Matyasf.Perlin 1.1.1

Perlin

Perlin (named from a bird) is a lightweight 2D graphics engine for .NET Core using Veldrid. It's well documented, has a simple architecture and is meant to be more as a base code for your engine than something that does everything out-of-the-box. Currently its working on Windows and OSX, in the near future I plan to get it work on Linux, Android and iOS.

Features

• Thanks for Veldrid it automatically chooses the ideal rendering backend for your PC (Vulkan/Metal/OpenGL/DirectX..)
• Loads images via ImageSharp, so common formats (jpg, png, bmp, gif) are supported.
• Uses the display tree concept (see below) to render your scene.
• Mouse and keyboard handling code included.
• Desktop rendering using Veldrid and SDL2.
• Can display parts of image regions as a simple texture atlas support.

The display tree

Perlin puts the objects to render in a display tree similar to other rendering engines (HTML rendering, Android'd UI, Microsoft's WPF,..). The root of the display tree (called Stage) has children, these can also have children and so on creating a tree data structure. Every object in the display tree is a subclass of DisplayObject, here lie the common properties, like width, height, rotation,... Transformations in the display tree are cumulative, e.g. if you set the transparency/rotation/position/scale of an object its every descendant (child, grandchild,..) will be affected as well.

The Z-order (what is rendered in front of what) is determined based on the position of the display tree. An object will be always behind its children; the order between the children is that the first child will be in the back and the last one in the front.

License

Copyright 2020- Matyas Forian Szabo and code contributors

Licensed under the Apache License, Version 2.0 (the "License"); you may not use files in this project except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.