//// PlotPerf.qml// examples/utilities/render/plotperf//// Created by Sam Gateau on 3//2016// Copyright 2016 High Fidelity, Inc.//// Distributed under the Apache License, Version 2.0.// See the accompanying file LICENSE or https://www.apache.org/licenses/LICENSE-2.0.html//import QtQuick 2.5import QtQuick.Controls 1.4 Item { id: root width: parent.width height: 100 // The title of the graph property string title // The object used as the default source object for the prop plots property var object // Plots is an array of plot descriptor // a default plot descriptor expects the following object: // prop: [ { // object: {} // Optional: this is the object from which the prop will be fetched, // if nothing than the object from root is used // prop:"bufferCPUCount", // Needed the name of the property from the object to feed the plot // label: "CPU", // Optional: Label as displayed on the plot // color: "#00B4EF" // Optional: Color of the curve // unit: "km/h" // Optional: Unit added to the value displayed, if nothing then the default unit is used // scale: 1 // Optional: Extra scaling used to represent the value, this scale is combined with the global scale. // }, property var plots // Default value scale used to define the max value of the chart property var valueScale: 1 // Default value unit appended to the value displayed property var valueUnit: "" // Default number of digits displayed property var valueNumDigits: 0 property var valueMax : 1 property var _values : new Array() property var tick : 0 function createValues() { for (var i =0; i < plots.length; i++) { var plot = plots[i]; _values.push( { object: (plot["object"] !== undefined ? plot["object"] : root.object), value: plot["prop"], valueMax: 1, numSamplesConstantMax: 0, valueHistory: new Array(), label: (plot["label"] !== undefined ? plot["label"] : ""), color: (plot["color"] !== undefined ? plot["color"] : "white"), scale: (plot["scale"] !== undefined ? plot["scale"] : 1), unit: (plot["unit"] !== undefined ? plot["unit"] : valueUnit) }) } pullFreshValues(); } Component.onCompleted: { createValues(); } function pullFreshValues() { // Wait until values are created to begin pulling if (!_values) { return; } var VALUE_HISTORY_SIZE = 100; tick++; var currentValueMax = 0 for (var i = 0; i < _values.length; i++) { var currentVal = (+_values[i].object[_values[i].value]) * _values[i].scale; _values[i].valueHistory.push(currentVal) _values[i].numSamplesConstantMax++; if (_values[i].valueHistory.length > VALUE_HISTORY_SIZE) { var lostValue = _values[i].valueHistory.shift(); if (lostValue >= _values[i].valueMax) { _values[i].valueMax *= 0.99 _values[i].numSamplesConstantMax = 0 } } if (_values[i].valueMax < currentVal) { _values[i].valueMax = currentVal; _values[i].numSamplesConstantMax = 0 } if (_values[i].numSamplesConstantMax > VALUE_HISTORY_SIZE) { _values[i].numSamplesConstantMax = 0 _values[i].valueMax *= 0.95 // lower slowly the current max if no new above max since a while } if (currentValueMax < _values[i].valueMax) { currentValueMax = _values[i].valueMax } } if ((valueMax < currentValueMax) || (tick % VALUE_HISTORY_SIZE == 0)) { valueMax = currentValueMax; } mycanvas.requestPaint() } Timer { interval: 100; running: true; repeat: true onTriggered: pullFreshValues() } Canvas { id: mycanvas anchors.fill:parent onPaint: { var lineHeight = 12; function displayValue(val, unit) { return (val / root.valueScale).toFixed(root.valueNumDigits) + " " + unit } function pixelFromVal(val, valScale) { return lineHeight + (height - lineHeight) * (1 - (0.9) * val / valueMax); } function valueFromPixel(pixY) { return ((pixY - lineHeight) / (height - lineHeight) - 1) * valueMax / (-0.9); } function plotValueHistory(ctx, valHistory, color) { var widthStep= width / (valHistory.length - 1); ctx.beginPath(); ctx.strokeStyle= color; // Green path ctx.lineWidth="2"; ctx.moveTo(0, pixelFromVal(valHistory[0])); for (var i = 1; i < valHistory.length; i++) { ctx.lineTo(i * widthStep, pixelFromVal(valHistory[i])); } ctx.stroke(); } function displayValueLegend(ctx, val, num) { ctx.fillStyle = val.color; var bestValue = val.valueHistory[val.valueHistory.length -1]; ctx.textAlign = "right"; ctx.fillText(displayValue(bestValue, val.unit), width, (num + 2) * lineHeight * 1); ctx.textAlign = "left"; ctx.fillText(val.label, 0, (num + 2) * lineHeight * 1); } function displayTitle(ctx, text, maxVal) { ctx.fillStyle = "grey"; ctx.textAlign = "right"; ctx.fillText(displayValue(valueFromPixel(lineHeight), root.valueUnit), width, lineHeight); ctx.fillStyle = "white"; ctx.textAlign = "left"; ctx.fillText(text, 0, lineHeight); } function displayBackground(ctx) { ctx.fillStyle = Qt.rgba(0, 0, 0, 0.6); ctx.fillRect(0, 0, width, height); ctx.strokeStyle= "grey"; ctx.lineWidth="2"; ctx.beginPath(); ctx.moveTo(0, lineHeight + 1); ctx.lineTo(width, lineHeight + 1); ctx.moveTo(0, height); ctx.lineTo(width, height); ctx.stroke(); } var ctx = getContext("2d"); ctx.clearRect(0, 0, width, height); ctx.font="12px Verdana"; displayBackground(ctx); for (var i = 0; i < _values.length; i++) { plotValueHistory(ctx, _values[i].valueHistory, _values[i].color) displayValueLegend(ctx, _values[i], i) } displayTitle(ctx, title, valueMax) } }}
//
// PlotPerf.qml
// examples/utilities/render/plotperf
//
// Created by Sam Gateau on 3//2016
// Copyright 2016 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or https://www.apache.org/licenses/LICENSE-2.0.html
//
import QtQuick 2.5
import QtQuick.Controls 1.4
Item {
id: root
width: parent.width
height: 100
// The title of the graph
property string title
// The object used as the default source object for the prop plots
property var object
// Plots is an array of plot descriptor
// a default plot descriptor expects the following object:
// prop: [ {
// object: {} // Optional: this is the object from which the prop will be fetched,
// if nothing than the object from root is used
// prop:"bufferCPUCount", // Needed the name of the property from the object to feed the plot
// label: "CPU", // Optional: Label as displayed on the plot
// color: "#00B4EF" // Optional: Color of the curve
// unit: "km/h" // Optional: Unit added to the value displayed, if nothing then the default unit is used
// scale: 1 // Optional: Extra scaling used to represent the value, this scale is combined with the global scale.
