mirror of
https://github.com/SatDump/SatDump
synced 2026-08-13 17:47:30 -04:00
e114d512ff
- Fix crash in MSG decoder on Windows - Add abort button to official products downloader - Move ui-scale to style, where it belongs - Fix a pile of compiler warnings
255 lines
11 KiB
C++
255 lines
11 KiB
C++
#include "fft_plot.h"
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#include "imgui/imgui_internal.h"
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#include <string>
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#include "common/dsp_source_sink/format_notated.h"
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#include "core/style.h"
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#include "resources.h"
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#include "common/image/text.h"
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namespace widgets
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{
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FFTPlot::FFTPlot(float *v, int size, float min, float max, float scale_res)
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{
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values = v;
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values_size = size;
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scale_min = min;
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scale_max = max;
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scale_resolution = scale_res;
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}
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void FFTPlot::draw(ImVec2 size)
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{
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work_mutex.lock();
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ImGuiWindow *window = ImGui::GetCurrentWindow();
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ImGuiContext &g = *GImGui;
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const ImGuiStyle &style = g.Style;
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const ImRect frame_bb(window->DC.CursorPos, {window->DC.CursorPos.x + size.x, window->DC.CursorPos.y + size.y});
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const ImRect inner_bb({frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y},
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{frame_bb.Max.x - 1, frame_bb.Max.y - style.FramePadding.y});
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int res_w = size.x; // /*ImMin((int)size.x,*/ values_size /*)*/ - 1;
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// int item_count = values_size - 1;
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const float t_step = 1.0f / (float)res_w;
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const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
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float v0 = values[0];
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float t0 = 0.0f;
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ImVec2 tp0 = ImVec2(t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale));
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const ImU32 col_base = ImGui::GetColorU32(ImGuiCol_PlotLines);
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// Background
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ImGui::RenderFrame(frame_bb.Min, frame_bb.Max, style::theme.plot_bg, true, style.FrameRounding);
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// Draw lines
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float vscale = ((scale_max - scale_min) / scale_resolution);
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float step = (frame_bb.Max.y - frame_bb.Min.y) / scale_resolution;
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float value = scale_min;
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for (float i = frame_bb.Max.y - step; i >= frame_bb.Min.y; i -= step)
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{
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ImVec2 pos0 = {frame_bb.Min.x, i};
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ImVec2 pos1 = {frame_bb.Max.x, i};
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window->DrawList->AddLine(pos0, pos1, style::theme.fft_graduations);
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value += vscale;
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window->DrawList->AddText({pos0.x, pos0.y + 2}, style::theme.fft_graduations, std::string(std::to_string(int(value)) + " dB").c_str());
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}
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// Draw Freq Scale
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// const ImU32 fcolor_scale = ImGui::GetColorU32(ImGuiCol_Text, 1.0);
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if (enable_freq_scale && bandwidth != 0 && frequency != 0)
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{
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float y_level = inner_bb.Max.y - 8 * ui_scale;
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window->DrawList->AddLine({inner_bb.Min.x, y_level}, {inner_bb.Max.x, y_level}, col_base, 3 * ui_scale);
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for (int i = 1; i < 10; i++)
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{
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float x_line = inner_bb.Min.x + (i / 10.0) * res_w;
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double freq_here = frequency + ((i / 10.0) * bandwidth) - (bandwidth / 2);
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window->DrawList->AddLine({x_line, y_level}, {x_line, y_level - 10 * ui_scale}, col_base, 3);
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auto cstr = format_notated(freq_here);
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window->DrawList->AddText({x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 30 * ui_scale},
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i == 5 ? (ImU32)style::theme.green : col_base,
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cstr.c_str());
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if (i == 5 && actual_sdr_freq != -1)
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{
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auto cstr = "(" + format_notated(actual_sdr_freq) + ")";
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window->DrawList->AddText({x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 16 * ui_scale},
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i == 5 ? (ImU32)style::theme.red : col_base,
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cstr.c_str());
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}
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}
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}
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// Draw VFOs
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if (bandwidth != 0 && frequency != 0 && vfo_freqs.size() > 0)
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{
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const ImU32 col_base_vfo = style::theme.red;
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for (auto vfo : vfo_freqs)
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{
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double vfreq = vfo.second - frequency;
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float y_level = inner_bb.Max.y - 8 * ui_scale;
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float x_line = inner_bb.Min.x + (((bandwidth / 2) + vfreq) / bandwidth) * res_w;
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window->DrawList->AddLine({x_line, y_level}, {x_line, y_level - 10 * ui_scale}, col_base_vfo, 3);
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window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line - 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
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window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line + 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
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if (sqrtf(powf(ImGui::GetMousePos().x - x_line, 2) + powf(ImGui::GetMousePos().y - y_level, 2)) < 40 * ui_scale)
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window->DrawList->AddText({x_line - ImGui::CalcTextSize(vfo.first.c_str()).x / 2, y_level - 45 * ui_scale},
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col_base_vfo,
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vfo.first.c_str());
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}
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}
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// Draw lines
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double fz = (double)values_size / (double)res_w;
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for (int n = 0; n < res_w; n++)
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{
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const float t1 = t0 + t_step;
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// const int v1_idx = (int)(t0 * item_count + 0.5f);
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float ffpos = n * fz;
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if (ffpos >= values_size)
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ffpos = values_size - 1;
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float finals = -INFINITY;
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for (float v = ffpos; v < ffpos + fz; v += 1)
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if (finals < values[(int)floor(v)])
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finals = values[(int)floor(v)];
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const float v1 = finals; // values[v1_idx];
