Snow Line: Gameplay; Help Santa Claus collect the presents ready for delivery on Christmas Eve. Create our model view matrix 5. drawImage(image, dx, dy) context. The i represents the one-based index of the primitive being drawn. Is there any efficient method to draw it?. It lets you access a computer’s specialised graphics hardware using JavaScript, and render the output to a webpage in a regular old element. I am calculating 4 points and I connect them with a dotted line. Checkout this notebook to compare WebGL and SVG scatter plots with 75,000 random data points. Chọn bảng màu và bảng vẽ cho mình để trở thành Picasso thời đại mới. Aristochart – simple and sophisticated static 2D line charts. Drawing a cube in WebGL Above you see a spinning cube, with faces of different colors. com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. Learn about generative art, interactive animations, 3D graphics with ThreeJS, and custom shaders in GLSL. Now we have 6 vertices, and 1 face per string. Projects geometry to screen coordinates. Tip: Use the stroke() method to actually draw the path on the canvas. Lines and points are quite useful but the triangle is by far the most popular - all solid 3D objects are composed of triangles. All Articles in This Series. The second xyz vertex finishes the first line. I supply an HTML fragment which includes the JavaScript (JS) master code; you supply a file with a JS function prescribing data. prepare() to set up everything and mesh. When drawing several thousands of lines in WebGL or Canvas, the rendering takes a long time (up to a second or more). Loading the image into a Canvas object lets you play around with the individual pixels and D3 projection. Играйте в игры про рисование на Y8. The third line, tells the shader which texture we're going to be using. Tinkercad is a free online collection of software tools that help people all over the world think, create and make. This would be similar to drawing lines of latitude/longitude on a sphere. Here is a screen-shot, the red line is X-axis, green line is Y-axis and blue line is Z-axis: Here is the source code of this extension, but you may need to check it from github to get the latest version as it may be updated from time to time. This way of drawing works when drawing a small number of objects. A spare parts catalog based on input data from Dassault Composer with interactive 3D models in WebGL (three. The second xyz vertex finishes the first line. Want a square or a 3D object? We can use WebGL functions to draw those as well. Your function would draw 2500 lines where only 100 lines would suffice. Finally the closed path is filled with the RGB color #0000ff (blue). This applies worldwide. Step 2 − Define the Geometry and Store it in the Buffer Objects. void drawArrays(enum mode, int first, sizei count); mode: POINTS, LINE_STRIP, LINE_LOOP, LINES, TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES first: May not be a negative. Create our projection matrix 4. Here is mine using the three. Step 3 − Create and Compile the Shader Programs. js – time-series line graphs with jQuery and Raphael. 22 Experimental WebGL Demo Examples Article by Awwwards in Web Design - May 15 WebGL is a web standard created to display 3D graphics in any platform that supports OpenGL. The first thing we need is a web page element to draw on. WebGL Academy. I want to draw perfect line using webgl. Then color attachment are mapped to draw buffer slots here => ext. Add Snow Line to Your Website Help. This chapter explains the drawing modes supported by WebGL. I had integrated a small gameplay for the mouse where you were able to click on an apple to destroy it. drawArrays(mode, first, count); Parameters mode A GLenum specifying the type primitive to render. To draw a planet rotating around the sun, as shown in Figure 3. In this episode, I show how to draw lines with WebGL. obj model in your browser using small open source modules. In this tutorial, I will show you how to draw a nice, round, circle. Using some simple math to simulate hand drawn lines. TRIANGLES can draw a rectangle with four coordinates. Techniques for fast, in-browser drawing of street centerlines have interested me since I looked closely at the new iOS Google Maps , which uses vector rendering to achieve good. Definition of draw the line in the Idioms Dictionary. WebGL allows us to create real 3D content and render it in a web browser that supports it and the graphics capabilities to handle such visually rich content. draw_sprite_general Colour blending is only recommended for the HTML5 target when WebGL is enabled, although you can still set the blending colour if it is not. UNSIGNED_INT, idxBuffer); But when I try to use the gl. Chrome Experiments is a showcase of work by coders who are pushing the boundaries of web technology, creating beautiful, unique web experiences. 