_ARROWS
81 gfx_moveTo(bm, bm->cr.xmin, bm->cr.ymin + 4);
82 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymax - 1);
83 gfx_lineTo(bm, bm->cr.xmax - 4 - 1, bm->cr.ymax - 1);
86 gfx_moveTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
87 gfx_lineTo(bm, bm->cr.xmin + 2, bm->cr.ymin + 3);
88 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymin);
89 gfx_lineTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
91 /* Draw right arrow */
92 gfx_moveTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
93 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax + 1);
94 gfx_lineTo(bm, bm->cr.xmax - 1, bm->cr.ymax - 1);
95 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
97 #else /* CONFIG_CHART_ARROWS */
99 /* Draw a box around the chart */
100 gfx_rectDraw(bm, bm->cr.xmin, bm->cr.ymin, bm->cr.xmax, bm->cr.ymax);
102 #endif /* CONFIG_CHART_ARROWS */
104 //CHECK_WALL(wall_before_raster, WALL_SIZE);
105 //CHECK_WALL(wall_after_raster, WALL_SIZE);
110 * Draw a set of \a curve_cnt connected segments, whose Y coordinates
111 * are identified by the \a curve_y array and X-coordinates are
112 * are evenly spaced by one virtual unit.
114 void chart_drawCurve(Bitmap *bm, const chart_y_t *curve_y, int curve_cnt)
118 gfx_moveTo(bm, gfx_transformX(bm, 0), gfx_transformY(bm, curve_y[0]));
120 for (i = 1; i < curve_cnt; i++)
121 gfx_lineTo(bm, gfx_transformX(bm, i), gfx_transformY(bm, curve_y[i]));
123 //CHECK_WALL(wall_before_raster, WALL_SIZE);
124 //CHECK_WALL(wall_after_raster, WALL_SIZE);
129 * Disegna dei dot in corrispondenza delle coppie (dotsx[i];dotsy[i])
130 * Se dotsx e' NULL, i punti vengono disegnati ad intervalli regolari.
132 void chart_drawDots(Bitmap *bm, const chart_x_t *dots_x, const chart_y_t *dots_y, int cnt)
137 for (i = 0; i < cnt; i++)
140 x = gfx_transformX(bm, dots_x[i]);
142 x = gfx_transformX(bm, i);
144 y = gfx_transformY(bm, dots_y[i]);
146 /* Draw tick over the curve */
148 x - TICKS_WIDTH / 2, y - TICKS_HEIGHT / 2,
149 x + (TICKS_WIDTH + 1) / 2, y + (TICKS_HEIGHT + 1) / 2);
151 /* Draw vertical line from the curve to the X-axis */
152 //gfx_drawLine(bm, x, y, x, bm->cr.ymax - 1);
155 //CHECK_WALL(wall_before_raster, WALL_SIZE);
156 //CHECK_WALL(wall_after_raster, WALL_SIZE);