Can someone help me understand what's going on in this co-ordinate system?

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blink0k

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Posted: 10th Mar 2017 02:46 Edited at: 10th Mar 2017 02:48

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i get the attached screen from this code

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// Project: resize 
// Created: 2017-03-10

// show all errors
SetErrorMode(2)

// set window properties
SetWindowTitle( "resize" )
SetWindowSize( 1024, 768, 0 )
SetScissor(0, 0, 0, 0)
SetWindowAllowResize(1)

// set display properties
SetVirtualResolution( -1, -1 )

square = LoadSprite("square.png")

do
    Print("FPS="+str(ScreenFPS()))	
	print("Window Width:Height="+str(1024)+":"+str(768))
	print("Get bounds Left:Right=Total="+str(GetScreenBoundsLeft())+":"+str(GetScreenBoundsRight())+"="+str(abs(GetScreenBoundsLeft())+GetScreenBoundsRight()))    
	print("Get bounds Top:Bottom=Total="+str(GetScreenBoundsTop())+":"+str(GetScreenBoundsBottom())+"="+str(abs(GetScreenBoundsTop())+GetScreenBoundsBottom()))    
    print("Virtual Width:Height="+str(GetVirtualWidth())+":"+str(GetVirtualHeight()))

	print("My guess="+str(1024 * (abs(GetScreenBoundsLeft()) + GetScreenBoundsRight())))
    
    Sync()
loop

The big blue area is a 10x10 pixel square???? (attached)

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Stab in the Dark software

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Posted: 10th Mar 2017 03:34

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Please elaborate. What is the point of this code?

The coffee is lovely dark and deep,and I have code to write before I sleep.

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blink0k

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Posted: 10th Mar 2017 06:35

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What i want to do is access the window pixel for pixel. No percentage scaling

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Markus

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Posted: 10th Mar 2017 10:02

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-1,-1 did not work, it is also not in online help.
SetVirtualResolution( 1024, 768 )

AGK (Steam) V2017.02.28 : Windows 10 Pro 64 Bit : AMD (17.2.1) Radeon R7 265 : Mac mini OS Sierra (10.12.2)

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Stab in the Dark software

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Posted: 10th Mar 2017 14:18

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Quote: "What i want to do is access the window pixel for pixel. No percentage scaling"

Why? Elaborate.

The coffee is lovely dark and deep,and I have code to write before I sleep.

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Phaelax

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Posted: 10th Mar 2017 16:12

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The why should not matter.

SetScissor(0, 0, 0, 0) is pointless there because all that does is turn off clipping. And since it's not been used anywhere else....

I'm not sure what you were trying to do with SetVirtualResolution( -1, -1 ) but you need an actual resolution value there. Like Markus said, try 1024x768.

"I like offending people, because I think people who get offended should be offended." - Linus Torvalds

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Stab in the Dark software

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Posted: 10th Mar 2017 17:10

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Quote: "The why should not matter."

Yes it does. He needs to elaborate.

The coffee is lovely dark and deep,and I have code to write before I sleep.

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CJB

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Posted: 10th Mar 2017 17:18

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The answer is to just set your virtual resolution to the same size as your window right? If your window is 1024x768, and you want a pixel for pixel coordinate system, then set the virutal resolution to 1024x768 too. No need to elaborate.

Aaargh! Ducks!
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Stab in the Dark software

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Posted: 10th Mar 2017 20:36

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Yes, he still needs to elaborate what he is trying to do and why.
As he is already an app dev I am sure it would not be too much trouble
for him to elaborate. Obviously he knows he SetVirtualResolution to -1s.
The question is why?

The coffee is lovely dark and deep,and I have code to write before I sleep.

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blink0k

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Posted: 10th Mar 2017 21:57

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On the setvirtualresolution() issue i have seen in another thread that they have used it

Ok so i have a tile editor. I want the user to be able to drag the window to resize it and it shows more of the level.
also in game it would be good to just show more of the level for different resolutions

like this

Start with this;

User resizes the window;

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Phaelax

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Posted: 11th Mar 2017 05:01

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Oh, that's completely different!

Try this, it worked for me:

+ Code Snippet

SetWindowSize( 1024, 768, 0 )
SetWindowAllowResize(1)


lastWidth = 1024
lastHeight = 768

do

	if lastWidth <> GetDeviceWidth() or lastHeight <> GetDeviceHeight()
		lastWidth = GetDeviceWidth()
		lastHeight = GetDeviceHeight()
		setVirtualResolution(lastWidth, lastHeight)
	endif
    Sync()
loop

"I like offending people, because I think people who get offended should be offended." - Linus Torvalds

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blink0k

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Posted: 11th Mar 2017 21:12

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Superb!!! Thanks heaps phaelax. Exactly what i want

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Phaelax

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Posted: 11th Mar 2017 23:00

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I was actually surprised at how well it worked myself

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blink0k

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Posted: 12th Mar 2017 00:03

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I can even resize the window across multiple monitors which is what i was really hoping for

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Stab in the Dark software

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Posted: 12th Mar 2017 01:54

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See what happens when you explain what you were trying to do.

The coffee is lovely dark and deep,and I have code to write before I sleep.

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blink0k

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Posted: 12th Mar 2017 03:16

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haha. too true. thanks

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AppGameKit Classic Chat / Can someone help me understand what's going on in this co-ordinate system?

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