[BUG] Particle Size in Percentage Mode loses Aspect ratio

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JohnnyMeek

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Joined: 23rd Apr 2013

Location: Slovenia

Posted: 13th Mar 2017 11:55

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The particle size uses an incorrect aspect ratio for the image if you use the percentage system.

This has been like this for a while, and it's as I started on a new particle system that I remembered about it.

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Markus

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Posted: 13th Mar 2017 12:09

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the last version (before v2017.02.28) did not have this problem.
can you provide an example?
is your original image a square?

+ Code Snippet

rem
rem AGK Application 2017.01.09
rem MR
 
SetWindowSize(1000,500,0)
SetVirtualResolution(100,100)
SetWindowAllowResize(1)

p=CreateParticles(50,50)

img = LoadImage("test.bmp")

SetParticlesImage(p,img)
SetParticlesSize(p,3) 
 
do
	
	UpdateParticles(p,0)

	if GetPointerPressed() then exit

	sync()
	
loop

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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JohnnyMeek

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Joined: 23rd Apr 2013

Location: Slovenia

Posted: 13th Mar 2017 12:31

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Narrowed it down to the rotation.

If you add the following line, your image will become a rectangle.

SetParticlesRotationRange ( p, 0,360 )

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Markus

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Posted: 13th Mar 2017 14:58

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Quote: "SetParticlesRotationRange ( p, 0,360 )
"

not at 2017.01.09, but i will test at home.

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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Markus

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Posted: 14th Mar 2017 19:04

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no problem here

+ Code Snippet

rem
rem AGK Application 2017.02.28, Player 27 Feb 2017
rem MR

SetWindowSize(1000,500,0)
SetVirtualResolution(100,100)
SetWindowAllowResize(1)
 
p=CreateParticles(50,50)
 
img = LoadImage("block.png")
 
SetParticlesImage(p,img)
SetParticlesSize(p,3) 

SetParticlesRotationRange ( p, 0,360 )
  
do
     
    UpdateParticles(p,0)
 
    if GetPointerPressed() then exit
 
    sync()
     
loop

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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JohnnyMeek

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Joined: 23rd Apr 2013

Location: Slovenia

Posted: 15th Mar 2017 10:48

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I missed a bit, try this..

+ Code Snippet

rem
rem AGK Application 2017.01.09
rem MR
SetWindowSize( 1024, 768, 0 )

// set display properties
SetDisplayAspect ( -1 )
SetOrientationAllowed( 1, 1, 1, 1 )
SetSyncRate( 60, 1)  
 
p=CreateParticles(50,50)
 
img = 0 // LoadImage("test.bmp")
 
SetParticlesImage(p,img)
SetParticlesSize(p,10) 
SetParticlesLife ( p, 10 )
 SetParticlesRotationRange ( p, 0,10)
do
     
    //UpdateParticles(p,0)
 
    if GetPointerPressed() then exit
 
    sync()
     
loop

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Markus

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Joined: 10th Apr 2004

Location: Germany

Posted: 15th Mar 2017 11:03 Edited at: 15th Mar 2017 11:04

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doku said

Quote: "Use an aspect ratio of -1 to use the device aspect ratio (fills the whole screen without black borders, but will cause stretching and look different on every device)"

i think SetVirtualResolution is a must have.

this is square

+ Code Snippet

rem
rem AGK Application 2017.01.09
rem MR
SetWindowSize( 1024, 768, 0 )
 
SetVirtualResolution(100,100) 
// set display properties
//SetDisplayAspect ( -1 ) 
SetOrientationAllowed( 1, 1, 1, 1 )
SetSyncRate( 60, 1)  
  
p=CreateParticles(50,50)
  
img = 0 // LoadImage("test.bmp")
  
SetParticlesImage(p,img)
SetParticlesSize(p,10) 
SetParticlesLife ( p, 10 )
 SetParticlesRotationRange ( p, 0,10)
do
      
    //UpdateParticles(p,0)
  
    if GetPointerPressed() then exit
  
    sync()
      
loop

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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JohnnyMeek

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Joined: 23rd Apr 2013

Location: Slovenia

Posted: 15th Mar 2017 12:26

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There is still a difference in the aspect ratio of the particle if you use any Rotation setting, which is weird.

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Paul Johnston

TGC Developer

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Joined: 16th Nov 2002

Location: United Kingdom

Posted: 16th Mar 2017 17:51

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Thanks, fixed for the next version. Although I highly recommend using a virtual resolution to avoid the complicated math behind the percentage based system.

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JohnnyMeek

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Joined: 23rd Apr 2013

Location: Slovenia

Posted: 17th Mar 2017 12:29

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Thanks for the fix. I've built so much of my core stuff around the percentage system, there's no going back.

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AppGameKit Classic Chat / [BUG] Particle Size in Percentage Mode loses Aspect ratio