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rt_viewer.js
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rt_viewer.js
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// ==============================================
// Safecast Real-Time Sensor Viewer
// ==============================================
// Nick Dolezal/Safecast, 2015
// This code is released into the public domain.
// ==============================================
// =================================
// Requirements (Files):
// =================================
// 1. rt_viewer_min.js (this file)
// =================================
// Use
// =================================
//
// 1. Prerequisites
// -------------------------------
// var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions); // or whatever.
//
// 2. Instantiate
// -------------------------------
// var rtvm = new RTVM(map, null);
//
// Instantiate will auto-initialize and start polling.
// RT Viewer - Main
// Contains all useful instances of other objects and UI event handling.
// Messy and too broad but hey.
// NOTE: In most cases, null should be passed for "dataBinds".
// Only override this if you want to set custom styles or image/worker filepaths.
var RTVM = (function()
{
function RTVM(map, dataBinds, rtType)
{
this.mapRef = map;
this.isMobile = _IsPlatformMobile();
this.mks = null; // marker manager
this.failures = 0;
this.fail_max = (86400 * 365) / 600;
this.last_tx = 0;
this.enabled = true;
this.rt_type = rtType == null ? RTVM.RtType.SafecastRad : rtType;
this.dataBinds = dataBinds;
if (this.dataBinds == null)
{
this.Init_DataBindDefaults();
}//if
this.Init();
}
// =======================================================================================================
// Mandatory Initialization
// =======================================================================================================
RTVM.prototype.Init = function()
{
this.Init_MKS();
this.InitMarkersAsync();
this.InitConnectionWatchdog();
};
RTVM.prototype.Init_DataBindDefaults = function()
{
var binds =
{
cssClasses:
{
FuturaFont:"FuturaFont"
}
};
this.dataBinds = binds;
};
RTVM.prototype.Init_MKS = function()
{
var rs = this.rt_type == RTVM.RtType.SafecastRad ? RTICO.RenderStyle.Dot
: RTICO.RenderStyle.Chevron;
//rs = RTICO.RenderStyle.DoubleTriangle;
var pf = this.rt_type == RTVM.RtType.SafecastRad ? RTMKS.ParseFormat.SafecastRtRad
: RTMKS.ParseFormat.SafecastRtAir;
this.mks = new RTMKS(this.mapRef, window.devicePixelRatio, this.isMobile, this.dataBinds.cssClasses.FuturaFont, pf, rs);
};
RTVM.prototype.InitMarkersAsync = function()
{
// 2019-02-08 ND: FIx for no CORS upon HTTP->HTTPS redirect on the server. Always access via HTTPS now.
var pre = "https://";
var url = this.rt_type == RTVM.RtType.SafecastRad ? pre + "realtime.safecast.org/wp-content/uploads/devices.json"
: pre + "realtime.safecast.org/wp-content/uploads/devices.json";
this.GetJSONAsync(url);
};
RTVM.prototype.InitConnectionWatchdog = function()
{
setTimeout(function() {
this.ConnectionWatchdog();
}.bind(this), 10 * 60 * 1000);
};
// =======================================================================================================
// Event handlers - abstracted download methods
// =======================================================================================================
// Some network failures that break the auto-refresh do not appear to raise an event,
// so this serves as a failsafe for those cases.
//
RTVM.prototype.ConnectionWatchdog = function()
{
if (Date.now() - this.last_tx > 20 * 60 * 1000)
{
console.log("RTVM.prototype.ConnectionWatchdog: >20 mins since last connection attempt, restarting connection...");
this.InitMarkersAsync();
}//if
setTimeout(function() {
this.ConnectionWatchdog();
}.bind(this), 10 * 60 * 1000);
};
RTVM.prototype.GetJSONAsync = function(url)
{
// 2016-08-14 ND: Fix for not being able to disable via UI due to timer polling.
