305 lines
9.2 KiB
C++
Executable File
305 lines
9.2 KiB
C++
Executable File
#include <iostream>
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// Local-Hyperion includes
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#include "LedDevicePhilipsHue.h"
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// jsoncpp includes
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#include <json/json.h>
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// qt includes
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#include <QtCore/qmath.h>
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#include <QUrl>
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#include <QHttpRequestHeader>
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#include <QEventLoop>
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LedDevicePhilipsHue::LedDevicePhilipsHue(const std::string &output) :
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host(output.c_str()), username("newdeveloper") {
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http = new QHttp(host);
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timer.setInterval(3000);
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timer.setSingleShot(true);
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connect(&timer, SIGNAL(timeout()), this, SLOT(restoreStates()));
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}
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LedDevicePhilipsHue::~LedDevicePhilipsHue() {
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delete http;
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}
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int LedDevicePhilipsHue::write(const std::vector<ColorRgb> & ledValues) {
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// Save light states if not done before.
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if (!statesSaved())
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saveStates(ledValues.size());
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// Iterate through colors and set light states.
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unsigned int lightId = 0;
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for (const ColorRgb &color : ledValues) {
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lightId++;
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// Send only request to the brigde if color changed (prevents DDOS --> 503)
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if (!oldLedValues.empty())
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if(!hasColorChanged(lightId, &color))
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continue;
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float r = color.red / 255.0f;
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float g = color.green / 255.0f;
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float b = color.blue / 255.0f;
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//set color gamut triangle
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if(std::find(hueBulbs.begin(), hueBulbs.end(), modelIds[(lightId - 1)]) != hueBulbs.end()) {
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Red = {0.675f, 0.322f};
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Green = {0.4091f, 0.518f};
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Blue = {0.167f, 0.04f};
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} else if (std::find(livingColors.begin(),
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livingColors.end(), modelIds[(lightId - 1)]) != livingColors.end()) {
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Red = {0.703f, 0.296f};
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Green = {0.214f, 0.709f};
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Blue = {0.139f, 0.081f};
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} else {
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Red = {1.0f, 0.0f};
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Green = {0.0f, 1.0f};
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Blue = {0.0f, 0.0f};
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}
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// if color equal black, switch off lamp ...
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if (r == 0.0f && g == 0.0f && b == 0.0f) {
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switchLampOff(lightId);
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continue;
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}
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// ... and if lamp off, switch on
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if (!checkOnStatus(states[(lightId - 1)]))
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switchLampOn(lightId);
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float bri;
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CGPoint p = {0.0f, 0.0f};
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// Scale colors from [0, 255] to [0, 1] and convert to xy space.
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rgbToXYBrightness(r, g, b, p, bri);
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// Send adjust color and brightness command in JSON format.
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put(getStateRoute(lightId),
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QString("{\"xy\": [%1, %2], \"bri\": %3}").arg(p.x).arg(p.y).arg(qRound(b * 255.0f)));
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}
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oldLedValues = ledValues;
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timer.start();
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return 0;
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}
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bool LedDevicePhilipsHue::hasColorChanged(unsigned int lightId, const ColorRgb *color) {
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bool matchFound = true;
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const ColorRgb &tmpOldColor = oldLedValues[(lightId - 1)];
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if ((*color).red == tmpOldColor.red)
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matchFound = false;
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if (!matchFound && (*color).green == tmpOldColor.green)
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matchFound = false;
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else
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matchFound = true;
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if (!matchFound && (*color).blue == tmpOldColor.blue)
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matchFound = false;
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else
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matchFound = true;
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return matchFound;
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}
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int LedDevicePhilipsHue::switchOff() {
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timer.stop();
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// If light states have been saved before, ...
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if (statesSaved()) {
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// ... restore them.