// },
property var plots
// Default value scale used to define the max value of the chart
property var valueScale: 1
// Default value unit appended to the value displayed
property var valueUnit: ""
// Default number of digits displayed
property var valueNumDigits: 0
property var valueMax : 1
property var _values : new Array()
property var tick : 0
function createValues() {
for (var i =0; i < plots.length; i++) {
var plot = plots[i];
_values.push( {
object: (plot["object"] !== undefined ? plot["object"] : root.object),
value: plot["prop"],
valueMax: 1,
numSamplesConstantMax: 0,
valueHistory: new Array(),
label: (plot["label"] !== undefined ? plot["label"] : ""),
color: (plot["color"] !== undefined ? plot["color"] : "white"),
scale: (plot["scale"] !== undefined ? plot["scale"] : 1),
unit: (plot["unit"] !== undefined ? plot["unit"] : valueUnit)
})
}
pullFreshValues();
}
Component.onCompleted: {
createValues();
}
function pullFreshValues() {
// Wait until values are created to begin pulling
if (!_values) { return; }
var VALUE_HISTORY_SIZE = 100;
tick++;
var currentValueMax = 0
for (var i = 0; i < _values.length; i++) {
var currentVal = (+_values[i].object[_values[i].value]) * _values[i].scale;
_values[i].valueHistory.push(currentVal)
_values[i].numSamplesConstantMax++;
if (_values[i].valueHistory.length > VALUE_HISTORY_SIZE) {
var lostValue = _values[i].valueHistory.shift();
if (lostValue >= _values[i].valueMax) {
_values[i].valueMax *= 0.99
_values[i].numSamplesConstantMax = 0
}
}
if (_values[i].valueMax < currentVal) {
_values[i].valueMax = currentVal;
_values[i].numSamplesConstantMax = 0
}
if (_values[i].numSamplesConstantMax > VALUE_HISTORY_SIZE) {
_values[i].numSamplesConstantMax = 0
_values[i].valueMax *= 0.95 // lower slowly the current max if no new above max since a while
}
if (currentValueMax < _values[i].valueMax) {
currentValueMax = _values[i].valueMax
}
}
if ((valueMax < currentValueMax) || (tick % VALUE_HISTORY_SIZE == 0)) {
valueMax = currentValueMax;
}
mycanvas.requestPaint()
}
Timer {
interval: 100; running: true; repeat: true
onTriggered: pullFreshValues()
}
Canvas {
id: mycanvas
anchors.fill:parent
onPaint: {
var lineHeight = 12;
function displayValue(val, unit) {
return (val / root.valueScale).toFixed(root.valueNumDigits) + " " + unit
}
function pixelFromVal(val, valScale) {
return lineHeight + (height - lineHeight) * (1 - (0.9) * val / valueMax);
}
function valueFromPixel(pixY) {
return ((pixY - lineHeight) / (height - lineHeight) - 1) * valueMax / (-0.9);
}
function plotValueHistory(ctx, valHistory, color) {
var widthStep= width / (valHistory.length - 1);
ctx.beginPath();
ctx.strokeStyle= color; // Green path
ctx.lineWidth="2";
ctx.moveTo(0, pixelFromVal(valHistory[0]));
for (var i = 1; i < valHistory.length; i++) {
ctx.lineTo(i * widthStep, pixelFromVal(valHistory[i]));
}
ctx.stroke();
}
function displayValueLegend(ctx, val, num) {
ctx.fillStyle = val.color;
var bestValue = val.valueHistory[val.valueHistory.length -1];
ctx.textAlign = "right";
ctx.fillText(displayValue(bestValue, val.unit), width, (num + 2) * lineHeight * 1);
ctx.textAlign = "left";
ctx.fillText(val.label, 0, (num + 2) * lineHeight * 1);
}
function displayTitle(ctx, text, maxVal) {
ctx.fillStyle = "grey";
ctx.textAlign = "right";
ctx.fillText(displayValue(valueFromPixel(lineHeight), root.valueUnit), width, lineHeight);
ctx.fillStyle = "white";
ctx.textAlign = "left";
ctx.fillText(text, 0, lineHeight);
}
function displayBackground(ctx) {
ctx.fillStyle = Qt.rgba(0, 0, 0, 0.6);
ctx.fillRect(0, 0, width, height);
ctx.strokeStyle= "grey";
ctx.lineWidth="2";
ctx.beginPath();
ctx.moveTo(0, lineHeight + 1);
ctx.lineTo(width, lineHeight + 1);
ctx.moveTo(0, height);
ctx.lineTo(width, height);
ctx.stroke();
}
var ctx = getContext("2d");
ctx.clearRect(0, 0, width, height);
ctx.font="12px Verdana";
displayBackground(ctx);
for (var i = 0; i < _values.length; i++) {
plotValueHistory(ctx, _values[i].valueHistory, _values[i].color)
displayValueLegend(ctx, _values[i], i)
}
displayTitle(ctx, title, valueMax)
}
}
}