PixelTexture

PixelTexture creates a 2D-image texture map using a numeric array of pixel values. Texture maps have a 2D coordinate system (s, t) horizontal and vertical, with (s, t) values in range [0.0, 1.0] for opposite corners of the image.

Overview

PixelTexture
Hierarchy
Fields
Description
Example
Browser Compatibility
External Links

The PixelTexture node belongs to the Texturing component and its container field is texture. It is available since X3D version 3.0 or later.

Hierarchy

+ X3DNode

+ X3DAppearanceChildNode

+ X3DTextureNode

+ X3DTexture2DNode

+ PixelTexture

Fields

SFNode [in, out] metadata NULL [X3DMetadataObject]

Metadata are not part of the X3D world and not interpreted by the X3D browser, but they can be accessed via the ECMAScript interface.

SFImage [in, out] image 0 0 0

Defines image: width height number_of_components pixel_values. width and height are pixel count, number_of_components = 1 (intensity), 2 (intensity alpha), 3 (red green blue), 4 (red green blue alpha-opacity).

SFBool [ ] repeatS TRUE

Whether to horizontally repeat texture along S axis.

SFBool [ ] repeatT TRUE

Whether to vertically repeat texture along T axis.

SFNode [ ] textureProperties NULL [TextureProperties]

Field textureProperties.

Description

Hints

This is a good way to bundle image(s) into a single scene file, avoiding multiple downloads.
Can contain a single TextureProperties node.
Insert Shape and Appearance nodes before adding texture.

Warning

Aggregate file size can grow dramatically.

Example

PixelTexture

Downlod ZIP file

XML Encoding

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<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "http://www.web3d.org/specifications/x3d-3.3.dtd">

<head>

</head>

<Scene>

</ProtoInterface>

</ProtoInterface>

</ProtoBody>

</ProtoDeclare>

<PixelTexture DEF='_1'

image='8 8 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'>

<IS>

</IS>

</PixelTexture>

<Script DEF='CanvasScript'

directOutput='true'>

<IS>

</IS>

</ProtoInstance>

</field>

<IS>

</IS>

<![CDATA[ecmascript:

function set_array(value, time) {

// send out new picture

image_changed = new SFImage(data.size.x, data.size.y, data.components, value);

}

function color2int (value, alpha) {

color = (Math.floor(value.r * 0xFF) << 16) | (Math.floor(value.g * 0xFF) << 8) | Math.floor(value.b * 0xFF);

if (data.components == 4) color = (color << 8) | Math.floor(alpha * 0xFF);

return color;

}

function set_bgColor (value, time) { bgColor = color2int(value, data.opacity); }

function set_fgColor (value, time) { fgColor = color2int(value, data.opacity); }

function set_clear (value, time) {

// create new clean picture

array = new MFInt32();

for(j = 0; j < data.size.y; j++) {

for(k = 0; k < data.size.x; k++) {

i = j * data.size.x + k;

array[i] = bgColor;

}

data.array = array;

}

function set_size(value, time) {

if (data.array.length < value.x * value.y) {

array = new MFInt32();

for(j = 0; j < data.size.y; j++) {

for(k = 0; k < data.size.x; k++) {

i = j * data.size.x + k;

if (i < data.array.length) array[i] = data.array[i];

else array[i] = bgColor;

}

data.array = array;

return TRUE;

} else {

set_array(data.array, 1);

return FALSE;

}

function add_pixel (pixel1, pixel2) {

color = 0;

for (i = 0, s = 0; i < data.components; ++i, s = 8 * i) {

c1 = (pixel1 >>> s) & 0xff;

c2 = (pixel2 >>> s) & 0xff;

c = c1 + c2; if (c > 255) c = 255;

color |= (c << s);

}

return color;