1970 A drawing component for Mapbox GL JS Publisher. I checked pixi. It is mostly for learning purposes as some of the libraries listed are outdated/not maintained anymore. createProgramInfo compiles a shader and creates setters for attribs and uniforms. Zen Photon Garden. Building a Molecular 3D Viewer using WebGL and HTML5. js]-A modified code01. Here is an example that creates a 100,000 point scatter plot using plotly express with WebGL rendering enabled. com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. The initial gameplay was clearly made for a VR only usage. I'll cover the following topics in the code samples below: PageSolidBrush, ArrayList, ASP. In WebGL there are three types of drawing primitives: points, lines and triangles. In this article, we'll be using what we learned to draw a simple 3D representation of benzene. Make sure to close all tabs and kill any Chrome processes with Task Manager before starting it with the command-line argument. OpenStreetMap (OSM) is a worldwide geographic database created from public domain data sources and user created data. The basic concept with WebGL software is that we write a normal web-page, and use the new HTML5 canvas tag to define an area of the page (a blank rectangle) that our rendering will draw to. WebGL - Drawing a circle in 2d; WebGL - Multiple attributes in GLSL shaders; WebGL - Drawing Different Shapes; WebGL - Intro to Uniforms in GLSL; WebGL - Drawing Points; WebGL - Finding Coordinates; WebGL - TRIANGLE_FAN; WebGL - How to use TRIANGLE_STRIP; WebGL - Drawing Triangles; WebGL - Line Loop; WebGL - LINE_STRIP; WebGL - Drawing a line. If possible, please ensure that you are running the latest drivers for your video card. The advantages are: Simple and efficient 2D WebGL interface; Using WebGL native line drawing; Using vec2 instead of vec4 to in the vertex shader to decrease the CPU utilization; Full control over the color of each line in each frame; What are the use cases?. Introduction. This is very powerful if you want to draw that perfect curve. OpenGL is a low level library for drawing 2D graphics. js, there are two render modes: P2D (default renderer) and WEBGL. Since OpenGL 3. Sigma provides a lot of built-in features, such as Canvas and WebGL renderers or mouse and touch support, to make networks manipulation on Web pages smooth and fast for the user. WebGL is based on and follows the OpenGL ES (Embedded Systems) spec, which is a subset of OpenGL. Any advice on this would be great. WebGL has a lot of small settings that you have to setup nearly every time you draw something to the screen. The fourth vertex completes the third line. Here is mine using the three. The code included below uses HTML5's experimental WebGL functionality to draw a 3D scene containing a few textured rectangular boxes with some simple lighting. • Likewise, VectorLine. Shadows Pattern Linear Gradient Radial Gradient. The material controls how the rendering is done (blending, textures, etc. appendChild( renderer. So, binding…. Here I explore a few different techniques for 2D and 3D line rendering, and accompany each with a small canvas demo. The interactive component of the demo is done with JQuery. A couple of days ago I had the problem: how to draw lines with custom width of line on WebGL into the Windows browsers. Nick Desaulniers. js is built on d3. Using this. SVG test use multiple line tag (1 per star) Flash bitmap raster vector shape on the fly via draw() CSS test is a stacks of transformed div tag. This chapter explains the drawing modes supported by WebGL. LINE_LOOP — similar to LINE_STRIP, except it closes the line from vn to v0, defining a loop. drawImage(image, sx, sy, sw, sh, dx, dy, dw, dh). As @whileBreak said you can use the line renderer or use GL_QUADS to draw larger lines (but that doesn't look great at the joins unless you add extra polys to take them into account). Some functions set states, other functions query the current state. Fixed a bug causing in newer WebGL implementations not to show textures when using non-power-of-2 sizes CopperLicht 1. I know you were wanting a free solution but if you get stuck then Vectrosity is great and probably ideal for what you want to do. LINE_STRIP: Draws a straight line to the next vertex. I find there are several mode in drawArrays function. Here, we set the antialias to true, because we want the edges of objects to be smooth, not jagged. I have requirement to draw anti-aliased line and text in WebGL (canvas 2D). Drawing Lines is Hard Rendering with Line Primitives. If you pass four vertices, A, B, C and D, two lines are drawn: one between A and B, and one between C and D. When drawing several thousands of lines in WebGL or Canvas, the rendering takes a long time (up to a second or more). A Generalized Cylinder is a 3D geometric object created by "sweeping" a 2D face (often a circle/square/polygon/etc) across a spine, which is some line or curve. Drawing