Difference between revisions of "Pixel:setTexture"

From GiderosMobile
(removed language stuff)
(Undo revision 23108 by MoKaLux (talk))
Tag: Undo
 
(8 intermediate revisions by 2 users not shown)
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=== Description ===
 
=== Description ===
−
Associates a texture to the pixel.
+
Associates a texture to the Pixel.
−
<source lang="lua">
+
<syntaxhighlight lang="lua">
 
Pixel:setTexture(texture,slot,matrix)
 
Pixel:setTexture(texture,slot,matrix)
−
</source>
+
</syntaxhighlight>
 +
 
 +
'''Please note: slot is only useful in conjonction with Shader'''
  
 
=== Parameters ===
 
=== Parameters ===
Line 13: Line 15:
 
'''slot''': (number) the texture slot that the texture should be associated to. Leave empty or set to 0 for main texture, or if you don't use a specific shader '''optional'''<br/>
 
'''slot''': (number) the texture slot that the texture should be associated to. Leave empty or set to 0 for main texture, or if you don't use a specific shader '''optional'''<br/>
 
'''matrix''': (Matrix) an optional transform for the texture '''optional'''<br/>
 
'''matrix''': (Matrix) an optional transform for the texture '''optional'''<br/>
 +
 +
=== Examples ===
 +
'''2 textures masked in a Pixel'''
 +
<syntaxhighlight lang="lua">
 +
--!NEEDS:luashader/luashader.lua
 +
application:setBackgroundColor(0x909090)
 +
 +
function vshaderpixslot(vVertex,vColor,vTexCoord) : Shader
 +
local vertex = hF4(vVertex,0.0,1.0)
 +
fTexCoord = vTexCoord
 +
return vMatrix*vertex
 +
end
 +
function fshaderpixslot() : Shader
 +
local frag = texture2D(fTexture, fTexCoord)
 +
local frag2 = texture2D(fTexture2, fTexCoord)
 +
return frag * frag2 -- mask
 +
end
 +
 +
local shaderpixslot=Shader.lua(vshaderpixslot,fshaderpixslot,0,
 +
{
 +
{name="vMatrix", type=Shader.CMATRIX, sys=Shader.SYS_WVP, vertex=true},
 +
{name="fTexture", type=Shader.CTEXTURE, vertex=false},
 +
{name="fTexture2", type=Shader.CTEXTURE, vertex=false},
 +
},
 +
{
 +
{name="vVertex", type=Shader.DFLOAT, mult=2, slot=0, offset=0},
 +
{name="vColor", type=Shader.DUBYTE, mult=4, slot=1, offset=0},
 +
{name="vTexCoord", type=Shader.DFLOAT, mult=2, slot=2, offset=0},
 +
},
 +
{
 +
{name="fTexCoord", type=Shader.CFLOAT2},
 +
}
 +
)
 +
 +
local tex=Texture.new("gfx/test.png")
 +
local tex2=Texture.new("gfx/arrow_0001.png")
 +
local texw, texh = tex:getWidth(), tex:getHeight()
 +
 +
local px = Pixel.new(nil, texw, texh)
 +
px:setTexture(tex, 0)
 +
px:setTexture(tex2, 1)
 +
px:setShader(shaderpixslot)
 +
 +
stage:addChild(px)
 +
</syntaxhighlight>
 +
 +
'''Change Pixel Texture slots on mouse hover'''
 +
<syntaxhighlight lang="lua">
 +
--!NEEDS:luashader/luashader.lua
 +
 +
-- bg
 +
application:setBackgroundColor(0x00007f)
 +
 +
-- shader
 +
function vshaderpixelslot(vVertex, vColor, vTexCoord) : Shader
 +
local vertex = hF4(vVertex, 0.0, 1.0)
 +
fTexCoord = vTexCoord
 +
return vMatrix*vertex
 +
end
 +
function fshaderpixelslot() : Shader
 +
local frag = texture2D(fTexture, fTexCoord)
 +
local frag2 = texture2D(fTexture2, fTexCoord)
 +
if slot == 0 then return frag
 +
else return frag2
 +
end
 +
end
 +
 +
local shaderpixelslot=Shader.lua(vshaderpixelslot, fshaderpixelslot, 0,
 +
{
 +
{name="vMatrix", type=Shader.CMATRIX, sys=Shader.SYS_WVP, vertex=true},
 +
{name="fTexture", type=Shader.CTEXTURE, vertex=false},
 +
{name="fTexture2", type=Shader.CTEXTURE, vertex=false},
 +
{name="slot", type=Shader.CINT, vertex=false},
 +
},
 +
{
 +
{name="vVertex", type=Shader.DFLOAT, mult=2, slot=0, offset=0},
 +
{name="vColor", type=Shader.DUBYTE, mult=4, slot=1, offset=0},
 +
{name="vTexCoord", type=Shader.DFLOAT, mult=2, slot=2, offset=0},
 +
},
 +
{
 +
{name="fTexCoord", type=Shader.CFLOAT2},
 +
}
 +
)
 +
 +
-- textures
 +
local texbtnup=Texture.new("gfx/ui/btn_01_up.png")
 +
local texbtndown=Texture.new("gfx/ui/btn_01_down.png")
 +
 +
-- objects
 +
local px = Pixel.new(texbtnup)
 +
-- params
 +
px:setTexture(texbtndown, 1) -- texture, slot
 +
px:setShader(shaderpixelslot)
 +
-- position
 +
px:setPosition(8*4, 8*16)
 +
-- order
 +
stage:addChild(px)
 +
 +
-- listeners
 +
local onenter, moving, onexit
 +
px:addEventListener(Event.MOUSE_HOVER, function(ev)
 +
if px:hitTestPoint(ev.x, ev.y, true) then -- enter
 +
-- execute code only once *
 +
onenter = not onenter
 +
if not onenter then moving = true end
 +
if not moving then
 +
-- execute action only once
 +
px:setShaderConstant("slot", Shader.CINT, 1, 1) -- button Down texture
 +
else
 +
onexit = true
 +
end
 +
ev:stopPropagation()
 +
else -- exit
 +
onenter = false
 +
moving = false
 +
if onexit then
 +
-- execute exit action only once
 +
onexit = false
 +
px:setShaderConstant("slot", Shader.CINT, 1, 0) -- button Up texture
 +
end
 +
end
 +
end)
 +
</syntaxhighlight>
  