}

function sub_pixel (pixel1, pixel2) {

color = 0;

for (i = 0, s = 0; i < data.components; ++i, s = 8 * i) {

c1 = (pixel1 >>> s) & 0xff;

c2 = (pixel2 >>> s) & 0xff;

c = c1 - c2; if (c < 0) c = 0;

color |= (c << s);

}

return color;

}

function mult_pixel (pixel1, pixel2) {

color = 0;

for (i = 0, s = 0; i < data.components; ++i, s = 8 * i) {

c1 = (pixel1 >>> s) & 0xff;

c2 = (pixel2 >>> s) & 0xff;

c = Math.floor((c1 * c2) / 65024);

color |= (c << s);

}

return color;

}

function div_pixel (pixel1, pixel2) {

color = 0;

for (i = 0, s = 0; i < data.components; ++i, s = 8 * i) {

c1 = (pixel1 >>> s) & 0xff;

c2 = (pixel2 >>> s) & 0xff;

c = Math.floor(c1 / c2);

color |= (c << s);

}

return color;

}

function avrg_pixel (pixel1, pixel2) {

o1 = pixel1 & 0xFF;

o2 = pixel2 & 0xFF;

o = o1 + o2; if (o > 255) o = 255;

color = o; o2 /= 255;

for (i = 1, s = 8 * i; i < data.components; ++i, s = 8 * i) {

c1 = (pixel1 >>> s) & 0xff;

c2 = (pixel2 >>> s) & 0xff;

c = Math.floor((c1 + c2) / 2);

color |= (c << s);

}

return color;

}

function brush_pixel (pixel1, pixel2) {

o1 = pixel1 & 0xFF;

o2 = pixel2 & 0xFF;

o = o1 + o2; if (o > 255) o = 255;

color = o; o2 /= 255;

for (i = 1, s = 8 * i; i < data.components; ++i, s = 8 * i) {

c1 = (pixel1 >>> s) & 0xff;

c2 = (pixel2 >>> s) & 0xff;

c = Math.floor(c1 + ((c2 - c1) * o2));

color |= (c << s);

}

return color;

}

function set_pixel(value) {

// color pixel using current foreground color

out = 0;

pixel = new SFVec2f(

value.x < 0 ? (data.horizontallyWrap ? value.x + data.size.x : out = 1 ) :

(value.x > data.size.x - 1 ? (data.horizontallyWrap ? value.x % data.size.x : out = 1 ) : value.x),

value.y < 0 ? (data.verticallyWrap ? value.y + data.size.y : out = 1 ) :

(value.y > data.size.y - 1 ? (data.verticallyWrap ? value.y % data.size.y : out = 1 ) : value.y)

);

if (out) return ;

if (data.combineMode == 'STAMP') data.array[pixel.y * data.size.x + pixel.x] = fgColor;

else if (data.combineMode == 'BRUSH') data.array[pixel.y * data.size.x + pixel.x] = brush_pixel(data.array[pixel.y * data.size.x + pixel.x], fgColor);

else if (data.combineMode == 'OR') data.array[pixel.y * data.size.x + pixel.x] |= fgColor;

else if (data.combineMode == 'XOR') data.array[pixel.y * data.size.x + pixel.x] ^= fgColor;

else if (data.combineMode == 'AND') data.array[pixel.y * data.size.x + pixel.x] &= fgColor;

else if (data.combineMode == 'ADD') data.array[pixel.y * data.size.x + pixel.x] = add_pixel(data.array[pixel.y * data.size.x + pixel.x], fgColor);

else if (data.combineMode == 'SUB') data.array[pixel.y * data.size.x + pixel.x] = sub_pixel(data.array[pixel.y * data.size.x + pixel.x], fgColor);

else if (data.combineMode == 'AVRG') data.array[pixel.y * data.size.x + pixel.x] = avrg_pixel(data.array[pixel.y * data.size.x + pixel.x], fgColor);

else if (data.combineMode == 'MULT') data.array[pixel.y * data.size.x + pixel.x] = mult_pixel(data.array[pixel.y * data.size.x + pixel.x], fgColor);

else if (data.combineMode == 'DIV') data.array[pixel.y * data.size.x + pixel.x] /= fgColor;

else if (data.combineMode == 'DIV2') data.array[pixel.y * data.size.x + pixel.x] = fgColor / data.array[pixel.y * data.size.x + pixel.x];

