-rw-r--r-- | r/connect.R | 2 | ||||
-rw-r--r-- | src/Makefile.am | 3 | ||||
-rw-r--r-- | src/controller/exp004reshape.c | 11 | ||||
-rw-r--r-- | src/model/density_legend_geometry.c | 81 | ||||
-rw-r--r-- | src/model/density_legend_geometry.h | 9 | ||||
-rw-r--r-- | src/model/display_list_index.h | 6 | ||||
-rw-r--r-- | src/model/exp004state.h | 14 | ||||
-rw-r--r-- | src/util/check_error.c | 6 | ||||
-rw-r--r-- | src/view/exp004geometry.c | 7 | ||||
-rw-r--r-- | src/view/exp004init.c | 8 | ||||
-rw-r--r-- | src/view/exp004view.c | 4 |
11 files changed, 124 insertions, 27 deletions
diff --git a/src/model/density_legend_geometry.c b/src/model/density_legend_geometry.c new file mode 100644 index 0000000..ab3e46c --- a/dev/null +++ b/src/model/density_legend_geometry.c | |||
@@ -0,0 +1,81 @@ | |||
1 | #include "density_legend_geometry.h" | ||
2 | #include "../view/exp004state0.h" | ||
3 | #include "../controller/exp004reshape.h" | ||
4 | #include <GL/glut.h> | ||
5 | #include <stdio.h> | ||
6 | |||
7 | #define S exp004state0 | ||
8 | |||
9 | void | ||
10 | density_legend_geometry (void) | ||
11 | { | ||
12 | glNewList (S.list_offset + DENSITY_LEGEND_GEOMETRY, GL_COMPILE); | ||
13 | glPolygonMode (GL_FRONT, GL_FILL); | ||
14 | glColor4f (DEFAULT_COLOR_R, DEFAULT_COLOR_G, DEFAULT_COLOR_B, | ||
15 | DEFAULT_COLOR_A); | ||
16 | |||
17 | /* | ||
18 | * This value should be a percentage of the world height so that it | ||
19 | * remains a fixed number of pixels tall when the window is resized | ||
20 | * or zoomed. | ||
21 | */ | ||
22 | double legend_height = 0.5; | ||
23 | |||
24 | /* | ||
25 | * Calculate the bounding box for the legend. | ||
26 | */ | ||
27 | |||
28 | double a[2]; | ||
29 | double b[2]; | ||
30 | double c[2]; | ||
31 | double d[2]; | ||
32 | |||
33 | const double *left; | ||
34 | const double *right; | ||
35 | const double *top; | ||
36 | |||
37 | if (S.zoom.active) | ||
38 | { | ||
39 | left = &S.zoom.coords[0]; | ||
40 | right = &S.zoom.coords[1]; | ||
41 | top = &S.zoom.coords[3]; | ||
42 | } | ||
43 | else | ||
44 | { | ||
45 | left = &S.ortho.min_x; | ||
46 | top = &S.ortho.max_y; | ||
47 | right = &S.ortho.max_x; | ||
48 | } | ||
49 | |||
50 | a[0] = *left; | ||
51 | a[1] = *top; | ||
52 | b[0] = *right; | ||
53 | b[1] = *top; | ||
54 | c[0] = *right; | ||
55 | c[1] = *top - legend_height; | ||
56 | d[0] = *left; | ||
57 | d[1] = *top - legend_height; | ||
58 | |||
59 | /* | ||
60 | * Overlay a legend from default saturation / alpha to full saturation. | ||
61 | */ | ||
62 | for (int i = 1; i <= 1 / DEFAULT_COLOR_A; i++) | ||
63 | { | ||
64 | glBegin (GL_QUADS); | ||
65 | glVertex2dv (a); | ||
66 | glVertex2dv (b); | ||
67 | glVertex2dv (c); | ||
68 | glVertex2dv (d); | ||
69 | glEnd (); | ||
70 | |||
71 | /* | ||
72 | * Step left to right along the x-coordinate. | ||
73 | */ | ||
74 | a[0] = *left + (*right - *left) * (DEFAULT_COLOR_A * i); | ||
75 | d[0] = a[0]; | ||
76 | } | ||
77 | |||
78 | glEndList (); | ||
79 | |||
80 | return; | ||
81 | } | ||