BGRABitmap tutorial

From Free Pascal wiki
Jump to: navigation, search

Deutsch (de) | English (en) | Français (fr) | Español (es) | Edit

Home | Tutorial 1 | Tutorial 2 | Tutorial 3 | Tutorial 4 | Tutorial 5 | Tutorial 6 | Tutorial 7 | Tutorial 8 | Tutorial 9 | Tutorial 10 | Tutorial 11 | Tutorial 12 | Tutorial 13 | Tutorial 14 | Tutorial 15 | Tutorial 16 | Edit

Welcome to the index of the tutorials for the BGRABitmap library. You can browse tutorials by number with the bar on the top, or by the following categories:

Install BGRABitmap and draw basic shapes

TBGRABitmap images have drawing functions using floating point coordinates or integer coordinates.

Textures and scanners

Pixels are a table in memory containing values in the TBGRAPixel format. At this level, we can do various operations:

Other drawing contexts

It is possible to have other contexts, that provide/allow other basic drawing functions:

More

You can use BGRABitmap to improve TAChart rendering.

More classes are available (you need to create them when you need them):

  • TBGRATextEffect, in unit BGRATextFX, allows to prepare the drawing of text line, to add effects like contour and shadow.
  • TBGRALayeredBitmap, in unit BGRALayers, allow to create a multi-layered bitmap. Units BGRAPaintNet and BGRAOpenRaster contain implementations to read and write in Paint.NET format (read only) and OpenRaster format (read and write).
  • Units BGRAGradientScanner and BGRATransform contain scanners to do various effects.
  • Unit BGRAGradients contain procedures to generate gradients and TPhongShading class for Phong shading.
  • TBGRACompressableBitmap, in unit BGRACompressableBitmap, allow to store and compress images.

Other units contient low level functions, and you should not need to use them for a normal usage.