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LogWindow.cs
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LogWindow.cs
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// SPDX-License-Identifier: MIT
// The authors below grant copyright rights under the MIT license:
// Copyright (c) 2023 Nick Klingensmith
// Copyright (c) 2023 Qualcomm Technologies, Inc.
using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace StereoKit.Framework
{
public class LogWindow : IStepper
{
struct LogItem
{
public LogLevel level;
public string text;
public int count;
}
public bool Enabled { get; set; } = true;
public Pose pose = Pose.Identity;
TextStyle styleDiag;
TextStyle styleInfo;
TextStyle styleWarn;
TextStyle styleErr;
TextStyle styleGraph;
List<LogItem> items = new List<LogItem>();
static float logIndex = 0;
DiagGraph fpsGraph = new DiagGraph(5f, 32f);
DiagGraph ramGraph = new DiagGraph(0, 0);
DiagGraph managedRamGraph = new DiagGraph(0, 0);
ulong lastMemPoll = 0;
public LogWindow()
=> Log.Subscribe(OnLog);
public bool Initialize()
{
styleDiag = TextStyle.FromFont(Font.Default, 0.008f, Color.HSV(1, 0, 0.7f));
styleInfo = TextStyle.FromFont(Font.Default, 0.008f, Color.HSV(1, 0, 1));
styleWarn = TextStyle.FromFont(Font.Default, 0.008f, Color.HSV(0.17f, 0.7f, 1));
styleErr = TextStyle.FromFont(Font.Default, 0.008f, Color.HSV(1, 0.7f, 1));
styleGraph = TextStyle.FromFont(Font.Default, 1, Color.HSV(1, 0, 1));
Vec3 initialVec3 = Vec3.Forward * 50 * U.cm - Vec3.Right * 55 * U.cm;
pose = new(initialVec3, Quat.LookAt(initialVec3, Input.Head.position));
return true;
}
public void Shutdown()
=> Log.Unsubscribe(OnLog);
void OnLog(LogLevel level, string logText)
{
if (level == LogLevel.Error)
level = LogLevel.Error;
if (items.Count > 0 && items[items.Count - 1].text == logText)
{
LogItem item = items[items.Count - 1];
item.count++;
items[items.Count - 1] = item;
return;
}
items.Add(new LogItem { level = level, text = logText, count = 1 });
if (logIndex != 0) logIndex += 1;
}
public void Step()
{
if (!Enabled) return;
UI.WindowBegin("Log", ref pose, new Vec2(40, 0) * U.cm);
DrawLogs();
UI.HSeparator();
DrawGraphs();
UI.WindowEnd();
}
void DrawLogs()
{
Vec2 textSize = V.XY(UI.LayoutRemaining.x, 0.024f);
const int count = 10;
UI.LayoutPushCut(UICut.Top, textSize.y * count);
UI.LayoutPushCut(UICut.Right, UI.LineHeight * 0.6f);
if (UI.VSlider("scroll", ref logIndex, 0, Math.Max(items.Count - 3, 0), 1))
logIndex = Math.Max(Math.Min((int)logIndex, items.Count - 1), 0);
UI.LayoutPop();
Vec3 start = UI.LayoutAt;
UI.LayoutReserve(V.XY(textSize.x, textSize.y * count));
int index = (int)logIndex;
for (int i = index; i < index + count && i < items.Count; i++)
{
LogItem item = items[(items.Count - 1) - i];
TextStyle ts = item.level switch
{
LogLevel.Error => styleErr,
LogLevel.Warning => styleWarn,
LogLevel.Info => styleInfo,
LogLevel.Diagnostic => styleDiag,
_ => styleInfo,
};
float y = (i - index) * -textSize.y;
Text.Add(item.text, Matrix.T(start + new Vec3(0, y, -.004f)), textSize, TextFit.Clip | TextFit.Wrap, ts, TextAlign.TopLeft, TextAlign.CenterLeft);
if (item.count > 1)