// This keeps timers running, but simply does a no-op.
if (!this.enabled)
{
setTimeout(function() {
this.last_tx = Date.now();
this.GetJSONAsync(url);
}.bind(this), 1 * 1000);
return;
}//if
var ss_now = "" + (parseInt(Date.now() * 0.001));
var url_nocache = url + "?t=" + ss_now;
var cb = function(response, userData)
{
var success = response != null && response.length > 0;
if (success)
{
var obj = null;
try
{
obj = JSON.parse(response);
}
catch (err)
{
console.log("RTVM: JSON parsing exception.");
}
if (obj != null)
{
// 2016-08-14 ND: Recheck enabled status due to HTTP GET latency, to make sure
// markers are not being added against user's preference.
if (this.enabled)
{
this.mks.AddSensorDataFromJson(obj);
this.mks.AddMarkersToMap();
}//if
}//if
else
{
success = false;
this.failures = this.failures + 1;
}//else
}//if
else
{
this.failures = this.failures + 1;
}//else
if (!success)
{
console.log("RTVM: Error getting sensors from URL: %s", url);
}//if
var after_ms = (success ? 60 : 600) * 1000; // 1 min normally, 10 mins on failure
if (this.failures < this.fail_max)
{
setTimeout(function() {
this.last_tx = Date.now();
this.GetJSONAsync(url);
}.bind(this), after_ms);
}//if
}.bind(this);
_GetAsync_HTTP(url_nocache, null, null, cb, null);
};
// =======================================================================================================
// Event handlers - UI
// =======================================================================================================
RTVM.prototype.ClearGmapsListeners = function()
{
this.mks.ClearGmapsListeners();
};
RTVM.prototype.AddGmapsListeners = function()
{
this.mks.AddGmapsListeners(); // only needed if they are manually removed.
};
RTVM.prototype.RemoveAllMarkersFromMapAndPurgeData = function()
{
this.mks.RemoveAllMarkersFromMapAndPurgeData();
};
RTVM.prototype.GetMarkerCount = function()
{
return this.mks == null || this.mks.vals == null ? 0 : this.mks.vals.length;
};
RTVM.prototype.GetEnabled = function()
{
return this.enabled;
};
RTVM.prototype.SetEnabled = function(v)
{
this.enabled = v;
};
// =======================================================================================================
// Static/Class Methods
// =======================================================================================================
var _GetAsync_HTTP = function(url, responseType, responseHeader, fxCallback, userData)
{
var req = new XMLHttpRequest();
req.open("GET", url, true);
if (responseType != null)
{
if (responseType == "text\/plain; charset=x-user-defined")
{
req.overrideMimeType(responseType);
}//if
else
{
req.responseType = responseType; //"arraybuffer", "blob", "document", "json", and "text"
}//else
}//if
req.onreadystatechange = function () // why was this ==== ?
{
if (req.readyState === 4 && req.status == 200 && req.response != null)
{
if (responseHeader != null)
{
fxCallback(req.getResponseHeader(responseHeader), userData);
}//if
else
{
fxCallback(req.response, userData);
}//else
}//if
else if (req.readyState === 4)
{
// This attemps to trap Chrome's ERR_NETWORK_CHANGED
// and other network failures which cause the updates to stop.
console.log("RTVM _GetAsync_HTTP: req.readyState == 4, req.status == %d. Retrying.", req.status);
fxCallback(null, userData);
}//else if
};
req.send(null);
};
// returns value of querystring parameter "name"
var _GetParam = function(name)
{
name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regexS = "[\\?&]" + name + "=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec(window.location.href);
return results == null ? "" : results[1];
};
// http://stackoverflow.com/questions/11381673/detecting-a-mobile-browser
// returns true if useragent is detected as being a mobile platform, or "mobile=1" is set in querystring.
var _IsPlatformMobile = function()
{
var check = false;
var ovr_str = _GetParam("mobile");
if (ovr_str != null && ovr_str.length > 0)
{
check = parseInt(ovr_str) == 1;
}//if
else
{
(function(a,b){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte|android|ipad|playbook|silk\-/i.test(a.substr(0,4)))check = true})(navigator.userAgent||navigator.vendor||window.opera);
if (!check) check = navigator.userAgent.match(/iPad/i);
if (!check) check = navigator.userAgent.match(/Android/i);
if (!check) check = navigator.userAgent.indexOf("iPad") > 0;
if (!check) check = navigator.userAgent.indexOf("Android") > 0;
}//else
return check;
};
RTVM.RtType =
{
SafecastRad: 0,
SafecastAir: 1
};
return RTVM;
})();
// RTLUT: contains color lookup table and returns RGB colors for a numeric value.
