56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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#include "glcd.h"
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#define GRID_X 20
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#define GRID_Y 20
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#define MARKSIZE 5 // half
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static uint16_t x, y; // origins in graph
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void graphDrawSystem(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color) {
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uint16_t i, length;
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volatile uint16_t off;
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x = x0;
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y = y0;
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// X-Axis
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length = x1 - x0;
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lcdDrawLine(x0, y0, x1, y0, color);
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lcdDrawLine(x1, y0, x1-5, y0+5, color);
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lcdDrawLine(x1, y0, x1-5, y0-5, color);
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for(i=1; i<(length / GRID_X); i++) {
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off = x0 + i*GRID_X;
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lcdDrawLine(off, y0-MARKSIZE, off, y0+MARKSIZE, color);
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}
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// Y-Axis
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length = y0 - y1;
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lcdDrawLine(x0, y0, x0, y1, color);
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lcdDrawLine(x0, y1, x0-5, y1+5, color);
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lcdDrawLine(x0, y1, x0+5, y1+5, color);
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for(i=1; i<(length / GRID_Y); i++) {
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off = x0 + i*GRID_Y;
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lcdDrawLine(x0-MARKSIZE, off, x0+MARKSIZE, off, color);
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}
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}
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void graphDrawDots(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16_t color) {
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uint16_t i;
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for(i=0; i<entries; i++)
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lcdDrawCircle(coord[i][0]+x, y-coord[i][1], radius, 1, color);
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}
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void graphDrawNet(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16_t lineColor, uint16_t dotColor) {
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uint16_t i;
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for(i = 0; i < entries; ++i)
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lcdDrawLine(coord[i-1][0]+x, y-coord[i-1][1], coord[i][0]+x, y-coord[i][1], lineColor);
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for(i=0; i<entries; ++i)
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if(radius != 0)
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lcdDrawCircle(coord[i][0]+x, y-coord[i][1], radius, 1, dotColor);
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}
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