Adding vertices to Shadowcaster()

[Richard BetsonParticipant]

How do I add vertices to a shadow caster?

Thanks

[Mark SiblyKeymaster]

ShadowCaster is currently just a simple container for vertices, it doesn’t really ‘manage’ them.

So you can add vertices by doing something like:

Monkey

Local verts:=new Stack<float> verts.Push(...) verts.Push(...) verts.Push(...) verts.Push(...) Local shadowCaster:=New ShadowCaster( verts.ToArray() ) ...if we need to change them later... shadowCaster.Vertices=verts.ToArray()

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Local verts:=new Stack<float> verts.Push(...) verts.Push(...) verts.Push(...) verts.Push(...) Local shadowCaster:=New ShadowCaster( verts.ToArray() ) ...if we need to change them later... shadowCaster.Vertices=verts.ToArray()

I guess it could include a stack, but this would just be ‘deadweight’ once the app was running, unless apps have a need to add vertices in realtime?

[Richard BetsonParticipant]

I’ll give that a try. Thanks.

[Richard BetsonParticipant]

Hi,

I am having a little difficulty getting the above to work. I’ve modified the simplelight demo to try and use the method (see method New() ) above but cant seem to figure it out. Below is what I’m up to.

 

Monkey

Namespace myapp #Import "<std>" #Import "<mojo>" #Import "Slate Tiles II_D.png" #Import "Slate Tiles II_N.png" #Import "Slate Tiles II_S.png" #Import "pointlight_light.png" #Import "Monkey2-logo-48.png" Using std.. Using mojo.. Class MyWindow Extends Window Field _floor:Image Field _light:Image Field _logo:Image Field _shadowcaster:ShadowCaster 'Added for this test Method New() ClearColor=Color.Black _floor=Image.LoadBump( "asset::Slate Tiles II_D.png","asset::Slate Tiles II_N.png","asset::Slate Tiles II_S.png",.5,True ) _light=Image.LoadLight( "asset::pointlight_light.png" ) _light.Handle=New Vec2f( .5 ) _light.Scale=New Vec2f( 3 ) _logo=Image.Load( "asset::Monkey2-logo-48.png" ) _logo.Handle=New Vec2f( .5 ) '_logo.ShadowCaster=New ShadowCaster( _logo.Width/2,20 ) '------------------- 'Add vertices ?? '------------------- Local verts:=New Stack<Float> verts.Push(0.0) verts.Push(0.0) verts.Push(32.0) verts.Push(0.0) verts.Push(32.0) verts.Push(32.0) verts.Push(0.0) verts.Push(32.0) _logo.ShadowCaster=New ShadowCaster( verts.ToArray() ) Self._shadowcaster=New ShadowCaster(verts.ToArray() ) 'Self._shadowcaster.Vertices=New Vec2(verts.ToArray()) '------------------- End Method OnRender( canvas:Canvas ) Override App.RequestRender() canvas.AmbientLight=Color.DarkGrey canvas.BeginLighting() canvas.AddLight( _light,Mouse.X,Mouse.Y ) For Local x:=0 Until Width Step _floor.Width For Local y:=0 Until Height Step _floor.Height canvas.DrawImage( _floor,x,y ) Next Next For Local an:=0.0 Until TwoPi Step TwoPi/8.0 canvas.DrawImage( _logo,Width/2+Cos( an ) * Width/4,Height/2 + Sin( an ) * Height/4 ) Next canvas.EndLighting() canvas.DrawText( App.FPS,Width/2,0,.5,0 ) End End Function Main() New AppInstance New MyWindow App.Run() End

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Namespace myapp   #Import "<std>" #Import "<mojo>"   #Import "Slate Tiles II_D.png" #Import "Slate Tiles II_N.png" #Import "Slate Tiles II_S.png" #Import "pointlight_light.png" #Import "Monkey2-logo-48.png"   Using std.. Using mojo..   Class MyWindow Extends Window       Field _floor:Image          Field _light:Image          Field _logo:Image          Field _shadowcaster:ShadowCaster     'Added for this test          Method New()              ClearColor=Color.Black              _floor=Image.LoadBump( "asset::Slate Tiles II_D.png","asset::Slate Tiles II_N.png","asset::Slate Tiles II_S.png",.5,True )                  _light=Image.LoadLight( "asset::pointlight_light.png" )                  _light.Handle=New Vec2f( .5 )              _light.Scale=New Vec2f( 3 )                  _logo=Image.Load( "asset::Monkey2-logo-48.png" )                  _logo.Handle=New Vec2f( .5 )                  '_logo.ShadowCaster=New ShadowCaster( _logo.Width/2,20 )             '-------------------         'Add vertices ??         '-------------------         Local verts:=New Stack<Float>         verts.Push(0.0)         verts.Push(0.0)         verts.Push(32.0)         verts.Push(0.0)         verts.Push(32.0)         verts.Push(32.0)         verts.Push(0.0)         verts.Push(32.0)           _logo.ShadowCaster=New ShadowCaster( verts.ToArray() )         Self._shadowcaster=New ShadowCaster(verts.ToArray() )         'Self._shadowcaster.Vertices=New Vec2(verts.ToArray())                  '-------------------              End          Method OnRender( canvas:Canvas ) Override              App.RequestRender()                  canvas.AmbientLight=Color.DarkGrey                  canvas.BeginLighting()                  canvas.AddLight( _light,Mouse.X,Mouse.Y )                  For Local x:=0 Until Width Step _floor.Width               For Local y:=0 Until Height Step _floor.Height                   canvas.DrawImage( _floor,x,y )               Next           Next                  For Local an:=0.0 Until TwoPi Step TwoPi/8.0                      canvas.DrawImage( _logo,Width/2+Cos( an ) * Width/4,Height/2 + Sin( an ) * Height/4 )                  Next                  canvas.EndLighting()                  canvas.DrawText( App.FPS,Width/2,0,.5,0 )     End      End   Function Main()       New AppInstance          New MyWindow          App.Run() End

[Mark SiblyKeymaster]

Ok, my mistake, you need to use an array of Vec2f’s – see below.

There is ‘help’ in there you know – pretty crappy, but clicking ‘F1’ on ShadowCaster a few times should bring up the ShadowCaster class.

 

Monkey

Local verts:=New Stack<Vec2f> verts.Push( New Vec2f( 0,0 ) ) verts.Push( New Vec2f( 32,0 ) ) verts.Push( New Vec2f( 32,32 ) ) verts.Push( New Vec2f( 0,32 ) ) _logo.ShadowCaster=New ShadowCaster( verts.ToArray() )

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Local verts:=New Stack<Vec2f>         verts.Push( New Vec2f( 0,0 ) )         verts.Push( New Vec2f( 32,0 ) )         verts.Push( New Vec2f( 32,32 ) )         verts.Push( New Vec2f( 0,32 ) )         _logo.ShadowCaster=New ShadowCaster( verts.ToArray() )

[Richard BetsonParticipant]

Thanks! That seems to work.

I had a look at the help (F1) but still was confused. I’ve been working with a lot of legacy code conversion and I’ve really not had the time to really get into some of Monkey 2’s new features and ways of doing things.  Much of it is still newish to me, but these little snippets, like the above, really go along way to getting a handle on it.

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