Nanovg tutorial

GeeXLab 0. NanoVG is a small C library for drawing antialiased 2D vector graphics. So do not hesitate to tweak and hack them to understand how to use NanoVG related functions. I will update the reference guide as soon as possible. The support comes with two types of functions: low level functions and high level functions. Low level functions follow NanoVG functions and allow to build any kind of 2D graphics.

First thing to know is that many features of NanoVG are based on the stencil buffer. So you have to enable it by reserving some bits in the depth buffer stencil data is stored in the depth buffer. By default GeeXLab sets a bit depth buffer in that case, there is no room for the stencil buffer.

nanovg tutorial

To enable both depth and stencil buffers, you have to initialize the demo with the following XML code:. This function clears all the currently defined paths. The blur option is really cool! This functions pack several calls to NanoVG native functions to easily draw widgets like windows, sliders or buttons. As you can see, it's quite easy to get a nice tool window:.

Your email address will not be published. Your Website. Save my name, email, and website in this browser for the next time I comment. Currently you have JavaScript disabled. In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page.

Click here for instructions on how to enable JavaScript in your browser. Home Contact About. Drawing a text is simple. Leave a Comment Cancel Reply Your email address will not be published.Sign up for your own profile on GitHub, the best place to host code, manage projects, and build software alongside 40 million developers. Learn more about blocking users. Learn more about reporting abuse. Simple stupid SVG parser. C Light-weight online font texture atlas builder.

Game and tools oriented refactored version of GLU tesselator.

nanovg tutorial

GLU tesselator ported to Javascript, performs polygon boolean operations and triangulation. JavaScript 63 Seeing something unexpected? Take a look at the GitHub profile guide. Skip to content. Dismiss Create your own GitHub profile Sign up for your own profile on GitHub, the best place to host code, manage projects, and build software alongside 40 million developers.

Sign up. Mikko Mononen memononen. Block or report user Report or block memononen. Hide content and notifications from this user. Learn more about blocking users Block user. Learn more about reporting abuse Report abuse. Popular repositories nanovg.

Learn how we count contributions. Less More. April memononen has no activity yet for this period. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. It is aimed to be a practical and fun toolset for building scalable user interfaces and visualizations.

If you know canvas, you're up to speed with NanoVG in no time. The drawing context is created using platform specific constructor function. If you're using the OpenGL 2. The implementation can be chosen using a define as in above example.

See the header file and examples for further info. Drawing a simple shape using NanoVG consists of four steps: 1 begin a new shape, 2 define the path to draw, 3 set fill or stroke, 4 and finally fill or stroke the path. Calling nvgBeginPath will clear any existing paths and start drawing from blank slate. There are number of number of functions to define the path to draw, such as rectangle, rounded rectangle and ellipse, or you can use the common moveTo, lineTo, bezierTo and arcTo API to compose the paths step by step.

Because of the way the rendering backend is build in NanoVG, drawing a composite path, that is path consisting from multiple paths defining holes and fills, is a bit more involved. NanoVG uses even-odd filling rule and by default the paths are wound in counter clockwise order. Keep that in mind when drawing using the low level draw API. Texture binding is also affected. Texture updates can happen when the user loads images, or when new font glyphs are added.

Glyphs are added as needed between calls to nvgBeginFrame and nvgEndFrame. The data for the whole frame is buffered and flushed in nvgEndFrame. The following code illustrates the OpenGL state touched by the rendering code:. See the header file nanovg. The library is licensed under zlib license Fonts used in examples:. Skip to content.

Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. C Lua. Branch: master.

Find file. Sign in Sign up. Go back.NanoVG contains state which represents how paths will be rendered. The state contains transform, fill and stroke styles, text and font styles, and scissor clipping. Fill and stroke render style can be either a solid color or a paint which is a gradient or a pattern. Solid color is simply defined as a color value, different kinds of paints can be created using LinearGradientBoxGradientRadialGradient and ImagePattern.

Current render style can be saved and restored using Save and Restore. The paths, gradients, patterns and scissor region are transformed by an transformation matrix at the time when they are passed to the API.

The current transformation matrix is a affine matrix:. Where: sx,sy define scaling, kx,ky skewing, and tx,ty translation.

nanovg tutorial

The last row is assumed to be 0,0,1 and is not stored. Apart from ResetTransformeach transformation function first creates specific transformation matrix and pre-multiplies the current transformation by it. Current coordinate system transformation can be saved and restored using Save and Restore. NanoVG allows you to load jpg, png, psd, tga, pic and gif files to be used for rendering.

In addition you can upload your own image. NanoVG supports four types of paints: linear gradient, box gradient, radial gradient and image pattern. These can be used as paints for strokes and fills. Scissoring allows you to clip the rendering into a rectangle.

This is useful for various user interface cases like rendering a text edit or a timeline. Drawing a new shape starts with BeginPathit clears all the currently defined paths. Then you define one or more paths and sub-paths which describe the shape. The are functions to draw common shapes like rectangles and circles, and lower level step-by-step functions, which allow to define a path curve by curve.

NanoVG uses even-odd fill rule to draw the shapes. Solid shapes should have counter clockwise winding and holes should have counter clockwise order. To specify winding of a path you can call PathWinding. This is useful especially for the common shapes, which are drawn CCW. Finally you can fill the path using current fill style by calling Filland stroke it with current stroke style by calling Stroke. The appearance of the text can be defined by setting the current text style and by specifying the fill color.

nanovg tutorial

Common text and font settings such as font size, letter spacing and text align are supported. Font blur allows you to create simple text effects such as drop shadows. Font measure functions return values in local space, the calculations are carried in the same resolution as the final rendering.

This is done because the text glyph positions are snapped to the nearest pixels sharp rendering. The local space means that values are not rotated or scale as per the current transformation. For example if you set font size to 12, which would mean that line height is 16, then regardless of the current scaling and rotation, the returned line height is always Some measures may vary because of the scaling since aforementioned pixel snapping.

While this may sound a little odd, the setup allows you to always render the same way regardless of scaling. BeginFrame defines the size of the window to render to in relation currently set viewport i.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Web Demo. Smith and Winston features a massively destructable voxel world, rapid twin stick combat, physics puzzles and Metroid style discovery. Encounter endless hordes of enemies, traps, puzzles, secrets and lots of loot, as you battle your way through procedurally generated levels to reach the top of the Forsaken Spire.

Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit abff Apr 17, Babylon Native Build cross-platform native applications with the power of the Babylon.

Babylon Native Nira Instantly load and view assets on any device. All you need is a web browser. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Updated ImGui.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

All dependencies are jointly built using a CMake-based build system. For instance, the following two lines from the included example application add a new button to an existing window window and register an event callback. The following lines from the example application create the coupled slider and text box on the bottom of the second window see the screenshot. For instance, the source code below was used to create the following example application.

By using, distributing, or contributing to this project, you agree to the terms and conditions of this license. Skip to content.

How to build User Interfaces and 2D Shapes with NanoVG

Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit 24fc12c Mar 16, You signed in with another tab or window.

Reload to refresh your session. You signed out in another tab or window. Sep 8, Sep 6, Mar 16, Sep 7, Sep 11, GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again.

If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Python bindings of all functionality are provided using pybind Note : this repository is currently in maintenance-only mode.

Note that the dependency library NanoVG already includes some basic example code to draw good-looking static widgets; what NanoGUI does is to flesh it out into a complete GUI toolkit with event handling, layout generation, etc. All dependencies are jointly built using a CMake-based build system.

For instance, the following two lines from the included example application add a new button to an existing window window and register an event callback. The following lines from the example application create the coupled slider and text box on the bottom of the second window see the screenshot. For instance, the source code below was used to create the following example application. By using, distributing, or contributing to this project, you agree to the terms and conditions of this license.

Commercial entities using NanoGUI should consult the proper legal counsel for how to best adhere to the attribution clause of the license. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit e9ec8a1 Sep 22, Horizontal, BoxLayout. You signed in with another tab or window. Reload to refresh your session.


Comments

Leave a Reply

Your email address will not be published. Required fields are marked *