Package org.web3d.x3d.sai

Interface MFImage

All Superinterfaces:

MField, X3DField

All Known Implementing Classes:

MFImage

public interface MFImage
extends MField

MFImage is an array of SFImage values.

Warning: this is an abstract interface that cannot be instantiated as a concrete object. Java programmers typically only need to use concrete objects provided by the org.web3d.x3d.jsail classes.
Package hint: This interface is defined by the X3D Java Language Binding Specification for the Scene Authoring Interface (SAI).

See Also:

• SAI Java Specification: B.4.18
• SAI Abstract Specification: 5.2.15 SAIFieldType
• X3D Abstract Specification: 5.3.6 SFImage and MFImage
• X3D Tooltips
• X3D Tooltips: field
• X3D Tooltips: fieldValue
• X3D Scene Authoring Hints

Method Summary

Modifier and Type	Method	Description
void	append(RenderedImage[] newValue)	Places a new value at the end of the existing value array, increasing the field length accordingly.
int	getHeight(int imageIndex)	Get the height of the image array.
WritableRenderedImage	getImage(int imageIndex)	Fetch the Java representation of the underlying image from these pixels.
int	getNumberComponents(int imageIndex)	Get the number of color components in the image.
void	getPixels(int imageIndex, int[] pixels)	Get the image pixel value in the given eventOut.
int	getWidth(int imageIndex)	Get the width of the image array.
void	insertValue(int index, RenderedImage newValue)	Insert a new value prior to the index location in the existing value array, increasing the field length accordingly.
void	set1Value(int imageIndex, int newValue)	Replace a single value at the appropriate location in the existing value array.
void	set1Value(int imageIndex, int width, int height, int components, int[] pixels)
void	setImage(int imageIndex, RenderedImage image)	Set the image value in the given writable field to the new image defined by a set of pixels.
void	setImage(RenderedImage[] image)
void	setSubImage(int imageIndex, RenderedImage image, int sourceWidth, int sourceHeight, int sourceXOffset, int sourceYOffset, int destinationXOffset, int destinationYOffset)	Copy a region of the argument RenderedImage to replace a portion of the current SFimage.
void	setValue(int[] newValue)	Assign a new value array containing imageIndex, width, height, and components count, followed by array of pixels.

Methods inherited from interface org.web3d.x3d.sai.MField

clear, remove, size

Method Details

getWidth

int getWidth(int imageIndex)

Get the width of the image array.

Parameters:

imageIndex - the index of the selected image

Returns:

The width of the image in pixels

getHeight

int getHeight(int imageIndex)

Get the height of the image array.

Parameters:

imageIndex - the index of the selected image

Returns:

The height of the image in pixels

getNumberComponents

int getNumberComponents(int imageIndex)

Get the number of color components in the image. The value will always be between 0 and 4 indicating the number of components of the color specification to be read from the image pixel data.

Parameters:

imageIndex - the index of the selected image

Returns:

The number of components

getPixels

void getPixels(int imageIndex,
 int[] pixels)

Get the image pixel value in the given eventOut.

The number of items in the pixels array will be width * height. If there are less items than this an ArrayIndexOutOfBoundsException will be generated. The integer values are represented according to the number of components.

1 Component Images
The integer has the intensity value stored in the lowest byte and can be obtained:

    intensity = (pixel[i]     ) &0xFF;
  

2 Component Images
The integer has the transparency value stored in the lowest byte and the intensity in the next byte:

    intensity = (pixel[i] >> 8) &0xFF;
    alpha     = (pixel[i]     ) &0xFF;
  

3 Component Images
The three color components are stored in the integer array as follows:

    red   = (pixel[i] >> 16) &0xFF;
    green = (pixel[i] >>  8) &0xFF;
    blue  = (pixel[i]      ) &0xFF;
  

4 Component Images
The integer has the value stored in the array as follows:

    red   = (pixel[i] >> 24) &0xFF;
    green = (pixel[i] >> 16) &0xFF;
    blue  = (pixel[i] >>  8) &0xFF;
    alpha = (pixel[i]      ) &0xFF;
  

The width and height values must be greater than or equal to zero. The number of components is between 1 and 4. Any value outside of these bounds will generate an IllegalArgumentException.

Parameters:

imageIndex - the index of the selected image

pixels - The array to copy pixel values into

getImage

WritableRenderedImage getImage(int imageIndex)

Fetch the Java representation of the underlying image from these pixels. This is the same copy that the browser uses to generate texture information from.

Parameters:

imageIndex - the index of the selected image

Returns:

The image reference representing the current state

setImage

void setImage(int imageIndex,
 RenderedImage image)

Set the image value in the given writable field to the new image defined by a set of pixels.

Parameters:

imageIndex - the index of the selected image

image - The new image to use as the source

setSubImage

void setSubImage(int imageIndex,
 RenderedImage image,
 int sourceWidth,
 int sourceHeight,
 int sourceXOffset,
 int sourceYOffset,
 int destinationXOffset,
 int destinationYOffset)

Copy a region of the argument RenderedImage to replace a portion of the current SFimage.

The sub image set shall not resize the base image representation and therefore performs an intersection clip of the provided image. The user provided image shall be of the same format (pixel depth, pixel representation) as the original image obtained through the getImage() method.

RenderedImages are row order from top to bottom. A 4x8 RenderImage is indexed as follows:

 X >01234567
   ----------
 0 |********|
 1 |********|
 2 |********|
 3 |********|
 ^ ----------
 Y

  

SFImages are row order from bottom to top. A 4x8 RenderImage is indexed as follows:

 X >01234567
   ----------
 3 |********|
 2 |********|
 1 |********|
 0 |********|
 ^ ----------
 Y

  

Note: The parameter srcYOffset is referenced to the RenderedImage object (indexed top to bottom).
The parameter destYOffset is referenced to the SFImage object (indexed bottom to top).

Parameters:

imageIndex - the index of the selected image

image - The new image to use as the source

sourceWidth - The width of the argument sub-image region to copy

sourceHeight - The height of the argument sub-image region to copy

sourceXOffset - The initial x dimension (width) offset into the argument sub-image that begins the region to copy

sourceYOffset - The initial y dimension (height) offset into the argument sub-image that begins the region to copy

destinationXOffset - The initial x dimension (width) offset in the SFimage object that begins the region to receive the copy

destinationYOffset - The initial y dimension (height) offset in the SFimage object that begins the region to receive the copy

set1Value

void set1Value(int imageIndex,
 int newValue)

Replace a single value at the appropriate location in the existing value array. Size of the current underlying value array does not change.

Parameters:

imageIndex - the index of the selected image

newValue - provides new value to apply

set1Value

void set1Value(int imageIndex,
 int width,
 int height,
 int components,
 int[] pixels)

setValue

void setValue(int[] newValue)

Assign a new value array containing imageIndex, width, height, and components count, followed by array of pixels.

Parameters:

newValue - the newValue to set

setImage

void setImage(RenderedImage[] image)

append

void append(RenderedImage[] newValue)

Places a new value at the end of the existing value array, increasing the field length accordingly.

Parameters:

newValue - The newValue to append

insertValue

void insertValue(int index,
 RenderedImage newValue)

Insert a new value prior to the index location in the existing value array, increasing the field length accordingly.

Parameters:

index - The position for the inserted value in the current array

newValue - The newValue to insert