var RTLUT = (function()
{
function RTLUT(min, max, lut_id, scale_type_id)
{
this.min = min;
this.max = max;
this.lut_id = lut_id != null ? lut_id : 30;
this.scale_type_id = scale_type_id != null ? scale_type_id : 0;
var rgb = _GetRGBsForTableID(this.lut_id);
this.r = rgb.r;
this.g = rgb.g;
this.b = rgb.b;
this.n = this.r.length;
this.rdiff = 1.0 / (this.max - this.min);
this.nsb1 = parseFloat(this.n - 1.0);
}//LUT
RTLUT.prototype.GetRgbForIdx = function(i)
{
return [this.r[i], this.g[i], this.b[i]];
};
var _ScaleNormValueLOG10 = function(x) // y-you're going to inline this, right senpai VM?
{
x = Math.log(x * 9.0 + 1.0) * 0.43429448190325176;
x = Math.log(x * 9.0 + 1.0) * 0.43429448190325176;
x = Math.log(x * 9.0 + 1.0) * 0.43429448190325176;
x = Math.log(x * 9.0 + 1.0) * 0.43429448190325176;
return x;
};
var _ScaleNormValueLN = function(x)
{
x = Math.log(x * 1.718281828459045 + 1.0);
x = Math.log(x * 1.718281828459045 + 1.0);
x = Math.log(x * 1.718281828459045 + 1.0);
return x;
};
var _ScaleNormValueNasaPm25 = function(x)
{
// https://upload.wikimedia.org/wikipedia/commons/4/4f/483897main_Global-PM2.5-map.JPG
if (x > 0.25) x = 0.25 + (x - 0.25) * 0.16666667; // [0...1] -> [0...0.375]
x *= 2.66666667; // [0...0.375] -> [0...1]
return x;
};
RTLUT.prototype.GetIdxForValue = function(x, rsn)
{
x = (x - this.min) * this.rdiff;
if (x > 1.0) x = 1.0; else if (x < 0.0) x = 0.0;
switch (this.scale_type_id)
{
case RTLUT.ScaleType.LOG10:
x = _ScaleNormValueLOG10(x);
break;
case RTLUT.ScaleType.LN:
x = _ScaleNormValueLN(x);
break;
case RTLUT.ScaleType.NasaPm25:
x = _ScaleNormValueNasaPm25(x);
break;
}//switch
if (x > 1.0) x = 1.0; else if (x < 0.0) x = 0.0;
var i = parseInt(x * this.nsb1);
return rsn > 0 ? (i >>> rsn) << rsn : i;
};
RTLUT.prototype.GetRgbForValue = function(x, rsn)
{
var i = this.GetIdxForValue(x, rsn);
return [this.r[i], this.g[i], this.b[i]];
};
var _SplitRGBLUT = function(src)
{
var nc = src.length / 3;
var rc = src.substring(0, nc);
var gc = src.substring(nc, nc * 2);
var bc = src.substring(nc * 2, nc * 3);
return { rc:rc, gc:gc, bc:bc, nc:nc };
};
var _vhtoi_u08 = function(d,s) { for(var i=0;i<d.length; i++)d[i]=parseInt(("0x"+s.substring(i<<1,(i<<1)+2))); };
var _GetTypedArraysForHexStringLUT = function(src)
{
var rgbc = _SplitRGBLUT(src);
var n = rgbc.nc >>> 1;
var r = new Uint8Array(n);
var g = new Uint8Array(n);
var b = new Uint8Array(n);
_vhtoi_u08(r, rgbc.rc);
_vhtoi_u08(g, rgbc.gc);
_vhtoi_u08(b, rgbc.bc);
return { r:r, g:g, b:b };
};
var _GetRGBsForTableID = function(table_id)
{
var row = null;
var rgb = null;
for (var i=0; i<RTLUT.LUTs.length; i++)
{
if (RTLUT.LUTs[i][0] == table_id)
{
row = RTLUT.LUTs[i];
break;
}//if
}//for
if (row != null)
{
rgb = _GetTypedArraysForHexStringLUT(row[13]);
}//if
return rgb;
};
RTLUT.LUTs =
[
[30,0,"Cyan Halo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