 
{{Pixel}}
 
{{Pixel}}

Latest revision as of 12:29, 25 November 2023

Available since: Gideros 2016.12
Class: Pixel

Description

Associates a texture to the Pixel. 

Pixel:setTexture(texture,slot,matrix)

Please note: slot is only useful in conjonction with Shader

Parameters

texture: (TextureBase or TextureRegion) the texture to associate to the pixel, or nil to deassociate
slot: (number) the texture slot that the texture should be associated to. Leave empty or set to 0 for main texture, or if you don't use a specific shader optional
matrix: (Matrix) an optional transform for the texture optional

Examples

2 textures masked in a Pixel 

--!NEEDS:luashader/luashader.lua
application:setBackgroundColor(0x909090)

function vshaderpixslot(vVertex,vColor,vTexCoord) : Shader
	local vertex = hF4(vVertex,0.0,1.0)
	fTexCoord = vTexCoord
	return vMatrix*vertex
end
function fshaderpixslot() : Shader
	local frag = texture2D(fTexture, fTexCoord)
	local frag2 = texture2D(fTexture2, fTexCoord)
	return frag * frag2 -- mask
end

local shaderpixslot=Shader.lua(vshaderpixslot,fshaderpixslot,0,
	{
	{name="vMatrix", type=Shader.CMATRIX, sys=Shader.SYS_WVP, vertex=true},
	{name="fTexture", type=Shader.CTEXTURE, vertex=false},
	{name="fTexture2", type=Shader.CTEXTURE, vertex=false},
	},
	{
	{name="vVertex", type=Shader.DFLOAT, mult=2, slot=0, offset=0},
	{name="vColor", type=Shader.DUBYTE, mult=4, slot=1, offset=0},
	{name="vTexCoord", type=Shader.DFLOAT, mult=2, slot=2, offset=0},
	},
	{
	{name="fTexCoord", type=Shader.CFLOAT2},
	}
)

local tex=Texture.new("gfx/test.png")
local tex2=Texture.new("gfx/arrow_0001.png")
local texw, texh = tex:getWidth(), tex:getHeight()

local px = Pixel.new(nil, texw, texh)
px:setTexture(tex, 0)
px:setTexture(tex2, 1)
px:setShader(shaderpixslot)

stage:addChild(px)

Change Pixel Texture slots on mouse hover 

--!NEEDS:luashader/luashader.lua

-- bg
application:setBackgroundColor(0x00007f)

-- shader
function vshaderpixelslot(vVertex, vColor, vTexCoord) : Shader
	local vertex = hF4(vVertex, 0.0, 1.0)
	fTexCoord = vTexCoord
	return vMatrix*vertex
end
function fshaderpixelslot() : Shader
	local frag = texture2D(fTexture, fTexCoord)
	local frag2 = texture2D(fTexture2, fTexCoord)
	if slot == 0 then return frag
	else return frag2
	end
end

local shaderpixelslot=Shader.lua(vshaderpixelslot, fshaderpixelslot, 0,
	{
	{name="vMatrix", type=Shader.CMATRIX, sys=Shader.SYS_WVP, vertex=true},
	{name="fTexture", type=Shader.CTEXTURE, vertex=false},
	{name="fTexture2", type=Shader.CTEXTURE, vertex=false},
	{name="slot", type=Shader.CINT, vertex=false},
	},
	{
	{name="vVertex", type=Shader.DFLOAT, mult=2, slot=0, offset=0},
	{name="vColor", type=Shader.DUBYTE, mult=4, slot=1, offset=0},
	{name="vTexCoord", type=Shader.DFLOAT, mult=2, slot=2, offset=0},
	},
	{
	{name="fTexCoord", type=Shader.CFLOAT2},
	}
)

-- textures
local texbtnup=Texture.new("gfx/ui/btn_01_up.png")
local texbtndown=Texture.new("gfx/ui/btn_01_down.png")

-- objects
local px = Pixel.new(texbtnup)
-- params
px:setTexture(texbtndown, 1) -- texture, slot
px:setShader(shaderpixelslot)
-- position
px:setPosition(8*4, 8*16)
-- order
stage:addChild(px)

-- listeners
local onenter, moving, onexit
px:addEventListener(Event.MOUSE_HOVER, function(ev)
	if px:hitTestPoint(ev.x, ev.y, true) then -- enter
		-- execute code only once *
		onenter = not onenter
		if not onenter then moving = true end
		if not moving then
			-- execute action only once
			px:setShaderConstant("slot", Shader.CINT, 1, 1) -- button Down texture
		else
			onexit = true
		end
		ev:stopPropagation()
	else -- exit
		onenter = false
		moving = false
		if onexit then
			-- execute exit action only once
			onexit = false
			px:setShaderConstant("slot", Shader.CINT, 1, 0) -- button Up texture
		end
	end
end)



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