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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
#include "fft_plot.h"
#include "imgui/imgui_internal.h"
#include <string>
#include "common/dsp_source_sink/format_notated.h"
#include "core/style.h"
#include "resources.h"
#include "common/image/text.h"
namespace widgets
{
FFTPlot::FFTPlot(float *v, int size, float min, float max, float scale_res)
{
values = v;
values_size = size;
scale_min = min;
scale_max = max;
scale_resolution = scale_res;
}
void FFTPlot::draw(ImVec2 size)
{
work_mutex.lock();
ImGuiWindow *window = ImGui::GetCurrentWindow();
ImGuiContext &g = *GImGui;
const ImGuiStyle &style = g.Style;
const ImRect frame_bb(window->DC.CursorPos, {window->DC.CursorPos.x + size.x, window->DC.CursorPos.y + size.y});
const ImRect inner_bb({frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y},
{frame_bb.Max.x - 1, frame_bb.Max.y - style.FramePadding.y});
int res_w = size.x; // /*ImMin((int)size.x,*/ values_size /*)*/ - 1;
// int item_count = values_size - 1;
const float t_step = 1.0f / (float)res_w;
const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
float v0 = values[0];
float t0 = 0.0f;
ImVec2 tp0 = ImVec2(t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale));
const ImU32 col_base = ImGui::GetColorU32(ImGuiCol_PlotLines);
// Background
ImGui::RenderFrame(frame_bb.Min, frame_bb.Max, style::theme.plot_bg, true, style.FrameRounding);
// Draw lines
float vscale = ((scale_max - scale_min) / scale_resolution);
float step = (frame_bb.Max.y - frame_bb.Min.y) / scale_resolution;
float value = scale_min;
for (float i = frame_bb.Max.y - step; i >= frame_bb.Min.y; i -= step)
{
ImVec2 pos0 = {frame_bb.Min.x, i};
ImVec2 pos1 = {frame_bb.Max.x, i};
window->DrawList->AddLine(pos0, pos1, style::theme.fft_graduations);
value += vscale;
window->DrawList->AddText({pos0.x, pos0.y + 2}, style::theme.fft_graduations, std::string(std::to_string(int(value)) + " dB").c_str());
}
// Draw Freq Scale
// const ImU32 fcolor_scale = ImGui::GetColorU32(ImGuiCol_Text, 1.0);
if (enable_freq_scale && bandwidth != 0 && frequency != 0)
{
float y_level = inner_bb.Max.y - 8 * ui_scale;
window->DrawList->AddLine({inner_bb.Min.x, y_level}, {inner_bb.Max.x, y_level}, col_base, 3 * ui_scale);
for (int i = 1; i < 10; i++)
{
float x_line = inner_bb.Min.x + (i / 10.0) * res_w;
double freq_here = frequency + ((i / 10.0) * bandwidth) - (bandwidth / 2);
window->DrawList->AddLine({x_line, y_level}, {x_line, y_level - 10 * ui_scale}, col_base, 3);
auto cstr = format_notated(freq_here);
window->DrawList->AddText({x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 30 * ui_scale},
i == 5 ? (ImU32)style::theme.green : col_base,
cstr.c_str());
if (i == 5 && actual_sdr_freq != -1)
{
auto cstr = "(" + format_notated(actual_sdr_freq) + ")";
window->DrawList->AddText({x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 16 * ui_scale},
i == 5 ? (ImU32)style::theme.red : col_base,
cstr.c_str());
}
}
}
// Draw VFOs
if (bandwidth != 0 && frequency != 0 && vfo_freqs.size() > 0)
{
const ImU32 col_base_vfo = style::theme.red;
for (auto vfo : vfo_freqs)
{
double vfreq = vfo.second - frequency;
float y_level = inner_bb.Max.y - 8 * ui_scale;
float x_line = inner_bb.Min.x + (((bandwidth / 2) + vfreq) / bandwidth) * res_w;
window->DrawList->AddLine({x_line, y_level}, {x_line, y_level - 10 * ui_scale}, col_base_vfo, 3);
window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line - 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line + 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
if (sqrtf(powf(ImGui::GetMousePos().x - x_line, 2) + powf(ImGui::GetMousePos().y - y_level, 2)) < 40 * ui_scale)
window->DrawList->AddText({x_line - ImGui::CalcTextSize(vfo.first.c_str()).x / 2, y_level - 45 * ui_scale},
col_base_vfo,
vfo.first.c_str());
}
}
// Draw lines
double fz = (double)values_size / (double)res_w;
for (int n = 0; n < res_w; n++)
{
const float t1 = t0 + t_step;
// const int v1_idx = (int)(t0 * item_count + 0.5f);
float ffpos = n * fz;
if (ffpos >= values_size)
ffpos = values_size - 1;
float finals = -INFINITY;
for (float v = ffpos; v < ffpos + fz; v += 1)
if (finals < values[(int)floor(v)])
