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add dragging marker

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TT 2017-01-03 16:39:00 +09:00
parent 9037593831
commit 7943a3fe96
4 changed files with 101 additions and 3 deletions
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31
plot.c
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@ -885,6 +885,37 @@ draw_marker(int w, int h, int x, int y, int c, int ch)
}
}
void
marker_position(int m, int t, int *x, int *y)
{
uint32_t index = trace_index[t][markers[m].index];
*x = CELL_X(index);
*y = CELL_Y(index);
}
int
search_nearest_index(int x, int y, int t)
{
uint32_t *index = trace_index[t];
int min_i = -1;
int min_d = 1000;
int i;
for (i = 0; i < 101; i++) {
int dx = x - CELL_X(index[i]) - OFFSETX;
int dy = y - CELL_Y(index[i]) - OFFSETY;
if (dx < 0) dx = -dx;
if (dy < 0) dy = -dy;
if (dx > 20 && dy > 20)
continue;
int d = dx*dx + dy*dy;
if (d < min_d) {
min_i = i;
}
}
return min_i;
}
void
cell_draw_markers(int m, int n, int w, int h)
{