-
Notifications
You must be signed in to change notification settings - Fork 0
/
XYGraphModule.cpp
137 lines (113 loc) · 3.33 KB
/
XYGraphModule.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
#include "XYGraphModule.hpp"
#include <Graphics/Graphics.hpp>
#include <Vector/VectorGL.hpp>
#include <sstream>
using std::istringstream;
using std::make_pair;
namespace {
Module *create_module(const std::string ¶ms) {
XYGraphModule *m = new XYGraphModule();
istringstream p(params);
p >> m->min_val >> m->max_val;
return m;
}
class Fred {
public:
Fred() {
register_module("xygraph", create_module, "(minx,y,z) (maxx,y,z)");
}
} fred;
}
Vector2f XYGraphModule::size() {
return make_vector(2.0f, 2.0f);
}
void XYGraphModule::draw(Box2f viewport, Box2f screen_viewport, float scale, unsigned int recurse) {
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glBoxToBox(viewport, screen_viewport);
glBegin(GL_QUADS);
glColor3f(0.0f, 0.0f, 0.0f);
glVertex2f(-1.0f, -1.0f);
glVertex2f( 1.0f, -1.0f);
glVertex2f( 1.0f, 1.0f);
glVertex2f(-1.0f, 1.0f);
glEnd();
glPushAttrib(GL_SCISSOR_BIT);
{ //enable clipping:
int min_x = int((0.5f / Graphics::aspectf() * screen_viewport.min.x + 0.5f) * Graphics::screen_x + 0.5f);
int max_x = int((0.5f / Graphics::aspectf() * screen_viewport.max.x + 0.5f) * Graphics::screen_x + 0.5f);
int min_y = int((0.5f * screen_viewport.min.y + 0.5f) * Graphics::screen_y + 0.5f);
int max_y = int((0.5f * screen_viewport.max.y + 0.5f) * Graphics::screen_y + 0.5f);
if (min_x < 0) min_x = 0;
if (max_x > Graphics::screen_x) max_x = Graphics::screen_x;
if (min_y < 0) min_y = 0;
if (max_y > Graphics::screen_y) max_y = Graphics::screen_y;
glScissor(min_x, min_y, max_x - min_x, max_y - min_y);
}
glEnable(GL_SCISSOR_TEST);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glScalef(2.0f / (max_val.x - min_val.x), 2.0f / (max_val.y - min_val.y), 1.0f);
glTranslatef(-0.5f * (max_val.x + min_val.x), -0.5f * (max_val.y + min_val.y), 0.0f);
//XYGraph lines:
glBegin(GL_LINE_STRIP);
glColor3f(0.7f, 0.7f, 0.7f);
for (auto p = pts.begin(); p != pts.end(); ++p) {
glVertex2f(p->first, p->second);
}
glEnd();
if (recording) {
//current operating point:
glBegin(GL_QUADS);
glColor3f(0.9f, 0.5f, 0.5f);
Vector2f s = 0.01f * (max_val.xy - min_val.xy);
glVertex2f(x_val()-s.x, y_val()-s.y);
glVertex2f(x_val()-s.x, y_val()+s.y);
glVertex2f(x_val()+s.x, y_val()+s.y);
glVertex2f(x_val()+s.x, y_val()-s.y);
glEnd();
}
glPopMatrix();
glMatrixMode(GL_PROJECTION);
//disable scissor:
glPopAttrib();
if (recording) {
glBegin(GL_LINE_LOOP);
glColor3f(0.9f, 0.9f, 0.9f);
glVertex2f(-0.95f, -0.95f);
glVertex2f( 0.95f, -0.95f);
glVertex2f( 0.95f, 0.95f);
glVertex2f(-0.95f, 0.95f);
glEnd();
}
glBegin(GL_LINE_LOOP);
glColor3f(1.0f, 1.0f, 1.0f);
glVertex2f(-1.0f, -1.0f);
glVertex2f( 1.0f, -1.0f);
glVertex2f( 1.0f, 1.0f);
glVertex2f(-1.0f, 1.0f);
glEnd();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
Graphics::gl_errors("XYGraph::draw");
}
void XYGraphModule::update(float elapsed_time) {
if (recording) {
if (z_val() != old_val.z) {
pts.clear();
old_val.z = z_val();
}
if (x_val() != old_val.x || y_val() != old_val.y) {
pts.insert(make_pair(x_val(), y_val()));
old_val.x = x_val();
old_val.y = y_val();
}
}
}
bool XYGraphModule::handle_event(SDL_Event const &event, Vector2f local_mouse) {
if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_LEFT) {
recording = !recording;
if (recording) pts.clear();
}
return false;
}