![]() Raster images hold quite a lot of information. This gives businesses another reason to use them in their promotional content. Vector images also have the tendency to stand out with their attractive use of color, texture, depth, and layers. This makes them perfect for businesses looking to create material such as logos, brochures, merchandise, and so on. Vector images are relatively easier to copy. Hence, they need to make sure their illustrations are scalable and can be enlarged or reduced in size as needed.Īpart from offering flexibility in terms of scalability, vector graphics also provide ease in duplication. This material can include everything from billboards to posters and business cards. Because of this feature, vector graphics are the primary choice for businesses when they need to design material for marketing campaigns. Vector images, unlike rasters, can be indefinitely scaled and still retain their quality. Instead of thinking about 2D rendering as a reduced set of 3D rendering, I would encourage you to consider 3D rendering as the result of carefully constructed 2D elements.Adobe Illustrator is the industry standard for vector graphic creation. There are also a number of operations that work specifically on a 2d raster such as drawing sprites. This can result in performance improvements due to reduced computation and has the added benefit of simplifying the source code. When using OpenGL for 2D, many of the pipeline operations typically used for 3D rendering can be ignored. Lighting and shading, viewport transforms, and depth queries are some of the operations used to create the illusion of 3D. These visual clues are implemented as computations at various stages of the graphics pipeline. Perceptions of the 3rd dimension is achieved through visual clues such as lighting, far object appearing smaller then near objects, and near objects occluding far objects. While OpenGL is a great tool for 3D rendering it is important to understand that at the end of the day the output medium is inherently 2D. One final thing to figure out is a good designer to developer workflow when dealing with Vector images, i.e., how do I take an icon created in Illustrator and turn that into a QGraphicsItem - this might be a good candidate for a new (more focused) question. I spent some time this weekend with Qt and have discovered QGraphicsScene class - which seems to be the fundamental class for Qt's 2D retained type graphics mode - and QGraphicsWidget which allows some auto-layout functionality of the QWidget class. If the blank can be filled that is what I am looking for. Are 2D graphics truly 2D or are they simply 3D objects drawn on a plane oriented to look 2D? Also, I am unclear about 2D graphics in OpenGL. I just don't know if such a thing exists. Most likely what this would be is a framework built on top of OpenGL. ![]() Also, I am not sure if Qt has an animation framework? Thoughts here? I am not interested in Qts window management (there are no windows) or widget / control set as it is not for a desktop type application. Qt is probably too heavy-weight, but I am not familiar enough with the API to know if it would meet the requirements. This is not for a game, but I am not opposed to using a game type API. ![]() Package size - can it run in an embedded environment?.Raster compositing + support for opacity masks - hardware accelerated of course.For 2D objects only (though 3D transforms of these 2D objects is of interest).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |