image, color, CGI

Blitz3D Forums/Blitz3D Programming/image, color, CGI

jtassinari

(Posted 2010) [#1]

Hi there,

i have a little question. I am working on an application that should create a wide image built with littler one. To make it easey the ending point should look like a x*y (varialbe size) image looking like a chess table.
The problem is that each square of the image sould be loaded as an image (a basic pattern) and should be of a specific color.

it could be like a matrix M0[ [RGB], M1 [R,C] ] for each x,y sub-image i have a different color.

By now i have been able to create the main image detect rows and columns ammount, load and scale the subset of images required, givin the correct x & y,... but can i apply a color to an image???
Does anyone know if i can use a CGI (php scrpt)? any exemple around?

thanks indeed
(please excuse my mad engish :D )

jTassinari

jtassinari

(Posted 2010) [#2]

one more question, trying to understand what i should better do...

are LoadImage, CreateImage generating an entity?

how can i handel an image? should i better use a Sprite?

thanks everyone,

cheers,

jT

Warner

(Posted 2010) [#3]

I don't think you can filter default 2d images with any of the built-in commands. You can parse the image's pixels, and change them. (readpixel/writepixel)
Alternatively, you can use 3D commands to do this:

;set up graphics
Graphics3D 800, 600, 0, 2
SetBuffer BackBuffer()
Flip

;create image
im = MakeImage()
SaveImage im, "Test.bmp" ;save to disk

;create 'sprite' (used cube instead of sprite, due to sprite issues)
sprite = CreateCube()
ScaleMesh sprite, 1, 1, 0.01 ;make flat
EntityTexture sprite, LoadTexture("Test.bmp") ;load texture
EntityFX sprite, 1 ;set fullbright

DeleteFile "Test.bmp" ;remove image from disk

;create camera
cam = CreateCamera()
MoveEntity cam, 0, 0, -15

;turn off auto-cls camera
CameraClsMode cam, False, True

;clear screen before drawing
Cls

;draw 'sprite' onto screen a few times
For i = -4 To 4
For j = -3 To 3
	EntityColor sprite, Rand(255), Rand(255), Rand(255) ;set color
	PositionEntity sprite, i*2, j*2, 0 ;set position
	RenderWorld ;render
Next
Next

;create large image
im = CreateImage(800, 600)
GrabImage im, 0, 0 ;copy screen to image

;main loop to show image
Repeat

	Cls
	DrawImage im, 0, 0 ;draw big image
	Flip
	
Until KeyHit(1) ;esc = end

End

;generate random b/w image
Function MakeImage()
	
	Color 255,255,255
	Rect 0, 0, 128, 128
	Color 0, 0, 0
	Line 0, 0, 128, 128
	Line 128, 0, 0, 128
	Rect 0, 0, 128, 128, 0
	Rect 32, 32, 64, 64, 0
	
	im = CreateImage(128, 128)
	GrabImage im, 0, 0
	
	Return im
	
End Function

Last edited 2010

Yasha

(Posted 2010) [#4]

should i better use a Sprite?

Sprites are slow. Better to use a singe-surface solution. Many of these have already been made, e.g.:

http://www.blitzbasic.com/Community/posts.php?topic=92270

jtassinari

(Posted 2010) [#5]

Thnaks Warner,

I already use ReadPixel to get 3 arrais of rgb values,
they areread from a wool strem. Then i have some more params to get as wool-knote, knote size(H*W), Knote Consume Len, and Required Pattter to obtain.

Strange but true B3D is proving to be a bettere solution for this stupid industrial beta then MS Studio...

Thanks Yasha, It's ok, sprite are slower, but i'm not going for preformance now, i'm try to get correct computation and to obtain a bpm/pict. Actually i'm using a frame rate of 10 fps, 1 min to load the array color from a sample, and so on.

The pattern i Load is a png/bmp of a wool-knote. at the and i should obtain something like what's here...

[img http://www.absolute-line.net/http://www.absolute-line.net/wp-content/uploads/2010/10/04-Merinos_Nm2500_lowRes-300x155.jpg]

thanks =)
cheers,

JT

Last edited 2010

Last edited 2010

Last edited 2010