illyum/DmxShow
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Added timeline (broke playback)

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This commit is contained in:
illyum 2024-08-08 23:24:29 -06:00
parent d71a584f19
commit 59c36bbd98
1 changed files with 54 additions and 40 deletions
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96
main.cpp
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@ -23,6 +23,9 @@ bool is_playing = false;
float playback_start_time = 0.0f; float playback_start_time = 0.0f;
float current_time = 0.0f; float current_time = 0.0f;
float timeline_duration = 10.0f; // 10 seconds by default float timeline_duration = 10.0f; // 10 seconds by default
float bpm = 120.0f; // Default BPM
float zoom_level = 1.0f; // Zoom level
float pan_offset = 0.0f; // Pan offset
const int num_channels = 512; const int num_channels = 512;
@ -178,7 +181,11 @@ void setupImGui(GLFWwindow* window) {
ImGui_ImplOpenGL3_Init("#version 130"); ImGui_ImplOpenGL3_Init("#version 130");
} }
void renderImGui() { void renderImGui() {
// Calculate time per beat based on BPM
float beat_interval = 60.0f / bpm;
// Temporary variables to hold the slider values // Temporary variables to hold the slider values
int channel1 = buffer[0]; int channel1 = buffer[0];
int channel2 = buffer[1]; int channel2 = buffer[1];
@ -197,18 +204,11 @@ void renderImGui() {
buffer[1] = static_cast<unsigned char>(channel2); buffer[1] = static_cast<unsigned char>(channel2);
buffer[2] = static_cast<unsigned char>(channel3); buffer[2] = static_cast<unsigned char>(channel3);
// Allow user to set the total duration of the timeline // Allow user to set the total duration of the timeline and BPM
ImGui::SliderFloat("Timeline Duration (seconds)", &timeline_duration, 1.0f, 300.0f); ImGui::SliderFloat("Timeline Duration (seconds)", &timeline_duration, 1.0f, 300.0f);
ImGui::SliderFloat("BPM", &bpm, 30.0f, 240.0f);
// Timeline UI with time scale // Play/Pause button
ImGui::Text("Timeline");
ImGui::SliderFloat("##Timeline", &timeline_position, 0.0f, timeline_duration, "%.2f sec");
if (ImGui::Button("Add Marker")) {
markers.emplace_back(timeline_position / timeline_duration, buffer[0], buffer[1], buffer[2]);
}
ImGui::SameLine();
if (ImGui::Button(is_playing ? "Pause" : "Play")) { if (ImGui::Button(is_playing ? "Pause" : "Play")) {
is_playing = !is_playing; is_playing = !is_playing;
if (is_playing) { if (is_playing) {
@ -216,43 +216,57 @@ void renderImGui() {
} }
} }
// Display markers with time indication // Time Slider (Timeline Position)
ImGui::SliderFloat("Timeline Position", &timeline_position, 0.0f, timeline_duration, "%.2f sec");
// Custom timeline rendering with grid lines
ImGui::Text("Timeline");
ImGui::PushID("CustomTimeline");
ImGui::BeginChild("##Timeline", ImVec2(ImGui::GetContentRegionAvail().x, 100), true);
// Draw grid lines for beats
ImDrawList* draw_list = ImGui::GetWindowDrawList();
ImVec2 cursor_pos = ImGui::GetCursorScreenPos();
float timeline_width = ImGui::GetContentRegionAvail().x;
for (int i = 0; i <= static_cast<int>(timeline_duration / beat_interval); ++i) {
float beat_position = i * beat_interval * zoom_level - pan_offset;
float x_position = cursor_pos.x + (beat_position / timeline_duration) * timeline_width;
if (x_position >= cursor_pos.x && x_position <= cursor_pos.x + timeline_width) {
// Draw major beat line
if (i % 4 == 0) {
draw_list->AddLine(ImVec2(x_position, cursor_pos.y), ImVec2(x_position, cursor_pos.y + 100), IM_COL32(255, 0, 0, 255), 2.0f);
}
else {
// Draw minor beat line
draw_list->AddLine(ImVec2(x_position, cursor_pos.y), ImVec2(x_position, cursor_pos.y + 100), IM_COL32(255, 255, 255, 255), 1.0f);
}
}
}
// Allow adding markers with snapping to grid
if (ImGui::Button("Add Marker")) {
float snap_position = std::round(timeline_position / beat_interval) * beat_interval;
markers.emplace_back(snap_position / timeline_duration, buffer[0], buffer[1], buffer[2]);
}
// Draw markers on the timeline
for (const auto& marker : markers) { for (const auto& marker : markers) {
float marker_position = std::get<0>(marker) * timeline_duration; float marker_position = std::get<0>(marker) * timeline_duration * zoom_level - pan_offset;
ImGui::Text("Marker at %.2f sec: R=%d, G=%d, B=%d", float x_position = cursor_pos.x + (marker_position / timeline_duration) * timeline_width;
marker_position,
std::get<1>(marker),
std::get<2>(marker),
std::get<3>(marker));
}
// Playback logic with time synchronization if (x_position >= cursor_pos.x && x_position <= cursor_pos.x + timeline_width) {
if (is_playing) { draw_list->AddRectFilled(ImVec2(x_position - 2.0f, cursor_pos.y), ImVec2(x_position + 2.0f, cursor_pos.y + 100), IM_COL32(0, 255, 0, 255));
current_time = static_cast<float>(glfwGetTime()) - playback_start_time;
for (const auto& marker : markers) {
float marker_position = std::get<0>(marker) * timeline_duration;
if (current_time >= marker_position) {
buffer[0] = std::get<1>(marker);
buffer[1] = std::get<2>(marker);
buffer[2] = std::get<3>(marker);
} }
} }
// Update the timeline slider position according to current playback time ImGui::EndChild();
timeline_position = current_time; ImGui::PopID();
if (timeline_position >= timeline_duration) {
is_playing = false; // Stop playback at the end
timeline_position = timeline_duration;
}
}
// Draw time scale // Place Zoom and Pan sliders below the timeline to avoid overlap
ImGui::Separator(); ImGui::SliderFloat("Zoom", &zoom_level, 0.1f, 10.0f);
ImGui::Text("Time Scale:"); ImGui::SliderFloat("Pan", &pan_offset, 0.0f, timeline_duration * zoom_level);
for (float t = 0.0f; t <= timeline_duration; t += timeline_duration / 10.0f) {
ImGui::SameLine();
ImGui::Text("%.1f sec", t);
}
ImGui::End(); ImGui::End();
} }