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 1.1 2005/11/04 18:11:35 bernie
30 *#* Move graphics stuff from mware/ to gfx/.
32 *#* Revision 1.7 2005/11/04 16:20:02 bernie
33 *#* Fix reference to README.devlib in header.
35 *#* Revision 1.6 2004/11/16 21:04:23 bernie
36 *#* Update to new naming scheme in mware/gfx.c.
38 *#* Revision 1.5 2004/09/14 20:56:39 bernie
39 *#* Make more generic and adapt to new gfx functions.
41 *#* Revision 1.3 2004/08/11 19:39:12 bernie
42 *#* Use chart_x_t and chart_y_t for the input dataset.
44 *#* Revision 1.1 2004/08/04 03:16:30 bernie
45 *#* Import simple chart drawing code.
50 #include <mware/gfx.h>
53 #ifndef CONFIG_CHART_ARROWS
54 #define CONFIG_CHART_ARROWS 0
58 void chart_init(Bitmap *bm, coord_t xmin, coord_t ymin, coord_t xmax, coord_t ymax)
60 /* Clear the chart area */
61 gfx_rectClear(bm, xmin, ymin, xmax, ymax);
63 gfx_setClipRect(bm, xmin + CHART_BORDERLEFT, ymin + CHART_BORDERTOP,
64 xmax - CHART_BORDERRIGHT, ymax - CHART_BORDERBOTTOM);
70 void chart_setScale(Bitmap *bm, chart_x_t xmin, chart_y_t ymin, chart_x_t xmax, chart_y_t ymax)
72 gfx_setViewRect(bm, xmin, ymin, xmax, ymax);
79 void chart_drawAxis(Bitmap *bm)
81 #if CONFIG_CHART_ARROWS
84 gfx_moveTo(bm, bm->cr.xmin, bm->cr.ymin + 4);
85 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymax - 1);
86 gfx_lineTo(bm, bm->cr.xmax - 4 - 1, bm->cr.ymax - 1);
89 gfx_moveTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
90 gfx_lineTo(bm, bm->cr.xmin + 2, bm->cr.ymin + 3);
91 gfx_lineTo(bm, bm->cr.xmin, bm->cr.ymin);
92 gfx_lineTo(bm, bm->cr.xmin - 2, bm->cr.ymin + 3);
94 /* Draw right arrow */
95 gfx_moveTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
96 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax + 1);
97 gfx_lineTo(bm, bm->cr.xmax - 1, bm->cr.ymax - 1);
98 gfx_lineTo(bm, bm->cr.xmax - 4, bm->cr.ymax - 3);
100 #else /* CONFIG_CHART_ARROWS */
102 /* Draw a box around the chart */
103 gfx_rectDraw(bm, bm->cr.xmin, bm->cr.ymin, bm->cr.xmax, bm->cr.ymax);
105 #endif /* CONFIG_CHART_ARROWS */
107 //CHECK_WALL(wall_before_raster, WALL_SIZE);
108 //CHECK_WALL(wall_after_raster, WALL_SIZE);
113 * Draw a set of \a curve_cnt connected segments, whose Y coordinates
114 * are identified by the \a curve_y array and X-coordinates are
115 * are evenly spaced by one virtual unit.
117 void chart_drawCurve(Bitmap *bm, const chart_y_t *curve_y, int curve_cnt)
121 gfx_moveTo(bm, gfx_transformX(bm, 0), gfx_transformY(bm, curve_y[0]));
123 for (i = 1; i < curve_cnt; i++)
124 gfx_lineTo(bm, gfx_transformX(bm, i), gfx_transformY(bm, curve_y[i]));
126 //CHECK_WALL(wall_before_raster, WALL_SIZE);
127 //CHECK_WALL(wall_after_raster, WALL_SIZE);
132 * Disegna dei dot in corrispondenza delle coppie (dotsx[i];dotsy[i])
133 * Se dotsx e' NULL, i punti vengono disegnati ad intervalli regolari.
135 void chart_drawDots(Bitmap *bm, const chart_x_t *dots_x, const chart_y_t *dots_y, int cnt)
140 for (i = 0; i < cnt; i++)
143 x = gfx_transformX(bm, dots_x[i]);
145 x = gfx_transformX(bm, i);
147 y = gfx_transformY(bm, dots_y[i]);
149 /* Draw tick over the curve */
151 x - TICKS_WIDTH / 2, y - TICKS_HEIGHT / 2,
152 x + (TICKS_WIDTH + 1) / 2, y + (TICKS_HEIGHT + 1) / 2);
154 /* Draw vertical line from the curve to the X-axis */
155 //gfx_drawLine(bm, x, y, x, bm->cr.ymax - 1);
158 //CHECK_WALL(wall_before_raster, WALL_SIZE);
159 //CHECK_WALL(wall_after_raster, WALL_SIZE);