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restoreStates();
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}
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return 0;
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}
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bool LedDevicePhilipsHue::checkOnStatus(QString status) {
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return status.contains("\"on\":true");
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}
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void LedDevicePhilipsHue::put(QString route, QString content) {
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QString url = QString("/api/%1/%2").arg(username).arg(route);
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QHttpRequestHeader header("PUT", url);
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header.setValue("Host", host);
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header.setValue("Accept-Encoding", "identity");
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header.setValue("Connection", "keep-alive");
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header.setValue("Content-Length", QString("%1").arg(content.size()));
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QEventLoop loop;
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// Connect requestFinished signal to quit slot of the loop.
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loop.connect(http, SIGNAL(requestFinished(int, bool)), SLOT(quit()));
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// Perfrom request
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http->request(header, content.toAscii());
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// Go into the loop until the request is finished.
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loop.exec();
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}
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QByteArray LedDevicePhilipsHue::get(QString route) {
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QString url = QString("/api/%1/%2").arg(username).arg(route);
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// Event loop to block until request finished.
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QEventLoop loop;
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// Connect requestFinished signal to quit slot of the loop.
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loop.connect(http, SIGNAL(requestFinished(int, bool)), SLOT(quit()));
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// Perfrom request
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http->get(url);
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// Go into the loop until the request is finished.
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loop.exec();
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// Read all data of the response.
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return http->readAll();
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}
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QString LedDevicePhilipsHue::getStateRoute(unsigned int lightId) {
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return QString("lights/%1/state").arg(lightId);
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}
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QString LedDevicePhilipsHue::getRoute(unsigned int lightId) {
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return QString("lights/%1").arg(lightId);
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}
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void LedDevicePhilipsHue::saveStates(unsigned int nLights) {
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// Clear saved light states.
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states.clear();
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modelIds.clear();
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// Use json parser to parse reponse.
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Json::Reader reader;
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Json::FastWriter writer;
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// Iterate lights.
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for (unsigned int i = 0; i < nLights; i++) {
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// Read the response.
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QByteArray response = get(getRoute(i + 1));
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// Parse JSON.
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Json::Value json;
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if (!reader.parse(QString(response).toStdString(), json)) {
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// Error occured, break loop.
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break;
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}
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// Save state object values which are subject to change.
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Json::Value state(Json::objectValue);
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state["on"] = json["state"]["on"];
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if (json["state"]["on"] == true) {
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state["xy"] = json["state"]["xy"];
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state["bri"] = json["state"]["bri"];
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}
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// Save state object.
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modelIds.push_back(QString(writer.write(json["modelid"]).c_str()).trimmed().replace("\"", ""));
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states.push_back(QString(writer.write(state).c_str()).trimmed());
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}
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}
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void LedDevicePhilipsHue::switchLampOn(unsigned int lightId) {
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put(getStateRoute(lightId), "{\"on\": true}");
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states[(lightId - 1)].replace("\"on\":false", "\"on\":true");
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}
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void LedDevicePhilipsHue::switchLampOff(unsigned int lightId) {
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put(getStateRoute(lightId), "{\"on\": false}");
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states[(lightId - 1)].replace("\"on\":true", "\"on\":false");
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}
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void LedDevicePhilipsHue::restoreStates() {
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unsigned int lightId = 1;
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for (QString state : states) {
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put(getStateRoute(lightId), state);
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lightId++;
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}
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// Clear saved light states.