Basic Primitives. WebGL - Drawing a circle in 2d; WebGL - Multiple attributes in GLSL shaders; WebGL - Drawing Different Shapes; WebGL - Intro to Uniforms in GLSL; WebGL - Drawing Points; WebGL - Finding Coordinates; WebGL - TRIANGLE_FAN; WebGL - How to use TRIANGLE_STRIP; WebGL - Drawing Triangles; WebGL - Line Loop; WebGL - LINE_STRIP; WebGL - Drawing a line. js has many other things that I don't need. What is the easiest way to draw a long 3D tube that follows a 3D path. ARRAY_BUFFER, new Float32Array(vertices), gl. gl: an open software ecosystem for WebGL, built on top of browserify and npm. Context2D Style. A simple lit cube in WebGL might easily take over 60 calls into WebGL. Drawing Lines in 3D. Processing. So, binding…. I’ll assume you’ve chosen a browser that supports all the rendering technologies, and that you want to render with Canvas or WebGL, since they’re the more standard choices. GLmol - Molecular Viewer on WebGL/Javascript , GLmol also runs on WebGL enabled safari in iOS Supported drawing double/triple bonds in line representation. The rest of this section addresses polygon antialiasing when you're using GL_FILL as the polygon mode. The initial gameplay was clearly made for a VR only usage. WebGL Earth is an open-source virtual globe made with HTML5 and Canvas WebGL technology. So, with a little math and a lot of processing,. vertexAttribPointer( attribLocation, attribSize, type, normalize, stride, offset) location from shader program number of components per vertex. Therefore, you can use these basic shapes to draw anything. Multiple draw calls sometimes are needed to build up a scene. Uploading a texture from CPU to GPU memory is not very performant but you can get away with it on computers. But you also surely noticed we used a buffer and wonder why. Hello all, This short code works well. The latter is of course what’s used most of the time, so we will focus entirely on triangles in the rest of this article. The above code will draw two sections of text on the same line, with the first text being drawn white (as that is the base drawing colour) and the second text being drawn with a lime green to normal green gradient. webgl animation / cloth animation / keyframes animation / skinning / blending animation / skinning / morph animation / multiple camera camera / array camera / cinematic camera / logarithmicdepthbuffer clipping clipping / advanced clipping / intersection clipping / stencil decals depth / texture effects / anaglyph effects / ascii effects / parallaxbarrier effects. Okay now, you know how to draw a square and basically every shape thanks to primitives and elements. I’m putting in a 20ms delay, so we’ll get roughly 50fps, which is more than enough. Shaders are small programs that tell WebGL. SVG test use multiple line tag (1 per star) Flash bitmap raster vector shape on the fly via draw() CSS test is a stacks of transformed div tag. The cheaper ones' lines definitely weren't as good, but SGIs did have pretty nice line support back in the day, better than what you get in WebGL today. Minecraft eg one line Online is a Minecraft Games game that you can play free online on Yaksgames. Играйте в игры про рисование на Y8. Step 5 − Drawing the Required Object. It draws a line from the first vertex to the second, which gives us the bottom line. Introduction This is a library targets 2D hardware-acclerated graphic rendering. Possible values are: gl. net 23-Sep-19 06:25 AM. To get started with the applet, just go through the items in the Example menu in the upper right. If there were a way to reduce the number of lines you have to check, then you might be right that a fragment shader would be faster. Draw lines in different colors using WebGL. com! ! Apasă acum pentru a juca Draw Line. I was wondering if there is a way to improve this by batching the draw to WebGL somehow. I'm trying to draw a circle using simple vertices points and a big gl_PointSize value. And on the 7th wall you do red lines from the midpoints of the four sides. io you can make complex 3D models, create beautiful photorealistic renderings, and share them without installing any software programs. NET, Float, and Class. By clicking "Add Snow Line to Your Website", you agree to the Webmaster Terms and Conditions. For each line that needs to be updated, I clear the PIXI. The question is where do we draw the line? To me the answer is totally dependent on the circumstances. html]-A slightly more complicated WebGL program - draw a square composed of 2 triangles. Hello, I try to port this example from WebGL: ch02/ClickedPoints in OpenTK. WebGL support is really awesome nowadays: Chrome, Firefox, Safari, Internet Explorer and Edge all support WebGL. The problem; however, is that we are creating 1 texture per string, which means we have 1 draw call per texture. mozilla webGL log. js Annotations. If we know how to draw one triangle, we can