plot2d.axis source code

1 ///
2 module plot2d.axis;
3 
4 import plot2d.drawable;
5 
6 ///
7 class Axis : Drawable, Stylized
8 {
9     mixin StylizedHelper!"axis";
10 
11     bool vertical = true;
12     bool horisontal = true;
13 
14     double[] dash = [];
15     double dashOffset = 0.0;
16 
17     ///
18     this(Style root) { setRootStyle(root); }
19 
20     override void draw(Ctx cr, Trtor tr)
21     {
22         setupStyle(cr);
23         drawLines(cr, tr);
24         cr.stroke();
25     }
26 
27     ///
28     void setupStyle(Ctx cr)
29     {
30         cr.setLineWidth(style.number.get("linewidth", 1));
31         cr.setColor(style.color.get("color", Color.mono(0, 0.8)));
32         cr.setDash(dash, dashOffset);
33     }
34 
35     abstract void drawLines(Ctx, Trtor);
36 }
37 
38 ///
39 class LBAxis : Axis
40 {
41     ///
42     this(Style root) { super(root); }
43 
44     override void drawLines(Ctx cr, Trtor tr)
45     {
46         auto im = tr.inMargin;
47 
48         if (vertical) cr.lineP2P(im.lt, im.lb);
49         if (horisontal) cr.lineP2P(im.lb, im.rb);
50     }
51 }
52 
53 ///
54 class ZeroAxis : Axis
55 {
56     ///
57     this(Style root) { super(root); }
58 
59     override void drawLines(Ctx cr, Trtor tr)
60     {
61         auto im = tr.inMargin;
62         auto z = tr.toDA(0,0);
63         if (vertical) cr.lineP2P(z.x, im.h.min, z.x, im.h.max);
64         if (horisontal) cr.lineP2P(im.w.min, z.y, im.w.max, z.y);
65     }
66 }
67 
68 ///
69 class Grid : Axis
70 {
71     ///
72     this(Style root) { super(root); }
73 
74     override string styleName() @property { return "grid"; }
75 
76     override void drawLines(Ctx cr, Trtor tr)
77     {
78         auto im = tr.inMargin;
79         auto s = tr.gridStep;
80         auto o = tr.gridOffset;
81 
82         if (vertical)
83             for (double i = im.w.min + o.x; i <= im.w.max; i += s.x)
84                 cr.lineP2P(i, im.h.max, i, im.h.min);
85 
86         if (horisontal)
87             for (double i = im.h.max - o.y; i > im.h.min; i -= s.y)
88                 cr.lineP2P(im.w.min, i, im.w.max, i);
89     }
90 }