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