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states.clear();
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modelIds.clear();
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oldLedValues.clear();
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}
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bool LedDevicePhilipsHue::statesSaved() {
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return !states.empty();
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}
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float LedDevicePhilipsHue::CrossProduct(CGPoint& p1, CGPoint& p2) {
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return (p1.x * p2.y - p1.y * p2.x);
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}
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bool LedDevicePhilipsHue::CheckPointInLampsReach(CGPoint& p) {
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CGPoint v1 = {Green.x - Red.x, Green.y - Red.y};
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CGPoint v2 = {Blue.x - Red.x, Blue.y - Red.y};
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CGPoint q = {p.x - Red.x, p.y - Red.y};
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float s = CrossProduct(q, v2) / CrossProduct(v1, v2);
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float t = CrossProduct(v1, q) / CrossProduct(v1, v2);
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if ((s >= 0.0f) && (t >= 0.0f) && (s + t <= 1.0f))
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return true;
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else
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return false;
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}
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CGPoint LedDevicePhilipsHue::GetClosestPointToPoint(CGPoint& A, CGPoint& B, CGPoint& P) {
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CGPoint AP = {P.x - A.x, P.y - A.y};
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CGPoint AB = {B.x - A.x, B.y - A.y};
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float ab2 = AB.x * AB.x + AB.y * AB.y;
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float ap_ab = AP.x * AB.x + AP.y * AB.y;
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float t = ap_ab / ab2;
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if (t < 0.0f)
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t = 0.0f;
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else if (t > 1.0f)
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t = 1.0f;
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return {A.x + AB.x * t, A.y + AB.y * t};
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}
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float LedDevicePhilipsHue::GetDistanceBetweenTwoPoints(CGPoint& one, CGPoint& two) {
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float dx = one.x - two.x; // horizontal difference
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float dy = one.y - two.y; // vertical difference
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float dist = sqrt(dx * dx + dy * dy);
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return dist;
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}
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void LedDevicePhilipsHue::rgbToXYBrightness(float red, float green, float blue, CGPoint& xyPoint, float& brightness) {
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//Apply gamma correction.
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float r = (red > 0.04045f) ? powf((red + 0.055f) / (1.0f + 0.055f), 2.4f) : (red / 12.92f);
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float g = (green > 0.04045f) ? powf((green + 0.055f) / (1.0f + 0.055f), 2.4f) : (green / 12.92f);
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float b = (blue > 0.04045f) ? powf((blue + 0.055f) / (1.0f + 0.055f), 2.4f) : (blue / 12.92f);
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//Convert to XYZ space.
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float X = r * 0.649926f + g * 0.103455f + b * 0.197109f;
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float Y = r * 0.234327f + g * 0.743075f + b * 0.022598f;
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float Z = r * 0.0000000f + g * 0.053077f + b * 1.035763f;
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//Convert to x,y space.
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float cx = X / (X + Y + Z + 0.0000001f);
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float cy = Y / (X + Y + Z + 0.0000001f);
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if (isnan(cx))
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cx = 0.0f;
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if (isnan(cy))
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cy = 0.0f;
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xyPoint.x = cx;
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xyPoint.y = cy;
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//Check if the given XY value is within the colourreach of our lamps.
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bool inReachOfLamps = CheckPointInLampsReach(xyPoint);
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if (!inReachOfLamps) {
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//It seems the colour is out of reach
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//let's find the closes colour we can produce with our lamp and send this XY value out.
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//Find the closest point on each line in the triangle.
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CGPoint pAB = GetClosestPointToPoint(Red, Green, xyPoint);
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CGPoint pAC = GetClosestPointToPoint(Blue, Red, xyPoint);
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CGPoint pBC = GetClosestPointToPoint(Green, Blue, xyPoint);
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//Get the distances per point and see which point is closer to our Point.
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float dAB = GetDistanceBetweenTwoPoints(xyPoint, pAB);
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float dAC = GetDistanceBetweenTwoPoints(xyPoint, pAC);
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float dBC = GetDistanceBetweenTwoPoints(xyPoint, pBC);
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float lowest = dAB;
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CGPoint closestPoint = pAB;
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if (dAC < lowest) {
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lowest = dAC;
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closestPoint = pAC;
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}
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if (dBC < lowest) {
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lowest = dBC;
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closestPoint = pBC;
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}
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//Change the xy value to a value which is within the reach of the lamp.
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xyPoint.x = closestPoint.x;
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xyPoint.y = closestPoint.y;
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}
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// Brightness is simply Y in the XYZ space.
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brightness = Y;
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}
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