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hire http://bits.coop for all your emerging web tech needs: webgl, p2p, vr, offline, maps, and more!
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i went with the screen-space derivatives technique from the gpugems article because you can use the sign to know which side of the curve you're on, but now i'm getting strange artifacts. not sure if it's numerical issues (analytic derivs would be better, probs) or texture bugs
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now i have 2 separate bezier distance functions lol. should be able to remove one of them
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filling the area under the curve using the screen-space derivative approach of [u,v] barycentric coordinates in https://developer.nvidia.com/gpugems/gpugems3/part-iv-image-effects/chapter-25-rendering-vector-art-gpu … https://substack.net/wip/beztex1.html …pic.twitter.com/kKJMSgV3qJ
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then you can test each triangle against the cells of the lattice for intersections and copy the curves into each of the cells they overlap. each cell has a fixed (configurable, but affects perf) capacity, so you do need to be careful about too many curves in the same cell
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luckily i already had a SAT implementation lying around from some physics experiments for creating the lattice. each quadratic curve has 3 control points and the curve resides inside of a triangle described by those points (not counting the line width)http://github.com/substack/separating-axis-test …
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i want to use this technique for text rendering, which is somewhat trendy right now. i can parse ttf, convert cubic bezier to piecewise quadratics, and pack these curves into a vector sprite texture, like http://wdobbie.com/post/gpu-text-rendering-with-vector-textures/ …
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the red squares are cells in the lattice that contain at least one curve. i'm only reading the first curve for each cell right now, finally just got more than a single curve to work
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reading bezier curves from a texture using the bezier distance function from http://hhoppe.com/ravg.pdf https://substack.net/wip/beztex0.html …pic.twitter.com/EtfWTKvFbM
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substack proslijedio/la je Tweet
setting up styling by feature type for
#peermaps! working with the alexandria data set is fun cuz you get cool features like historic.archaelogical_site & historic.castle (styled here in red & yellow, respectively) :Dpic.twitter.com/4HXysorVni
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sparse query module for kappa-core for materialized views working for
#peermaps. this is going to drive sparse queries for the key/value store and spatial indexhttps://github.com/peermaps/kappa-sparse-query …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
substack proslijedio/la je Tweet
Dr. Sue Jarvi’s lab is at the forefront of Rat Lung Worm research. They developed the qPCR and are working on a blood test for humans. Also not eating sandwiches from island naturals ever again!https://bigislandnow.com/2020/01/05/hilo-woman-pulls-slug-from-mouth-after-eating-island-naturals-sandwich/ …
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substack proslijedio/la je Tweet
shed made of pallets & leftover metal roof, built by
@substack. look at all that storage + shelf space inside! even has a counter!pic.twitter.com/Vpm9LMaThL
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substack proslijedio/la je Tweet
Created using the wonderful https://substack.net/dialog.exe/index.html … by
@substack and an old#MacBook running#CloudReady
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i was on watch last night, waking up every hour or so when i heard any sound, and scared off a mom with at least one piglet. i got growled at
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wild pigs have gotten into the garden for the past 3 nights and have taken down lots of potato patches and 2 bananas. we've been shoring up the fences with pallets
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substack proslijedio/la je Tweet
RCMP were prepared to shoot peaceful unarmed Wet’suwet’en and arrest elders and remove children. That is why they blocked media and created a media restriction zone:https://www.theguardian.com/world/2019/dec/20/canada-indigenous-land-defenders-police-documents?CMP=share_btn_tw …
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substack proslijedio/la je Tweet
Friendly reminder folx! We are currently living under a mass extinction!
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substack proslijedio/la je Tweet
Mmmm, election time, time to form a one-sided emotional bond with a distant beady-eyed bureaucrat trying to gain control of a stockpile of nuclear weapons
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substack proslijedio/la je Tweet
#marinamoviereviews: "the coconut revolution" (2000): doc: "A Pacific island rose up in arms against mining giant Rio Tinto - & won despite a military occupation & blockade." these ppl are incredible. the world they built during an 8 yr blockade..wow..https://www.youtube.com/watch?v=1Sl8KJDOqK4&bpctr=1576110645 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
substack proslijedio/la je Tweet
"powering the current economy with renewables would consume the world’s lithium reserves in a very short amount of time. Trying to maintain a “green” version of global consumer society could lead to a scramble for rare metals to make previous waves of extractivism look gentle..."
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