[32,8,"Jet","MATLAB", 1,1,1,1,1,1,0,0.0,0.0,"000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000103080C0F12181C1F232A2D3033393C3F42484C4F52585C5F646A6D70737A7D8083898C8F92989C9FA2A8ACAFB4BABDC0C3CACDD0D3D9DCDFE2E8ECEFF4FAFCFDFEFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFEFEFDFCF9F3F0EDEAE4DFDCD8D2CFCCC9C3C0BDBAB3B0ADAAA49F9C98928F8C8882807F7F00000000000000000000000000000000000000000000000000000000000001040A0D1013191C1F22282C2F32383C3F444A4D50535A5D6063696C6F72787C7F848A8E90949A9DA0A3A9ACAFB2B8BCBFC2C8CCCFD4DADDE0E3EAEDF0F3F9FBFDFEFEFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFEFEFDFBF8F2EFECE9E3E0DDDAD3D0CDCAC4BFBCB8B2AFACA8A29F9C9993908D8A837F7C77716E6C68625F5C5953504D4A43403D3A342F2C28221F1C18120F0C090401000000000000000000000000000000000000000000000000000000000000000000008F8F9092989C9FA2A8ACAFB4BABDC0C3CACDD0D3D9DCDFE2E8ECEFF4FAFCFDFEFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFEFEFDFCF9F3F0EDEAE4DFDCD8D2CFCCC9C3C0BDBAB3B0ADAAA49F9C98928F8C88827F7C7973706D6A63605D5A544F4C48423F3C38322F2C2923201D1A130F0C0802010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"]
];
RTLUT.ScaleType =
{
LN: 0,
LIN: 1,
LOG10: 2,
NasaPm25: 3
};
return RTLUT;
})();
// ICO: Renders marker icon to ivar "this.url" as base64 png.
// Can be retained in cache as rendering pngs is slow.
// This is completely ignorant of retina displays.
var RTICO = (function()
{
function RTICO(width, height, deg, lutidx, lutidx2, red0, green0, blue0, red1, green1, blue1, red2, green2, blue2, alpha_fill, alpha_stroke, shadow_radius, render_style)
{
this.width = width;
this.height = height;
this.deg = deg;
this.lutidx = lutidx;
this.lutidx2 = lutidx2;
this.red0 = red0;
this.green0 = green0;
this.blue0 = blue0;
this.alpha0 = alpha_fill;
this.alpha1 = alpha_stroke;
this.shd_r = shadow_radius;
this.red1 = red1;
this.green1 = green1;
this.blue1 = blue1;
this.red2 = red2;
this.green2 = green2;
this.blue2 = blue2;
this.rstyle = render_style;
this.url = null;
this.Render();
}//RTICO
var _RenderStatusCircle = function(ctx, ox, oy, outer_r, r, g, b, a, scale, is_online)
{
var c_green = "rgba(" + r + ", " + g + ", " + b + ", " + a + ")";
if (!is_online)
{
var min_angle = 0.0;
var max_angle = 2.0 * Math.PI;
var steps = 6.0;
var step_size = (max_angle - min_angle) / steps;
for (var i=0; i<steps; i++)
{
var start_angle = parseFloat(i) * step_size;
var end_angle = start_angle + step_size * 0.75;
ctx.beginPath(); // stroke thick black outline
ctx.arc(ox, oy, outer_r, start_angle, end_angle);
ctx.strokeStyle = "rgba(0,0,0," + a + ")";
ctx.lineWidth = Math.max(3.5 * scale, 3.5);
ctx.stroke();
ctx.beginPath(); // stroke thinner green inner arc
ctx.arc(ox, oy, outer_r, start_angle, end_angle);
ctx.strokeStyle = c_green;
ctx.lineWidth = Math.max(1.5 * scale, 1.5);
ctx.stroke();
// By default, looks a bit dark due to antialiasing with black,
// so stroke green 2x more at decreasing widths.