}

function set_brush(value) {

x = value.x - Math.floor(data.brush.size.x/2);

y = value.y - Math.floor(data.brush.size.y/2);

for(j = 0; j < data.brush.size.y; j++) {

for(k = 0; k < data.brush.size.x; k++) {

i = j * data.brush.size.x + k;

fgColor = data.brush.array[i];

pixel = new SFVec2f(x + k, y + j);

set_pixel(pixel);

}

function set_hitTexCoord(value, time) {

pixel = new SFVec2f(Math.round(value.x * data.size.x), Math.round(value.y * data.size.y));

if (data.enabled) {

if (data.brush) set_brush(pixel);

else set_pixel(pixel);

}

function initialize () {

set_bgColor(data.bgColor, 1);

set_fgColor(data.fgColor, 1);

if (!set_size(data.size, 1)) {

if (data.clear) set_clear(1, 1);

}

]]>

</Script>

</ProtoBody>

</ProtoDeclare>

<WorldInfo

info='"Created in CosmoWorlds", "Packaged by CosmoPackage"'/>

<NavigationInfo

type='"NONE"'/>

<Viewpoint

position='-2.03376 -2.79428 6.874'

fieldOfView='0.785398'/>

<TimeSensor DEF='_3'

loop='true'

startTime='1'/>

</ProtoInstance>

</field>

</fieldValue>

</ProtoInstance>

</field>

<![CDATA[ecmascript:

function set_time (value, time)

{

if (time - cycleTime > cycleInterval)

{

cycleTime = time;

if (time - colorTime > colorInterval)

{

colorTime = time;

bgColor = Math .random () > blackLevel

? new SFColor (Math .random (), Math.random (), Math.random ())

: new SFColor (0, 0, 0);

brush.bgColor = bgColor;

brush.clear = time;

}

canvas.set_hitTexCoord = new SFVec2f (Math.random (), Math.random ());

if (time - scaleTime > 19)

{

scaleTime = time;

scaleF = Math .random ();

}

if (time - rotateTime > 17)

{

rotateTime = time;

rotateF = Math .random ();

}

]]>

</Script>

<Transform

scale='1.65374 1.65369 1.65377'>

<Group>

<TimeSensor DEF='Time_6'

cycleInterval='20'

loop='true'

startTime='1'/>

</Group>

<Group>

<ScalarInterpolator DEF='_7'

key='0, 1'

keyValue='1, -1'/>

<ScalarInterpolator DEF='_8'

key='0, 1'

keyValue='0.74, 0.74'/>

<![CDATA[vrmlscript: function xIn(value) { xBuf = value; vec[0] = xBuf; vec[1] = yBuf; } function yIn(value) { yBuf = value; vec[0] = xBuf; vec[1] = yBuf; } ]]>

</Script>

</Group>

<Group>

<TimeSensor DEF='Time_10'

cycleInterval='10'

stopTime='1'/>

</Group>

<Group>

<ScalarInterpolator DEF='_11'

key='0, 1'

keyValue='0.1, 5'/>

<ScalarInterpolator DEF='_12'

key='0, 1'

keyValue='0.2, 5'/>

<![CDATA[vrmlscript: function xIn(value) { xBuf = value; vec[0] = xBuf; vec[1] = yBuf; } function yIn(value) { yBuf = value; vec[0] = xBuf; vec[1] = yBuf; } ]]>

