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 1.3 2005/11/27 23:33:29 bernie
32 *#* Revision 1.2 2005/11/04 18:17:45 bernie
33 *#* Fix header guards and includes for new location of gfx module.
35 *#* Revision 1.1 2005/11/04 18:11:35 bernie
36 *#* Move graphics stuff from mware/ to gfx/.
38 *#* Revision 1.7 2005/11/04 16:20:02 bernie
39 *#* Fix reference to README.devlib in header.
41 *#* Revision 1.6 2004/11/16 21:04:23 bernie
42 *#* Update to new naming scheme in mware/gfx.c.
44 *#* Revision 1.5 2004/09/14 20:56:39 bernie
45 *#* Make more generic and adapt to new gfx functions.
47 *#* Revision 1.3 2004/08/11 19:39:12 bernie
48 *#* Use chart_x_t and chart_y_t for the input dataset.
50 *#* Revision 1.1 2004/08/04 03:16:30 bernie
51 *#* Import simple chart drawing code.
59 #ifndef CONFIG_CHART_ARROWS
60 #define CONFIG_CHART_ARROWS 0
64 void chart_init(Bitmap *bm, coord_t xmin, coord_t ymin, coord_t xmax, coord_t ymax)
66 /* Clear the chart area */
67 gfx_rectClear(bm, xmin, ymin, xmax, ymax);
69 gfx_setClipRect(bm, xmin + CHART_BORDERLEFT, ymin + CHART_BORDERTOP,
70 xmax - CHART_BORDERRIGHT, ymax - CHART_BORDERBOTTOM);
76 void chart_setScale(Bitmap *bm, chart_x_t xmin, chart_y_t ymin, chart_x_t xmax, chart_y_t ymax)
78 gfx_setViewRect(bm, xmin, ymin, xmax, ymax);
85 void chart_drawAxis(Bitmap *bm)
87 #if CONFIG_CHART_ARROWS
90 gfx_moveTo(bm, bm->cr.xmin, bm->cr.ymin + 4);
91 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymax - 1);
92 gfx_lineTo(bm, bm->cr.xmax - 4 - 1, bm->cr.ymax - 1);
95 gfx_moveTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
96 gfx_lineTo(bm, bm->cr.xmin + 2, bm->cr.ymin + 3);
97 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymin);
98 gfx_lineTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
100 /* Draw right arrow */
101 gfx_moveTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
102 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax + 1);
103 gfx_lineTo(bm, bm->cr.xmax - 1, bm->cr.ymax - 1);
104 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
106 #else /* CONFIG_CHART_ARROWS */
108 /* Draw a box around the chart */
109 gfx_rectDraw(bm, bm->cr.xmin, bm->cr.ymin, bm->cr.xmax, bm->cr.ymax);
111 #endif /* CONFIG_CHART_ARROWS */
113 //CHECK_WALL(wall_before_raster, WALL_SIZE);
114 //CHECK_WALL(wall_after_raster, WALL_SIZE);
119 * Draw a set of \a curve_cnt connected segments, whose Y coordinates
120 * are identified by the \a curve_y array and X-coordinates are
121 * are evenly spaced by one virtual unit.
123 void chart_drawCurve(Bitmap *bm, const chart_y_t *curve_y, int curve_cnt)
127 gfx_moveTo(bm, gfx_transformX(bm, 0), gfx_transformY(bm, curve_y[0]));
129 for (i = 1; i < curve_cnt; i++)
130 gfx_lineTo(bm, gfx_transformX(bm, i), gfx_transformY(bm, curve_y[i]));
132 //CHECK_WALL(wall_before_raster, WALL_SIZE);
133 //CHECK_WALL(wall_after_raster, WALL_SIZE);
138 * Disegna dei dot in corrispondenza delle coppie (dotsx[i];dotsy[i])
139 * Se dotsx e' NULL, i punti vengono disegnati ad intervalli regolari.
141 void chart_drawDots(Bitmap *bm, const chart_x_t *dots_x, const chart_y_t *dots_y, int cnt)
146 for (i = 0; i < cnt; i++)
149 x = gfx_transformX(bm, dots_x[i]);
151 x = gfx_transformX(bm, i);
153 y = gfx_transformY(bm, dots_y[i]);
155 /* Draw tick over the curve */
157 x - TICKS_WIDTH / 2, y - TICKS_HEIGHT / 2,
158 x + (TICKS_WIDTH + 1) / 2, y + (TICKS_HEIGHT + 1) / 2);
160 /* Draw vertical line from the curve to the X-axis */
161 //gfx_drawLine(bm, x, y, x, bm->cr.ymax - 1);
164 //CHECK_WALL(wall_before_raster, WALL_SIZE);
165 //CHECK_WALL(wall_after_raster, WALL_SIZE);