ctx.beginPath(); // repeat green stroke
ctx.arc(ox, oy, outer_r, start_angle, end_angle);
ctx.strokeStyle = c_green;
ctx.lineWidth = Math.max(1.0 * scale, 1.0);
ctx.stroke();
ctx.beginPath(); // repeat green stroke
ctx.arc(ox, oy, outer_r, start_angle, end_angle);
ctx.strokeStyle = c_green;
ctx.lineWidth = Math.max(0.5 * scale, 0.5);
ctx.stroke();
}//for
}//if
else
{
// ------------------------ outer ring -------------------------------
ctx.beginPath(); // stroke thick black outline
ctx.arc(ox, oy, outer_r, 0, 2 * Math.PI);
ctx.strokeStyle = "rgba(0,0,0," + a + ")";
ctx.lineWidth = Math.max(3.5 * scale, 3.5);
ctx.stroke();
ctx.beginPath(); // stroke thinner green inner arc
ctx.arc(ox, oy, outer_r, 0, 2 * Math.PI);
ctx.strokeStyle = c_green;
ctx.lineWidth = Math.max(1.5 * scale, 1.5);
ctx.stroke();
// By default, looks a bit dark due to antialiasing with black,
// so stroke green 2x more at decreasing widths.
ctx.beginPath(); // repeat green stroke
ctx.arc(ox, oy, outer_r, 0, 2 * Math.PI);
ctx.strokeStyle = c_green;
ctx.lineWidth = Math.max(1.0 * scale, 1.0);
ctx.stroke();
ctx.beginPath(); // repeat green stroke
ctx.arc(ox, oy, outer_r, 0, 2 * Math.PI);
ctx.strokeStyle = c_green;
ctx.lineWidth = Math.max(0.5 * scale, 0.5);
ctx.stroke();
}//else
};
RTICO.prototype.Render = function()
{
if (this.rstyle == RTICO.RenderStyle.Dot)
{
this.RenderDot();
}//if
else if (this.rstyle == RTICO.RenderStyle.Chevron)
{
this.RenderChevron();
}//else if
else
{
this.RenderDoubleTriangle();
}//else
};
RTICO.prototype.RenderDot = function()
{
var c = document.createElement("canvas");
var w_add = (this.shd_r - (this.width >> 1)) * 2;
var h_add = (this.shd_r - (this.height >> 1)) * 2;
var w_px = this.width + Math.max(0, w_add);
var h_px = this.height + Math.max(0, h_add); // ignore, shd_r is always 0 here.
c.width = w_px;
c.height = h_px;
var ctx = c.getContext("2d");
var r = ((this.width < this.height ? this.width : this.height) >> 1) - 1; // radius
var ox = w_px >> 1; // offset to center
var oy = h_px >> 1;
if (r <= 0) r = 1;
var scale = w_px / 20.0;
var outer_r = r - 1.0 * scale; // buffer for antialiasing
if (scale > 1.0) outer_r -= scale; // wtf
var inner_r = outer_r - 4.0 * scale; // 4px diff is ultimately about 1 visual pixel spacing
if (w_px <= 12) inner_r = outer_r - 3.0 * scale;
var c_fill = "rgba(" + this.red0 + ", " + this.green0 + ", " + this.blue0 + ", " + this.alpha0 + ")";
// ------------------------ inner dot -------------------------------
ctx.beginPath(); // fill with variable color
ctx.arc(ox, oy, inner_r, 0, 2 * Math.PI);
ctx.fillStyle = c_fill;
ctx.fill();
ctx.beginPath(); // stroke black outline
ctx.arc(ox, oy, inner_r, 0, 2 * Math.PI);
ctx.strokeStyle = "rgba(0,0,0," + this.alpha0 + ")";
ctx.lineWidth = w_px > 12 ? 1.5 * scale : 0.75 * scale;
ctx.stroke();
_RenderStatusCircle(ctx, ox, oy, outer_r, this.red1, this.green1, this.blue1, this.alpha1, scale, this.red1 == 0);
this.url = c.toDataURL("image/png");
};
RTICO.prototype.RenderChevron = function()
{
var c = document.createElement("canvas");
var w_add = (this.shd_r - (this.width >> 1)) * 2;
var h_add = (this.shd_r - (this.height >> 1)) * 2;
var w_px = this.width + Math.max(0, w_add);
var h_px = this.height + Math.max(0, h_add); // ignore, shd_r is always 0 here.
