Rotate an Object About a Point

You can rotate any object about a center using polar coordinates. Simply define your center Xo and Yo, which in this case is the center of a form. The amount of rotation is determined by direction, one degree:

 Private Direction As LongPrivate Xo As Long, Yo As LongPrivate Sub Form_Click()	If Direction = 1 Then		Direction = 359	'counterclockwise	Else		Direction = 1		'clockwise	End IfEnd SubPrivate Sub Form_Load()		Direction = 1		'clockwiseEnd SubPrivate Sub Form_Resize()	Xo = Me.ScaleWidth  2	Yo = Me.ScaleHeight  2End SubPrivate Sub Timer1_Timer()	Dim i  As Byte	Dim r As Single	Dim Pi As Single	Dim theta As Single	Dim plotx, ploty, dx, dy As Integer	Xo = Form1.Width / 2	'get center, image is to rotate about	Yo = Form1.Height / 2	Pi = 4 * Atn(1)	dx = Image1.Left - Xo	'get horizontal distance from center	dy = Image1.Top - Yo	' ""  vertical  ""	theta = Atn(dy / dx)	'get angle about center	r = dx / Cos(theta)	'get distance from center	plotx = r * Cos(theta + Direction * Pi / 180) + Xo	'get new x rotate about center	ploty = r * Sin(theta + Direction * Pi / 180) + Yo	'	""	y	""	Image1.Left = plotx	Image1.Top = plotyEnd Sub
Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

homes in the real estate industry

Exploring the Latest Tech Trends Impacting the Real Estate Industry

The real estate industry is changing thanks to the newest technological advancements. These new developments — from blockchain and AI to virtual reality and 3D printing — are poised to change how we buy and sell homes. Real estate brokers, buyers, sellers, wholesale real estate professionals, fix and flippers, and beyond may

man on floor with data

DevX Quick Guide to Data Ingestion

One of the biggest trends of the 21st century is the massive surge in internet usage. With major innovations such as smart technology, social media, and online shopping sites, the internet has become an essential part of everyday life for a large portion of the population. Due to this internet

payment via phone

7 Ways Technology Has Changed Traditional Payments

In today’s digital world, technology has changed how we make payments. From contactless cards to mobile wallets, it’s now easier to pay for goods and services without carrying cash or using a checkbook. This article will look at seven of the most significant ways technology has transformed traditional payment methods.