finals = values[(int)floor(v)];
const float v1 = finals; // values[v1_idx];
const ImVec2 tp1 = ImVec2(t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale));
ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, tp1);
window->DrawList->AddLine(pos0, pos1, col_base);
t0 = t1;
tp0 = tp1;
}
ImGui::Dummy(size);
work_mutex.unlock();
}
image::Image FFTPlot::drawImg(int size_x, int size_y)
{
work_mutex.lock();
image::Image img(8, size_x, size_y, 3);
image::TextDrawer text_drawer;
text_drawer.init_font(resources::getResourcePath("fonts/font.ttf"));
int res_w = size_x;
const float t_step = 1.0f / (float)res_w;
const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
float t0 = 0.0f;
float v0 = values[0];
ImVec2 tp0 = ImVec2(t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale));
std::vector<double> color_cyan = {0, 237.0 / 255.0, 1};
std::vector<double> color_red = {1, 0, 0};
std::vector<double> color_scale = {0.4, 0.4, 0.4};
// uint8_t color_scale2[] = {int(255 * 0.4), int(255 * 0.4), int(255 * 0.4)};
// Draw lines
float vscale = ((scale_max - scale_min) / scale_resolution);
float step = size_y / scale_resolution;
float value = scale_min;
for (float i = size_y; i >= 0; i -= step)
{
ImVec2 pos0 = {0, i};
ImVec2 pos1 = {(float)(size_x - 1), i};
img.draw_line(pos0.x, pos0.y, pos1.x, pos1.y, color_scale);
value += vscale;
text_drawer.draw_text(img, pos0.x, pos0.y + 2, color_scale, 10, std::string(std::to_string(int(value)) + " dB").c_str());
}
#if 0
// Draw Freq Scale
if (enable_freq_scale && bandwidth != 0 && frequency != 0)
{
float y_level = size_x - 8;
img.draw_line(inner_bb.Min.x, y_level, inner_bb.Max.x, y_level, color_cyan, 3);
for (int i = 1; i < 10; i++)
{
float x_line = inner_bb.Min.x + (i / 10.0) * res_w;
double freq_here = frequency + ((i / 10.0) * bandwidth) - (bandwidth / 2);
img.draw_line(x_line, y_level, x_line, y_level - 10, color_cyan, 3);
auto cstr = format_notated(freq_here);
img.draw_text(x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 30,
i == 5 ? color_scale2 : color_cyan, 10 cstr.c_str());
if (i == 5 && actual_sdr_freq != -1)
{
auto cstr = "(" + format_notated(actual_sdr_freq) + ")";
img.draw_text({x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 16},
i == 5 ? color_scale2 : color_cyan, 10,
cstr.c_str());
}
}
}
#endif
// Draw VFOs
if (bandwidth != 0 && frequency != 0 && vfo_freqs.size() > 0)
{
// const ImU32 col_base_vfo = style::theme.red;
for (auto vfo : vfo_freqs)
{
double vfreq = vfo.second - frequency;
float y_level = size_y - 8 * ui_scale;
float x_line = 0 + (((bandwidth / 2) + vfreq) / bandwidth) * res_w;
// window->DrawList->AddLine({x_line, y_level}, {x_line, y_level - 10 * ui_scale}, col_base_vfo, 3);
// window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line - 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
// window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line + 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
img.draw_line(x_line, y_level, x_line, y_level - 10, color_red);
img.draw_line(x_line, y_level - 10, x_line - 5, y_level - 20, color_red);
img.draw_line(x_line, y_level - 10, x_line + 5, y_level - 20, color_red);
// if (sqrtf(powf(ImGui::GetMousePos().x - x_line, 2) + powf(ImGui::GetMousePos().y - y_level, 2)) < 40 * ui_scale)
// window->DrawList->AddText({x_line - ImGui::CalcTextSize(vfo.first.c_str()).x / 2, y_level - 45 * ui_scale},
// col_base_vfo,
// vfo.first.c_str());
}
}
// Draw lines
double fz = (double)values_size / (double)res_w;
for (int n = 0; n < res_w; n++)
{
const float t1 = t0 + t_step;
// const int v1_idx = (int)(t0 * item_count + 0.5f);
float ffpos = n * fz;
if (ffpos >= values_size)
ffpos = values_size - 1;
float finals = -INFINITY;
for (float v = ffpos; v < ffpos + fz; v += 1)
if (finals < values[(int)floor(v)])
finals = values[(int)floor(v)];
const float v1 = finals; // values[v1_idx];
const ImVec2 tp1 = ImVec2(t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale));
ImVec2 pos0 = ImLerp({0, 0}, {(float)size_x, (float)size_y}, tp0);
ImVec2 pos1 = ImLerp({0, 0}, {(float)size_x, (float)size_y}, tp1);
img.draw_line(pos0.x, pos0.y, pos1.x, pos1.y, color_cyan);
t0 = t1;
tp0 = tp1;
}
work_mutex.unlock();
return img;
}
}
|
