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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki

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Optical ray tracing for photovoltaic devices and luminescent materials

daniel.farrell.name/freebies/pvtrace

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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1 watching
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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1 watching
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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pvtrace -- Optical ray tracing for photovoltaic devices and luminescent materials
-------
pvtrace was originally written to simulate luminescent solar concentrators during my PhD studies. However it has grown into a much more powerful tool, capable of optical ray tracing complicated structures, and the collection of statistical data to enable characterisation of optics useful for photovoltaics and solar energy conversion.
Overview of features:
* Constructive Solid Geometry
* Generalised 3D ray intersections (ray optics):
- ray-box
- ray-cylinder
- ray-CSG object
* Arbitrary 3D object transformations:
- translation
- rotation
- scaling and skewing
* Photon path visualiser
* Statistical collection of photonic properties:
- wavelength
- direction
* Automatic Fresnel reflection and refraction
* Sampling from statistical distributions:
- optical absorption coefficient
- emission spectrum
- wavelength and angular reflectivity
pvtrace is written entirely in Python. Using the numpy library. This was chosen to emphasis rapid development, learning and collaboration rather than speed of execution. On a single core machine pvtrace takes a few minutes to produce sensible results which for me is an acceptable trade-off considering the pleasure it was to write in Python!
Authors:
Daniel J Farrell -- Original author and benevolent dictator
Carl Poelking -- Constructive Solid Geometry
Karl C Godel -- Convex objects, Faces, and Polygons
Markus Fuhrer -- povray scene rendering and multiprocessing
Amanda Chatten -- Windows friendly
Installation:
For detailed installation instructions see the wiki,
http://github.com/danieljfarrell/pvtrace/wiki
About
Optical ray tracing for photovoltaic devices and luminescent materials
daniel.farrell.name/freebies/pvtrace
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