org.opensourcephysics.media.core
Interface InteractiveImage

All Superinterfaces:

Drawable, DrawableImage, Interactive, Measurable

All Known Subinterfaces:

Video

All Known Implementing Classes:

GifVideo, ImageVideo, VideoAdapter

public interface InteractiveImage
extends Interactive, DrawableImage

This defines methods used by interactive drawable images.

Version:

1.0

Author:

Douglas Brown

Method Summary

double	getAngle() Gets the angle in radians of the image base measured ccw from the world x-axis.
ImageCoordSystem	getCoords() Gets the image coordinate system.
double	getHeight() Gets the height of the image in world units.
double	getRelativeAspect() Gets the relative aspect of the displayed image.
double	getWidth() Gets the width of the image in world units.
void	setAngle(double theta) Sets the angle in radians of the image base measured ccw from the world x-axis.
void	setCoords(ImageCoordSystem coords) Sets the image coordinate system.
void	setHeight(double height) Sets the height of the image in world units.
void	setRelativeAspect(double relativeAspect) Sets the relative aspect of the displayed image.
void	setWidth(double width) Sets the width of the image in world units.

Methods inherited from interface org.opensourcephysics.display.Interactive

findInteractive, getX, getY, isEnabled, setEnabled, setX, setXY, setY

Methods inherited from interface org.opensourcephysics.display.Measurable

getXMax, getXMin, getYMax, getYMin, isMeasured

Methods inherited from interface org.opensourcephysics.display.Drawable

draw

Methods inherited from interface org.opensourcephysics.media.core.DrawableImage

getFilterStack, getImage, getProperty, getPropertyNames, isVisible, setFilterStack, setProperty, setVisible

Method Detail

setRelativeAspect

void setRelativeAspect(double relativeAspect)

Sets the relative aspect of the displayed image. The pixel aspect of an image is the ratio of its pixel width to height. Its world aspect is the ratio of width to height in world units. For example, a 320 x 240 pixel image has a pixel aspect of 4/3. If its relative aspect is set to 2, then the world aspect of the image will be 8/3. This means that if the image width is set to 16, its height will be 6. Conversely, if its height is set to 10, its width will be 8/3 x 10 = 26.666.

Parameters:

relativeAspect - the world aspect of the image relative to its pixel aspect.

getRelativeAspect

double getRelativeAspect()

Gets the relative aspect of the displayed image.

Returns:

the relative aspect of the displayed image

See Also:

setRelativeAspect(double)

setWidth

void setWidth(double width)

Sets the width of the image in world units. This method also sets the height using the relative aspect.

Parameters:

width - the width in world units

See Also:

setRelativeAspect(double)

getWidth

double getWidth()

Gets the width of the image in world units.

Returns:

the width of the image

setHeight

void setHeight(double height)

Sets the height of the image in world units. This method also sets the width using the relative aspect.

Parameters:

height - the height in world units

See Also:

setRelativeAspect(double)

getHeight

double getHeight()

Gets the height of the image in world units.

Returns:

the height of the image

setAngle

void setAngle(double theta)

Sets the angle in radians of the image base measured ccw from the world x-axis.

Parameters:

theta - the angle in radians

getAngle

double getAngle()

Gets the angle in radians of the image base measured ccw from the world x-axis.

Returns:

the angle in radians

getCoords

ImageCoordSystem getCoords()

Gets the image coordinate system.

Returns:

the image coordinate system

setCoords

void setCoords(ImageCoordSystem coords)

Sets the image coordinate system.

Parameters:

coords - the image coordinate system