Solved

rotate Images

Posted on 2000-04-30
7
502 Views
Last Modified: 2010-04-04
Hello!

Again a message from me...
How can I rotate Images or other components??? I often searched a component for that but I never found once!
Please help?!!

Bye

Robert

PS: My english is bad!! - I know! - Sorry!!
I am very new in Delphi so I ask lots of questions... ;-)

PPS: What are pints?? Do I need this??? I don't know how to do that!
0
Comment
Question by:rowisoft
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 17

Expert Comment

by:inthe
ID: 2764485
you can buy points to ask questions with.
they are experts-exchange "currency" to ask questions with.
generally if you ask a question for 0 points it will not be answered unless someone is feeling generous ;-)

when someone leaves a comment that is helpful (or is good enough for answer) you can select the "accept comment as answer" button on top right of appropriate comment box.

http://www.efg2.com/lab/imageprocessing/RotateScanline.htm
0
 
LVL 17

Expert Comment

by:inthe
ID: 2764496
you should see here for details of how experts-exchange works:

http://www.experts-exchange.com/info/howto.htm

Regards Barry
0
 
LVL 1

Author Comment

by:rowisoft
ID: 2765305
Adjusted points from 0 to 50
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 1

Author Comment

by:rowisoft
ID: 2765311
Hello again from me!

The Question have points, now! Please give answers to "rotate Images" and you'll get the points...


Points: I filled out any form! then I hav 250 Points! How to get more, now??

Robert
0
 
LVL 3

Expert Comment

by:sburck
ID: 2765405
The TImage, TPicture and TBitmap components don't have (that I know of) any innate ability to rotate - however, there are packages which give this ability.  Leadtools VCL is one example.  In general, rotating a bitmap, is done by mapping every point to another point where (x,y) is multiplied by the conversion matrix

    cos a      sin a
  - sin a      cos a

(where a is the angle of rotation in radians) to give its new location.

This oversimplifies in a lot of cases, however, because this doesn't take into account things like resizing the canvas, etc.
0
 
LVL 3

Expert Comment

by:sburck
ID: 2765406
I looked at the question again, you mentioned images 'or other components'.  On the companion disk which comes with Delphi, there are the LMD and ABC components, which, among other things, have rotated labels and, I believe, other things like rotated button bars, etc.
0
 
LVL 2

Accepted Solution

by:
rene100 earned 50 total points
ID: 2765469
Hallo Robert! ;-)

Schau mal unter http://www.gnomehome.demon.nl/uddf/index.htm nach, (da findest du den Code um ein Bitmap um 90 oder 180 Grad zu rotieren......(Punkt 29.8 - Graphics)

oder halt, noch besser ist
http://www.efg2.com/Lab/ImageProcessing/RotateScanline.htm

René
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Controlled Assessment GCSE - desperate help needed 4 112
FMX and jaudiotracker playing memory stream 29 98
Base1 Encode/Decode 3 86
MS Access from Delphi 31 80
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question