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adjust dash line threshold for graphs

This commit is contained in:
stefan schippers 2022-12-02 00:13:54 +01:00
parent babc6d7e82
commit f18ed49f6f
1 changed files with 7 additions and 11 deletions
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18
src/draw.c
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@ -1981,17 +1981,13 @@ static void draw_graph_points(int idx, int first, int last,
static void draw_graph_grid(Graph_ctx *gr, void *ct)
{
double deltax, startx, deltay, starty, wx,wy, dash_sizex, dash_sizey;
double deltax, startx, deltay, starty, wx,wy, dash_size;
int j, k;
double mark_size = gr->marginy/10.0;
/* calculate dash length for grid lines */
dash_sizex = 1.5 * xctx->mooz;
dash_sizex = dash_sizex > 2.0 ? 2.0 : dash_sizex;
if(dash_sizex <= 1.0) dash_sizex = 1.0;
dash_sizey = 1.5 * xctx->mooz;
dash_sizey = dash_sizey > 2.0 ? 2.0 : dash_sizey;
if(dash_sizey <= 1.0) dash_sizey = 1.0;
dash_size = 1.5 * xctx->mooz;
dash_size = dash_size < 1.0 ? 0.0: (dash_size > 3.0 ? 3.0 : 2.0);
/* clipping everything outside container area */
/* background */
@ -2015,12 +2011,12 @@ static void draw_graph_grid(Graph_ctx *gr, void *ct)
subwx = wx + deltax * (double)k / ((double)gr->subdivx + 1.0);
if(!axis_within_range(subwx, gr->gx1, gr->gx2, deltax, gr->subdivx)) continue;
if(axis_end(subwx, deltax, gr->gx2)) break;
drawline(GRIDLAYER, ADD, W_X(subwx), W_Y(gr->gy2), W_X(subwx), W_Y(gr->gy1), (int)dash_sizey, ct);
drawline(GRIDLAYER, ADD, W_X(subwx), W_Y(gr->gy2), W_X(subwx), W_Y(gr->gy1), (int)dash_size, ct);
}
if(!axis_within_range(wx, gr->gx1, gr->gx2, deltax, gr->subdivx)) continue;
if(axis_end(wx, deltax, gr->gx2)) break;
/* swap order of gy1 and gy2 since grap y orientation is opposite to xorg orientation */
drawline(GRIDLAYER, ADD, W_X(wx), W_Y(gr->gy2), W_X(wx), W_Y(gr->gy1), (int)dash_sizey, ct);
drawline(GRIDLAYER, ADD, W_X(wx), W_Y(gr->gy2), W_X(wx), W_Y(gr->gy1), (int)dash_size, ct);
drawline(GRIDLAYER, ADD, W_X(wx), W_Y(gr->gy1), W_X(wx), W_Y(gr->gy1) + mark_size, 0, ct); /* axis marks */
/* X-axis labels */
if(gr->logx)
@ -2047,11 +2043,11 @@ static void draw_graph_grid(Graph_ctx *gr, void *ct)
subwy = wy + deltay * (double)k / ((double)gr->subdivy + 1.0);
if(!axis_within_range(subwy, gr->gy1, gr->gy2, deltay, gr->subdivy)) continue;
if(axis_end(subwy, deltay, gr->gy2)) break;
drawline(GRIDLAYER, ADD, W_X(gr->gx1), W_Y(subwy), W_X(gr->gx2), W_Y(subwy), (int)dash_sizex, ct);
drawline(GRIDLAYER, ADD, W_X(gr->gx1), W_Y(subwy), W_X(gr->gx2), W_Y(subwy), (int)dash_size, ct);
}
if(!axis_within_range(wy, gr->gy1, gr->gy2, deltay, gr->subdivy)) continue;
if(axis_end(wy, deltay, gr->gy2)) break;
drawline(GRIDLAYER, ADD, W_X(gr->gx1), W_Y(wy), W_X(gr->gx2), W_Y(wy), (int)dash_sizex, ct);
drawline(GRIDLAYER, ADD, W_X(gr->gx1), W_Y(wy), W_X(gr->gx2), W_Y(wy), (int)dash_size, ct);
drawline(GRIDLAYER, ADD, W_X(gr->gx1) - mark_size, W_Y(wy), W_X(gr->gx1), W_Y(wy), 0, ct); /* axis marks */
/* Y-axis labels */
if(gr->logy)