</Script>

</Group>

<Group>

<TimeSensor DEF='Time'

cycleInterval='10'

stopTime='1'/>

</Group>

<ScalarInterpolator DEF='UnnamedShapeRotationInterp'

key='0, 1'

keyValue='0, 0.785398'/>

</Group>

<Shape>

<TextureTransform DEF='_14'

translation='-0.300994 0.74'

rotation='0.550211'

scale='2.35213 2.40617'

center='-0.5 -0.5'/>

</Appearance>

<IndexedFaceSet

creaseAngle='0.5'

coordIndex='0, 1, 2, 3, -1, 4, 5, 1, 0, -1, 6, 7, 3, 2, -1'>

<TextureCoordinate

point='0 1, 0 0, 0.00132632 -0.000351131, 0.00132632 0.999649, 0 1, 0 0, 0.00132632 -0.000351131, 0.00132632 0.999649'/>

<Coordinate

point='-3.45959 2.01432 1, -3.45959 -5.345 1, 1 -5.345 1, 1 2.01432 1, -3.45959 2.01432 5.00948, -3.45959 -5.345 5.00948, 1 -5.345 5.16322, 1 2.01432 5.16322'/>

</IndexedFaceSet>

</Shape>

</Transform>

</Scene>

</X3D>

Classic Encoding

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#X3D V3.3 utf8 Titania V4.0.6

PROFILE Full

META "comment" "World of Titania"

META "created" "Mon, 27 Nov 2017 03:13:31 GMT"

META "creator" "Holger Seelig"

META "generator" "Titania V4.0.2, http://titania.create3000.de"

META "identifier" "file:///home/holger/Projekte/Server/create3000.de/media/htdocs/components/Texturing/PixelTexture/PixelTexture.x3d"

META "modified" "Mon, 27 Nov 2017 03:28:08 GMT"

PROTO Canvas [

inputOutput SFVec2f size 8 8

inputOutput SFInt32 components 3

inputOutput MFInt32 array [ ]

initializeOnly SFBool repeatS FALSE

initializeOnly SFBool repeatT FALSE

inputOutput SFColor bgColor 0 0 0

inputOutput SFColor fgColor 0 0 0

inputOutput SFFloat opacity 0

inputOutput SFTime clear 0

inputOutput SFBool enabled FALSE

inputOnly SFVec2f set_hitTexCoord

inputOutput SFBool horizontallyWrap FALSE

inputOutput SFBool verticallyWrap FALSE

inputOutput SFString combineMode "STAMP"

inputOutput SFNode brush NULL

]

{

PROTO Data [

inputOutput SFVec2f size 8 8

inputOutput SFInt32 components 3

inputOutput MFInt32 array [ ]

inputOutput SFColor bgColor 0 0 0

inputOutput SFColor fgColor 0 0 0

inputOutput SFFloat opacity 0

inputOutput SFTime clear 0

inputOutput SFBool enabled FALSE

inputOutput SFBool horizontallyWrap FALSE

inputOutput SFBool verticallyWrap FALSE

inputOutput SFString combineMode "STAMP"

inputOutput SFNode brush NULL

]

{

Group { }

}

DEF _1 PixelTexture {

image 8 8 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

repeatS IS repeatS

repeatT IS repeatT

}

DEF CanvasScript Script {

outputOnly SFImage image_changed

inputOnly SFVec2f set_size

inputOnly MFInt32 set_array

inputOnly SFColor set_bgColor

inputOnly SFColor set_fgColor

inputOnly SFTime set_clear

inputOnly SFVec2f set_hitTexCoord IS set_hitTexCoord

initializeOnly SFInt32 bgColor 0

initializeOnly SFInt32 fgColor 0

initializeOnly SFNode data DEF _2 Data {

size IS size

components IS components

array IS array

bgColor IS bgColor

fgColor IS fgColor

opacity IS opacity

clear IS clear

enabled IS enabled

horizontallyWrap IS horizontallyWrap

verticallyWrap IS verticallyWrap

combineMode IS combineMode

brush IS brush

}

url "ecmascript: