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 1.4 2006/07/19 12:56:26 bernie
30 *#* Convert to new Doxygen style.
32 *#* Revision 1.3 2005/11/27 23:33:29 bernie
35 *#* Revision 1.2 2005/11/04 18:17:45 bernie
36 *#* Fix header guards and includes for new location of gfx module.
38 *#* Revision 1.1 2005/11/04 18:11:35 bernie
39 *#* Move graphics stuff from mware/ to gfx/.
41 *#* Revision 1.7 2005/11/04 16:20:02 bernie
42 *#* Fix reference to README.devlib in header.
44 *#* Revision 1.6 2004/11/16 21:04:23 bernie
45 *#* Update to new naming scheme in mware/gfx.c.
47 *#* Revision 1.5 2004/09/14 20:56:39 bernie
48 *#* Make more generic and adapt to new gfx functions.
50 *#* Revision 1.3 2004/08/11 19:39:12 bernie
51 *#* Use chart_x_t and chart_y_t for the input dataset.
53 *#* Revision 1.1 2004/08/04 03:16:30 bernie
54 *#* Import simple chart drawing code.
62 #ifndef CONFIG_CHART_ARROWS
63 #define CONFIG_CHART_ARROWS 0
67 void chart_init(Bitmap *bm, coord_t xmin, coord_t ymin, coord_t xmax, coord_t ymax)
69 /* Clear the chart area */
70 gfx_rectClear(bm, xmin, ymin, xmax, ymax);
72 gfx_setClipRect(bm, xmin + CHART_BORDERLEFT, ymin + CHART_BORDERTOP,
73 xmax - CHART_BORDERRIGHT, ymax - CHART_BORDERBOTTOM);
79 void chart_setScale(Bitmap *bm, chart_x_t xmin, chart_y_t ymin, chart_x_t xmax, chart_y_t ymax)
81 gfx_setViewRect(bm, xmin, ymin, xmax, ymax);
88 void chart_drawAxis(Bitmap *bm)
90 #if CONFIG_CHART_ARROWS
93 gfx_moveTo(bm, bm->cr.xmin, bm->cr.ymin + 4);
94 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymax - 1);
95 gfx_lineTo(bm, bm->cr.xmax - 4 - 1, bm->cr.ymax - 1);
98 gfx_moveTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
99 gfx_lineTo(bm, bm->cr.xmin + 2, bm->cr.ymin + 3);
100 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymin);
101 gfx_lineTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
103 /* Draw right arrow */
104 gfx_moveTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
105 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax + 1);
106 gfx_lineTo(bm, bm->cr.xmax - 1, bm->cr.ymax - 1);
107 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
109 #else /* CONFIG_CHART_ARROWS */
111 /* Draw a box around the chart */
112 gfx_rectDraw(bm, bm->cr.xmin, bm->cr.ymin, bm->cr.xmax, bm->cr.ymax);
114 #endif /* CONFIG_CHART_ARROWS */
116 //CHECK_WALL(wall_before_raster, WALL_SIZE);
117 //CHECK_WALL(wall_after_raster, WALL_SIZE);
122 * Draw a set of \a curve_cnt connected segments, whose Y coordinates
123 * are identified by the \a curve_y array and X-coordinates are
124 * are evenly spaced by one virtual unit.
126 void chart_drawCurve(Bitmap *bm, const chart_y_t *curve_y, int curve_cnt)
130 gfx_moveTo(bm, gfx_transformX(bm, 0), gfx_transformY(bm, curve_y[0]));
132 for (i = 1; i < curve_cnt; i++)
133 gfx_lineTo(bm, gfx_transformX(bm, i), gfx_transformY(bm, curve_y[i]));
135 //CHECK_WALL(wall_before_raster, WALL_SIZE);
136 //CHECK_WALL(wall_after_raster, WALL_SIZE);
141 * Disegna dei dot in corrispondenza delle coppie (dotsx[i];dotsy[i])
142 * Se dotsx e' NULL, i punti vengono disegnati ad intervalli regolari.
144 void chart_drawDots(Bitmap *bm, const chart_x_t *dots_x, const chart_y_t *dots_y, int cnt)
149 for (i = 0; i < cnt; i++)
152 x = gfx_transformX(bm, dots_x[i]);
154 x = gfx_transformX(bm, i);
156 y = gfx_transformY(bm, dots_y[i]);
158 /* Draw tick over the curve */
160 x - TICKS_WIDTH / 2, y - TICKS_HEIGHT / 2,
161 x + (TICKS_WIDTH + 1) / 2, y + (TICKS_HEIGHT + 1) / 2);
163 /* Draw vertical line from the curve to the X-axis */
164 //gfx_drawLine(bm, x, y, x, bm->cr.ymax - 1);
167 //CHECK_WALL(wall_before_raster, WALL_SIZE);
168 //CHECK_WALL(wall_after_raster, WALL_SIZE);