c.width = w_px;
c.height = h_px;
var ctx = c.getContext("2d");
var r = ((this.width < this.height ? this.width : this.height) >> 1) - 1; // radius
var ox = w_px >> 1; // offset to center
var oy = h_px >> 1;
if (r <= 0) r = 1;
var scale = w_px / 20.0;
var outer_r = r - 1.0 * scale; // buffer for antialiasing
if (scale > 1.0) outer_r -= scale; // wtf
var inner_r = outer_r - 4.0 * scale; // 4px diff is ultimately about 1 visual pixel spacing
if (w_px <= 12) inner_r = outer_r - 3.0 * scale;
var c_fill = "rgba(" + this.red0 + ", " + this.green0 + ", " + this.blue0 + ", " + this.alpha0 + ")";
_RenderStatusCircle(ctx, ox, oy, outer_r, this.red1, this.green1, this.blue1, this.alpha1, scale, this.red1 == 0);
// ---------------------- chevron ----------------------------
oy = Math.max(0, h_add) >> 1;
oy += 4.0 * scale;
var length = w_px - 4.0 * scale * 2.0;
var degrees0 = 180.0 - 30.0;
var degrees1 = 180.0 + 30.0;
var dx,dy,x0,y0,x1,y1;
// not sure why deg - 90 is needed...
degrees0 = (degrees0 - 90.0) * 0.01745329251994329576923690768489; // ->rad
degrees1 = (degrees1 - 90.0) * 0.01745329251994329576923690768489; // ->rad
dx = Math.cos(degrees0) * length;
dy = Math.sin(degrees0) * length;
x0 = ox + dx;
y0 = oy + dy;
dx = Math.cos(degrees1) * length;
dy = Math.sin(degrees1) * length;
x1 = ox + dx;
y1 = oy + dy;
ctx.beginPath();
ctx.strokeStyle = "rgba(0,0,0," + this.alpha0 + ")";
ctx.lineWidth = scale * 8.0 * 0.75;
ctx.moveTo(x0, y0); // bottom-right corner
ctx.lineTo(ox, oy + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1); // bottom-left corner
ctx.stroke();
var linediff = ((scale * 8.0 * 0.75) - (scale * 8.0 * 0.5)) * 0.5;
// inner filled color chevron
ctx.beginPath();
ctx.strokeStyle = c_fill;
ctx.lineWidth = scale * 8.0 * 0.5;
ctx.moveTo(x0 - linediff, y0 - linediff); // bottom-right corner
ctx.lineTo(ox, oy + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1 + linediff, y1 - linediff); // bottom-left corner
ctx.stroke();
this.url = c.toDataURL("image/png");
};
RTICO.prototype.RenderDoubleTriangle = function()
{
var c = document.createElement("canvas");
var w_add = (this.shd_r - (this.width >> 1)) * 2;
var h_add = (this.shd_r - (this.height >> 1)) * 2;
var w_px = this.width + Math.max(0, w_add);
var h_px = this.height + Math.max(0, h_add); // ignore, shd_r is always 0 here.