{
Vec3 at = V.XYZ(start.x - textSize.x, start.y + y, start.z - 0.014f);
Text.Add(item.count.ToString(), Matrix.T(at), V.XY(textSize.y, textSize.y), TextFit.Clip, styleInfo, TextAlign.TopRight, TextAlign.Center);
}
}
UI.LayoutPop();
}
void DrawGraphs()
{
#if !WINDOWS_UWP
ulong memPollIdx = (ulong)(Time.Total * 2);
if (lastMemPoll != memPollIdx)
{
lastMemPoll = memPollIdx;
using (Process process = Process.GetCurrentProcess())
{
long managedMem = GC.GetTotalMemory(false);
long workingMem = process.WorkingSet64;
ramGraph .Add(workingMem / (1024.0f * 1024.0f));
managedRamGraph.Add(managedMem / (1024.0f * 1024.0f));
}
}
#endif
float thirdWidth = (UI.LayoutRemaining.x - UI.Settings.gutter * 2) / 3.0f;
Vec2 graphSize = V.XY(thirdWidth, UI.LineHeight);
fpsGraph.Add(Time.Stepf * 1000);
fpsGraph.Draw(styleGraph, "Frame (ms)", UI.LayoutAt + V.XYZ(0, 0, -0.004f), graphSize);
UI.LayoutReserve(graphSize);
UI.SameLine();
managedRamGraph.Draw(styleGraph, "Managed (mb)", UI.LayoutAt + V.XYZ(0, 0, -0.004f), graphSize);
UI.LayoutReserve(graphSize);
UI.SameLine();
ramGraph.Draw(styleGraph, "Total (mb)", UI.LayoutAt + V.XYZ(0, 0, -0.004f), graphSize);
UI.LayoutReserve(graphSize);
}
struct DiagGraph
{
float[] buffer;
LinePoint[] points;
int curr;
float min;
float max;
bool calcMin;
bool calcMax;
public DiagGraph(float min, float max)
{
this.min = min;
this.max = max;
calcMin = min == 0;
calcMax = max == 0;
curr = 0;
buffer = new float[100];
points = new LinePoint[100];
for (int i = 0; i < points.Length; i++)
{
points[i].color = new Color32(255, 255, 255, 100);
points[i].thickness = 0.001f;
}
}
public void Add(float value)
{
buffer[curr] = value;
curr = (curr + 1) % buffer.Length;
}
public void Draw(TextStyle style, string label, Vec3 at, Vec2 size)
{
const float labelWidth = 0.01f;
float textScale = size.y * 0.15f;
size.x -= labelWidth;
float frameMax = float.MinValue;
float frameMin = float.MaxValue;
float step = 1f / (points.Length - 1);
for (int i = 0; i < points.Length; i++)
{
float pct = i * step;
int idx = (curr + i) % points.Length;
float val = Math.Clamp((buffer[idx] - min) / (max - min), 0.0f, 1.0f);
points[i].pt = new Vec3(at.x - pct * size.x, at.y - size.y + val * size.y, at.z);
if (buffer[idx] > frameMax) frameMax = buffer[idx];
if (buffer[idx] < frameMin) frameMin = buffer[idx];
}
Lines.Add(points);
Text.Add(((int)max).ToString(), Matrix.TS(at.x - size.x, at.y, at.z, textScale), V.XY(labelWidth * textScale, 1), TextFit.Overflow, style, TextAlign.TopLeft, TextAlign.TopLeft);
Text.Add(((int)min).ToString(), Matrix.TS(at.x - size.x, at.y - size.y, at.z, textScale), V.XY(labelWidth * textScale, 1), TextFit.Overflow, style, TextAlign.BottomLeft, TextAlign.BottomLeft);
Text.Add(label, Matrix.TS(at.x, at.y, at.z, textScale), style, TextAlign.TopLeft, TextAlign.TopLeft);
Lines.Add(at + V.XY0(-Text.Size(label, style).x * textScale - 0.002f, 0), at + V.XY0(-size.x, 0), new Color32(255, 255, 255, 20), 0.001f);
Lines.Add(at + V.XY0(0, -size.y), at + V.XY0(-size.x, -size.y), new Color32(255, 255, 255, 20), 0.001f);
if (calcMin) min = frameMin;
if (calcMax) max = frameMax;
}
}
}
}