VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 123[4]5678910 ]


[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 06:21:43 11/05/02 Tue
Author: Michel
Subject: Re: Drawing speed
In reply to: Chris 's message, "Drawing speed" on 04:31:27 11/04/02 Mon


Hi Chris,

The fastest, but hardest way to access the pixels is the use the TDibGraphic.ScanLine property, but you need to know the layout of the bits based on the image format. There are some examples of this in EnTransf.Pas.

A compromise is to use the TDibGraphic.RGB property, which accesses the bits directly in memory with a slight overhead.

The slowest but most flexible is to use the TDibGraphic.Canvas, which has higher level routines such as circles, rectangles, etc...

Best regards,

Michel
>What is the fastest method to draw pixels and lines
>and to check if a pixel is set (black) or not (white).
>Chris

[ Next Thread | Previous Thread | Next Message | Previous Message ]


Replies:


[ Contact Forum Admin ]


Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.