A birdcage (or bird cage) is a cage designed to house birds as pets. Antique (or antique-style) birdcages are often popular as collectors' items or as household decor but most are not suitable for housing live birds, being too small, or of unsafe materials or construction.ood quality cages designed for pet birds are more suitable. Most parrot cages are made or wrought iron and painted with a non-toxic paint referred to as powder-coating. However, the newest trend in the market is cages made of solid stainless steel.
A viewport is a 2D rectangle that defines the size of the rendering surface onto which a 3D scene is projected.
Move And Scale SVG Graphics With The viewBox Attribute. The SVG canvas and the SVG viewport, through which you see the canvas operate on independent coordinate systems. The systems are aligned by default, but you can change the default to move and scale the canvas. Last week I began a look at the SVG coordinate system, the infinite SVG canvas,and the SVG viewport.