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const ImVec2 tp1 = ImVec2(t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale));
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ImVec2 pos0 = ImLerp(inner_bb.Min, inner_bb.Max, tp0);
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ImVec2 pos1 = ImLerp(inner_bb.Min, inner_bb.Max, tp1);
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window->DrawList->AddLine(pos0, pos1, col_base);
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t0 = t1;
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tp0 = tp1;
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}
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ImGui::Dummy(size);
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work_mutex.unlock();
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}
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image::Image FFTPlot::drawImg(int size_x, int size_y)
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{
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work_mutex.lock();
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image::Image img(8, size_x, size_y, 3);
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image::TextDrawer text_drawer;
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text_drawer.init_font(resources::getResourcePath("fonts/font.ttf"));
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int res_w = size_x;
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const float t_step = 1.0f / (float)res_w;
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const float inv_scale = (scale_min == scale_max) ? 0.0f : (1.0f / (scale_max - scale_min));
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float t0 = 0.0f;
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float v0 = values[0];
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ImVec2 tp0 = ImVec2(t0, 1.0f - ImSaturate((v0 - scale_min) * inv_scale));
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std::vector<double> color_cyan = {0, 237.0 / 255.0, 1};
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std::vector<double> color_red = {1, 0, 0};
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std::vector<double> color_scale = {0.4, 0.4, 0.4};
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// uint8_t color_scale2[] = {int(255 * 0.4), int(255 * 0.4), int(255 * 0.4)};
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// Draw lines
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float vscale = ((scale_max - scale_min) / scale_resolution);
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float step = size_y / scale_resolution;
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float value = scale_min;
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for (float i = size_y; i >= 0; i -= step)
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{
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ImVec2 pos0 = {0, i};
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ImVec2 pos1 = {(float)(size_x - 1), i};
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img.draw_line(pos0.x, pos0.y, pos1.x, pos1.y, color_scale);
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value += vscale;
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text_drawer.draw_text(img, pos0.x, pos0.y + 2, color_scale, 10, std::string(std::to_string(int(value)) + " dB").c_str());
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}
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#if 0
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// Draw Freq Scale
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if (enable_freq_scale && bandwidth != 0 && frequency != 0)
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{
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float y_level = size_x - 8;
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img.draw_line(inner_bb.Min.x, y_level, inner_bb.Max.x, y_level, color_cyan, 3);
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for (int i = 1; i < 10; i++)
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{
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float x_line = inner_bb.Min.x + (i / 10.0) * res_w;
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double freq_here = frequency + ((i / 10.0) * bandwidth) - (bandwidth / 2);
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img.draw_line(x_line, y_level, x_line, y_level - 10, color_cyan, 3);
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auto cstr = format_notated(freq_here);
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img.draw_text(x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 30,
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i == 5 ? color_scale2 : color_cyan, 10 cstr.c_str());
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if (i == 5 && actual_sdr_freq != -1)
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{
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auto cstr = "(" + format_notated(actual_sdr_freq) + ")";
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img.draw_text({x_line - ImGui::CalcTextSize(cstr.c_str()).x / 2, y_level - 16},
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i == 5 ? color_scale2 : color_cyan, 10,
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cstr.c_str());
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}
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}
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}
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#endif
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// Draw VFOs
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if (bandwidth != 0 && frequency != 0 && vfo_freqs.size() > 0)
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{
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// const ImU32 col_base_vfo = style::theme.red;
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for (auto vfo : vfo_freqs)
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{
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double vfreq = vfo.second - frequency;
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float y_level = size_y - 8 * ui_scale;
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float x_line = 0 + (((bandwidth / 2) + vfreq) / bandwidth) * res_w;
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// window->DrawList->AddLine({x_line, y_level}, {x_line, y_level - 10 * ui_scale}, col_base_vfo, 3);
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// window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line - 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
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// window->DrawList->AddLine({x_line, y_level - 10 * ui_scale}, {x_line + 5 * ui_scale, y_level - 20 * ui_scale}, col_base_vfo, 3);
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img.draw_line(x_line, y_level, x_line, y_level - 10, color_red);
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img.draw_line(x_line, y_level - 10, x_line - 5, y_level - 20, color_red);
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img.draw_line(x_line, y_level - 10, x_line + 5, y_level - 20, color_red);
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// if (sqrtf(powf(ImGui::GetMousePos().x - x_line, 2) + powf(ImGui::GetMousePos().y - y_level, 2)) < 40 * ui_scale)
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// window->DrawList->AddText({x_line - ImGui::CalcTextSize(vfo.first.c_str()).x / 2, y_level - 45 * ui_scale},
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// col_base_vfo,
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// vfo.first.c_str());
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}
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}
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// Draw lines
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double fz = (double)values_size / (double)res_w;
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for (int n = 0; n < res_w; n++)
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{
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const float t1 = t0 + t_step;
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// const int v1_idx = (int)(t0 * item_count + 0.5f);
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float ffpos = n * fz;
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if (ffpos >= values_size)
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ffpos = values_size - 1;
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float finals = -INFINITY;
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for (float v = ffpos; v < ffpos + fz; v += 1)
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if (finals < values[(int)floor(v)])
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finals = values[(int)floor(v)];
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const float v1 = finals; // values[v1_idx];
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const ImVec2 tp1 = ImVec2(t1, 1.0f - ImSaturate((v1 - scale_min) * inv_scale));
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ImVec2 pos0 = ImLerp({0, 0}, {(float)size_x, (float)size_y}, tp0);
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ImVec2 pos1 = ImLerp({0, 0}, {(float)size_x, (float)size_y}, tp1);
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img.draw_line(pos0.x, pos0.y, pos1.x, pos1.y, color_cyan);
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t0 = t1;
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tp0 = tp1;
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}
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work_mutex.unlock();
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return img;
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}
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}
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