c.width = w_px;
c.height = h_px;
var ctx = c.getContext("2d");
var r = ((this.width < this.height ? this.width : this.height) >> 1) - 1; // radius
var ox = w_px >> 1; // offset to center
var oy = h_px >> 1;
if (r <= 0) r = 1;
var scale = w_px / 20.0;
var outer_r = r - 1.0 * scale; // buffer for antialiasing
if (scale > 1.0) outer_r -= scale; // wtf
var inner_r = outer_r - 4.0 * scale; // 4px diff is ultimately about 1 visual pixel spacing
if (w_px <= 12) inner_r = outer_r - 3.0 * scale;
var c_fill = "rgba(" + this.red0 + ", " + this.green0 + ", " + this.blue0 + ", " + this.alpha0 + ")";
var c_fill2 = "rgba(" + this.red2 + ", " + this.green2 + ", " + this.blue2 + ", " + this.alpha0 + ")";
_RenderStatusCircle(ctx, ox, oy, outer_r, this.red1, this.green1, this.blue1, this.alpha1, scale, this.red1 == 0);
// ---------------------- triangles ----------------------------
oy = Math.max(0, h_add) >> 1;
oy += 4.0 * scale;
var length = w_px - 4.0 * scale * 2.0; // scale * 1.5 = best for double triangle, scale * 2.0 = best for triple
var degrees0 = 180.0 - 30.0;
var degrees1 = 180.0 + 30.0;
var dx,dy,x0,y0,x1,y1;
degrees0 = (degrees0 - 90.0) * 0.01745329251994329576923690768489; // ->rad
degrees1 = (degrees1 - 90.0) * 0.01745329251994329576923690768489; // ->rad
var linediff = ((scale * 8.0 * 0.75) - (scale * 8.0 * 0.5)) * 0.5;
dx = Math.cos(degrees0) * length;
dy = Math.sin(degrees0) * length;
x0 = ox + dx;
y0 = oy + dy;
dx = Math.cos(degrees1) * length;
dy = Math.sin(degrees1) * length;
x1 = ox + dx;
y1 = oy + dy;
var y0_2 = y0 + 1.0 * scale; // asymmetric offset of bottom triangle, moving it down a bit
var y1_2 = y1 + 1.0 * scale;
var oy_2 = oy + 1.0 * scale;
var tri_h = y0 - (oy + scale * 4.0 * 0.5);
oy -= tri_h * 0.5; // draw the top triangle first for layering purposes
y0 -= tri_h * 0.5;
y1 -= tri_h * 0.5;
ctx.beginPath();
ctx.strokeStyle = "rgba(0,0,0," + this.alpha0 + ")";
ctx.lineWidth = Math.max(1.5 * scale, 1.5);
ctx.moveTo(x0, y0); // bottom-right corner
ctx.lineTo(ox, oy + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1); // bottom-left corner
ctx.closePath();
ctx.stroke();
// inner filled color chevron
ctx.beginPath();
ctx.fillStyle = c_fill;
ctx.moveTo(x0, y0); // bottom-right corner
ctx.lineTo(ox, oy + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1); // bottom-left corner
ctx.fill();
oy += tri_h * 1.0;
y0 += tri_h * 1.0;
y1 += tri_h * 1.0;
ctx.beginPath();
ctx.strokeStyle = "rgba(0,0,0," + this.alpha0 + ")";
ctx.lineWidth = Math.max(1.5 * scale, 1.5);
ctx.moveTo(x0, y0); // bottom-right corner
ctx.lineTo(ox, oy + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1); // bottom-left corner
ctx.closePath();
ctx.stroke();
// inner filled color chevron
ctx.beginPath();
ctx.fillStyle = c_fill2;
ctx.moveTo(x0, y0); // bottom-right corner
ctx.lineTo(ox, oy + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1); // bottom-left corner
ctx.fill();
ctx.beginPath();
ctx.strokeStyle = "rgba(0,0,0," + this.alpha0 + ")";
ctx.lineWidth = Math.max(1.5 * scale, 1.5);
ctx.moveTo(x0, y0_2); // bottom-right corner
ctx.lineTo(ox, oy_2 + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1_2); // bottom-left corner
ctx.closePath();
ctx.stroke();
// inner filled color chevron
ctx.beginPath();
ctx.fillStyle = c_fill;
ctx.moveTo(x0, y0_2); // bottom-right corner
ctx.lineTo(ox, oy_2 + scale * 4.0 * 0.5); // top-center
ctx.lineTo(x1, y1_2); // bottom-left corner
ctx.fill();
this.url = c.toDataURL("image/png");
var img = document.createElement("img");
this.deg = Math.random() * 180.0;
img.onload = function()
{
ctx.clearRect(0,0,c.width,c.height);
ctx.save();
ctx.translate(c.width/2, c.height/2);
ctx.rotate(this.deg*Math.PI/180);
ctx.drawImage(img,-img.width/2,-img.width/2);
this.url = c.toDataURL("image/png");
ctx.restore();
}.bind(this);
img.src = this.url;
};
RTICO.RenderStyle =
{
Dot: 0,
Chevron: 1,
DoubleTriangle: 2
};
return RTICO;
})();
// MKS: Marker manager
var RTMKS = (function()
{
function RTMKS(mapRef, pxScale, isMobile, fontCssClass, parse_format, render_style)
{
// Typed arrays, these hold the parsed log data.