replicate this process to draw multiple triangles (polygons) on canvas. This page demonstrates drawing lines in WebGL with different line widths, segment sizes and colors. Hi Soil, Most of your question is already answered in this topic. Change control method: Touch camera VR Device orientation camera Gamepad camera Virtual joysticks camera Anaglyph camera. org for more info Clicking on the…. Source Code. com에서 무료 게임 Draw a Line(을)를 플레이하십시오! Draw a Line 을(를) 플레이하려면 Click now를 클릭하십시오! Draw a Line(와)과 비슷한 최고의 게임들을 즐기십시오. Each geometry type has a corresponding draw action class. The WebGL Globe is an open platform for geographic data visualization featuring latitude/longitude data spikes, color gradients based on data value and mouse wheel zoom functionality. Possible values are: gl. Checkout this notebook to compare WebGL and SVG scatter plots with 75,000 random data points. I supply an HTML fragment which includes the JavaScript (JS) master code; you supply a file with a JS function prescribing data. Remove all control points (except two points, which are required to draw a line) and enter the values of x and y coordinates of start and end points. Lines and points are quite useful but the triangle is by far the most popular - all solid 3D objects are composed of triangles. Basically, you create a new Mesh or IndexedMesh object by giving a WebGL primitive (e. Okay now, you know how to draw a square and basically every shape thanks to primitives and elements. , RenderingContext and RenderingContext2) to prevent that duplication these 600+ constants are defined in one abstract class (WebGL). Circles are one of the few shapes that are not default in OpenGL, but the good news is, they are easily created using lines. WebGL has no support for rendering polygons, so we implemented it using only two draw calls. webGL - Draw a line on a surface I have a three dimensional textured surface that I need to draw a colored line on. I’m sure a lot of you will disagree with my assertion that a single loose bill as large as $100 aimlessly blowing in the street should be considered a personal windfall , no pun intended. Our first WebGL program: draw something 1. leaflet - Drawing line following the road. ), refraction, resonance, phased arrays, and the Doppler effect. WebGL will clip all primitives to this range. But you might want to have your marker as a 3D object, to accurately reflect the position you're annotating. 0 API The same OpenGL ES used by iPhone and Froyo. JS is a WebGL framework based on OpenSceneGraph concepts. BocoupLLC 5,315 views. This example draws the points in position of mouse click. This post is part of the series WebGL 2 Development with PicoGL. SVG uses an eXtensible Markup Language (XML) specification. I suppose I could just make a double plot of the data just off-set a bit but I'm not exactly sure how to do this for a. WebGL does not assign a meaning to the values. Drawing an Object with the WebGL Graphics Pipeline The simplest surface you can draw is a triangle. drawElements(gl. “Draw” to find satellite images that match your every line; “Drag” to create an infinite line of connected rivers, highways and coastlines. Geometry (or THREE. You can also create your own antialiased framebuffer and resolve that to the canvas. Our new method for drawing polylines is to draw a screen-aligned quads for each segment of the line. A WebGL Tour of the Solar System: Mars, Part One. void drawArrays(enum mode, int first, sizei count); mode: POINTS, LINE_STRIP, LINE_LOOP, LINES, TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES first: May not be a negative. Contribute to mattdesl/webgl-lines development by creating an account on GitHub. Use Mesh class - doesn't require game object, generated on the fly and much faster. • Likewise, VectorLine. Drawing • We are almost able to draw the triangle! • Exciting! • Still a couple of steps • Need to bind the buffer we are drawing • Need to explain to WebGL how to read data off the buffer gl. Programmed using Javascript Shaders coded using ESSL Shaders is a program runs on GPU during rendering pipeline. In the How to use arcTo() on an HTML5 canvas tutorial I showed how arcTo could make a nice arrow head, but cheated, and did the example on a nice horizontal line. Graphics object and then redraw it from scratch. Using this. TRIANGLES can draw a triangles with three coordinates. And it's time for a tutorial update as well. After a while it'll give you a report, showing progressive screen grabs as the frame was built, and all of the WebGL calls that created it. -A very simple WebGL program that does nothing but opens a canvas and clear it in yellow [code00. WebGL allows to draw either points, or line segments, or triangles. how to draw line how to draw a line in asp. The below steps are needed to create a WebGL application for drawing points. I was able to get into using WebGL as a depolyment target for my Unity games! This course can easily help give any sort of experienced Unity developer the know-how to deploy to WebGL simply and professionally. Here is the game Aquaplane, part of the Interphase 1 book, running in WebGL:. D3 Globe with Canvas, WebGL, and Three. You can pass the renderer's options in the first argument as a map. STREAM_DRAW:表示只会向缓存区对象写入一次数据,然后绘制若干次; gl. In this episode, I show how to draw lines with WebGL. ARRAY_BUFFER, new Float32Array(vertices), gl. Based on OpenGL ES 2. BufferGeometry) and add it to a THREE. Clear the depth & color buffers 3. Add Snow Line to Your Website Help. Context • To&draw&inside&of&acanvas&elementyou&have&to& specify&the&api& • two&canvas&contexts:&"2D"&and&"webgl” • To&obtain&acontext,&call&the&canvas&method&. The material controls how the rendering is done (blending, textures, etc. Is there a simple way to draw a line onto this surface? The best result I have gotten so far. As such, whenever one is required to draw a curve, one has to either rasterize it himself (through GL_POINTS) which is slow, or approximate it using a number of line segments by drawing a many sided regular polygon. The GL_POINTS primitive we have been using thus far is reasonably straightforward; for each vertex specified, it draws a point. Then the context's drawing methods are called to create a set of paths that trace the triangle. Need to draw a line in one-pixel-width when antialiasing is on. To understand how Three. COLOR_ATTACHMENT1_WEBGL]); (line 103) I guess this is how targets are binded. WebGL has a lot of small settings that you have to setup nearly every time you draw something to the screen. But I couldn’t possibly write about lines without mentioning this extremely informative and digestible article, written by Matt DesLauriers about everything you’d want to know about drawing lines in WebGL. Listing 3 shows that the code for obtaining a 3D drawing context from a canvas element is almost the same as in the 2D case. The WebGL Globe is an open platform for geographic data visualization featuring latitude/longitude data spikes, color gradients based on data value and mouse wheel zoom functionality. Here is a screen-shot, the red line is X-axis, green line is Y-axis and blue line is Z-axis: Here is the source code of this extension, but you may need to check it from github to get the latest version as it may be updated from time to time. The draw experience is built upon specific classes referred to as draw actions. This tutorial features a working example on CodePen and explains the essential code segments. "Draw" to find satellite images that match your every line; "Drag" to create an infinite line of connected rivers, highways and coastlines. Renting out an abandoned convent on the outskirts of New York City to record the follow-up to the hellacious Rocks may not have been the best idea, but 1977's Draw the Line still managed to be another down-and-dirty Aerosmith release. Let's draw lines and bump balls! You can draw any shape to form a bridge between the magic dots (Dots). docs examples. You can check it yourself here. It's time to draw the line between hearing about something and doing it! In this tutorial I will show you the nuts and bolts of what it's like to design an algorithm. ), refraction, resonance, phased arrays, and the Doppler effect. The first line shown is drawn as a triangle strip so line segments are connected by 2 triangles, resulting in a smoother join. Create our model view matrix 5. Land Lines is an experiment that lets you explore Google Earth satellite imagery through gesture. Writing efficient WebGL code requires a certain mindset. Aristochart – simple and sophisticated static 2D line charts. If possible, please ensure that you are running the latest drivers for your video card. To set up the screen for drawing in 2D, use GL. In beginning the point is drawn in (0, 0. Drawing a cube in WebGL Above you see a spinning cube, with faces of different colors. Our new method for drawing polylines is to draw a screen-aligned quads for each segment of the line. I have requirement to draw anti-aliased line and text in WebGL (canvas 2D). WebGL is 3d inside a canvas element and a canvas is a black box from the html page point of view. The cheaper ones' lines definitely weren't as good, but SGIs did have pretty nice line support back in the day, better than what you get in WebGL today. The set of attributes and uniforms that are used in drawing a primitive is determined by the source code of the shaders that are in use when the primitive is drawn. Draw your own nebula right in your browser. I have a collection of 3D points that represent a route through my world and I want to highlight it. Could someone ELI5 to me, what is an index buffer and how is it related to vertex buffers?. Learn about generative art, interactive animations, 3D graphics with ThreeJS, and custom