this.raws = null; // CPM value of point
this.vals = null;
this.ids = null; // Original LogIDs of points.
this.times = null; // Datetime of marker, seconds since 1970-01-01.
this.onmaps = null; // 1=is a marker currently on map. 0=not on map.
this.lons = null; // X coordinate. EPSG:3857 pixel X/Y @ zoom level 21.
this.lats = null; // Y coordinate. EPSG:3857 pixel X/Y @ zoom level 21.
this.locstxt = null;
this.imgtxt = null;
this.linktxt = null;
this.m_idxs = null;
this.isMobile = isMobile; // Disables some caching and renders less markers per pass.
this.fontCssClass = fontCssClass;
this.parse_format = parse_format;
this.render_style = render_style;
this.pxScale = pxScale == null || pxScale < 1.0 ? 1.0 : pxScale;
this.width = 20; // Marker icon width, in non-retina pixels
this.height = 20; // Marker icon height, in non-retina pixels
this.alpha0 = 1.0; // Marker icon fill alpha, [0.0 - 1.0]
this.alpha1 = 1.0; // Maker icon stroke alpha, [0.0 - 1.0]
this.shd_r = 0.0; // Marker icon shadow radius, pixels.
this.icons = new Array();
this.lut_rsn = 2; // 256 >> 128 >> 64 colors
// The LUT gets the RGB values for a value.
this.lut = new RTLUT(this.parse_format == RTMKS.ParseFormat.SafecastRtRad ? 0.030 : 0.0,
this.parse_format == RTMKS.ParseFormat.SafecastRtRad ? 65.535 : 80.0,
this.parse_format == RTMKS.ParseFormat.SafecastRtRad ? 30 : 32,
this.parse_format == RTMKS.ParseFormat.SafecastRtRad ? RTLUT.ScaleType.LOG10
: RTLUT.ScaleType.LN);
this.mapref = mapRef;
this.inforef = null;
this.zoomlistener = null;
this.draglistener = null;
this.create_ss = (Date.now() * 0.001)>>>0;
// Note: Extent vec values are: x0, y0, x1, y1, ex0, ex1, z
//
// For lat/lon (EPSG:4326) these are aka:
// x0: min_lon
// y0: min_lat
// x1: max_lon
// y1: max_lat
// ex0: *if* the extent spans the 180th meridian, this contains the second extent's min_lon
// ex1: *if* the extent spans the 180th meridian, this contains the second extent's max_lon
// z: zoom level
//
// (For EPSG:3857, these are later translated to pixel x/y coordinates at zoom level 21.)
//
// If no 180th meridian span is present, this is indicated with:
// EPSG:4326: -9000.0
// EPSG:3857: 0xFFFFFFFF (aka UINT32_MAX in C)
this.markers = new Array(); // Markers currently on map.
this.mk_ex = new Float64Array([9000.0, 9000.0, -9000.0, -9000.0]); // x0, y0, x1, y1 - EPSG:4326 only.
this.last_z = 0;
this.AddGmapsListeners();
}//RTMKS
RTMKS.prototype._GetCurrentVisibleExtent = function()
{
var e = {};
var b = this.mapref.getBounds();
e.x0 = b.getSouthWest().lng();
e.y0 = b.getSouthWest().lat();
e.x1 = b.getNorthEast().lng();
e.y1 = b.getNorthEast().lat();
e.z = this.mapref.getZoom();
if (e.x0 > e.x1) // 180th meridian handling -- need to split into second extent
{ // but, y-coordinates stay the same, so only need two more x-coordinates.
e.ex1 = e.x1;