shaders in GLSL. This is exactly what the next primitive, GL_LINES, does. Drawing a line index. “Draw” to find satellite images that match your every line; “Drag” to create an infinite line of connected rivers, highways and coastlines. UNSIGNED_INT I run into the following error:. Pixel Art is a pixel style painting and coloring game. You can check it yourself here. I want to slow down the drawing and for example draw a point (wait 1 second), draw a second point (wait another second), draw another point (wai. If you take a pause and try to search over the Internet, you will find one of following decisions:. Particle effect systems running in a browser via WebGL. Generic code for WebGL Earth data plotting In a previous post , I said I would post code for WebGL data presentation, in the style of posts here , here , and here. Drawing loop is 30 frames per second. js Published on 2 April 2013 During the last hackday at Marmelab , I decided to play with Three. We also need to be able to customise things like the line and fill colours, and line thickness. Introduction. js doesn't support different materials for same line geometry, so only black edges for now, and 2) line width is fixed to one pixel becouse the parameter is ignored (see here, looks like a webgl gap). WebGL compatibility check; How to run things locally; How to use WebGL 2; Drawing lines; Creating text; Loading 3D models; FAQ; Useful links; Next Steps. Currently the Windows browsers support only 1px line width (due to the use of DirectX Angle Layer). com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. Step 2 − Define the Geometry and Store it in the Buffer Objects. js]-A modified code01. Engines and libraries. Finally the drawing function, it is actually quite simple. The GL_POINTS, GL_LINES, GL_LINE_STRIP, and GL_LINE_LOOP primitives can't be offset with glPolygonOffset(). Syntax void gl. Some older devices were not capable to run it though. In web technology terms, WebGl is the 3d drawing context of the HTML5 element. WebGL® is a software interface for accessing graphics hardware from within a web browser. UNSIGNED_INT, idxBuffer); But when I try to use the gl. We want to draw a square - and a square can be composed of two triangles. It also will be the beginning vertex for the next line. TRIANGLES can draw a rectangle with four coordinates. The result would be:. Possible values are: gl. We also need to be able to customise things like the line and fill colours, and line thickness. Uploading a texture from CPU to GPU memory is not very performant but you can get away with it on computers. If I draw it as a THREE. Can anyone point me to techniques for drawing lines, with the mouse, on 3D objects in WebGL or OpenGL? Can anyone point me to techniques for drawing lines, with. SVG uses an eXtensible Markup Language (XML) specification. As I know (and I hope my understanding is correct): LINES can draw a line between two coordinates. Найдите в себе художника и придумайте красивый дизайн и татуировки. published 1. Here, we set the antialias to true, because we want the edges of objects to be smooth, not jagged. Want a square or a 3D object? We can use WebGL functions to draw those as well. Rendering polygons. To draw a planet rotating around the sun, as shown in Figure 3. WebGL is designed and maintained by the non-profit Khronos Group. WebGL Scroll Spiral. draw() to draw the mesh. Press the G key to toggle gravity. I am trying to learn a bit of WebGL and Three. • Likewise, VectorLine. Circles animated with WebGL. door2solution software gmbh is one of the leading companies creating technical eCommerce. The line drawn in the previous examples have a flat ends. I have a webGL application and my understanding is there is no option or at least the option to make thick lines is not working so I thought I would try to write my own routine. WebGL Support in EaselJS January 16, 2014 23 Comments Announcement , Articles EaselJS , libraries , planetary gary , WebGL Please note that SpriteStage & SpriteContainer classes are now deprecated and have been replaced by the much faster and easier to use StageGL !. drawElements(gl. UNSIGNED_INT, idxBuffer); But when I try to use the gl. Indeed it has inherited from the plurality of licensed CAD software. I've been able to successfully embed eDrawings from 3dcontentcentral. Glass and steel, trees and water. But under the hood, the original 100+ lines of WebGL code in draw3D() became about 10 lines of Three. I have requirement to draw anti-aliased line and text in WebGL (canvas 2D). Again, this is the mono-threaded nature of JavaScript that generates this complexity. html; Drawing an arc index. The call to mat4. I suppose I could just make a double plot of the data just off-set a bit but I'm not exactly sure how to do this for a. Set our matrices in our shader program 6. html where I draw the same square 3 x 3 times to 9 different viewport.