A

add(gobj) - Method in class GCompound

Adds a new graphical object to this GCompound.

add(gobj, x, y) - Method in class GCompound

add(gobj) - Method in class GWindow

Adds the graphical object to this canvas.

add(gobj, x, y) - Method in class GWindow

addEdge(dx, dy) - Method in class GPolygon

Adds an edge to the polygon whose components are given by the displacements dx and dy from the last vertex.

addEventListener(type, fn) - Method in class GWindow

Registers a new listener for events of the specified type occuring in the window.

addPolarEdge(r, theta) - Method in class GPolygon

Adds an edge to the polygon specified in polar coordinates.

addVertex(x, y) - Method in class GPolygon

Adds a vertex at (x, y) relative to the polygon origin.

angle(x0, y0, x1, y1) - Static method in class GMath

Computes the angle in degrees formed by a line segment from the point (x0, y0) and (x1, y1).

C

contains(x, y) - Method in class GObject

Checks to see whether a point is inside the object.

cosDegrees(theta) - Static method in class GMath

Returns the trigonometric cosine of its argument where angle is expressed in degrees.

createTimer(fn, delay) - Method in class GWindow

Creates a new timer object that calls fn after the specified delay, which is measured in milliseconds.

D

distance(x, y) - Static method in class GMath

Computes the distance between the origin and the point (x, y).

distance(x0, y0, x1, y1) - Static method in class GMath

Computes the distance between the points (x0, y0) and (x1, y1).

G

G3DRect - Class in the Portable Graphics Library

This class is a GRect whose borders can be modified to suggest being raised or lowered.

G3DRect(x, y) - Constructor for class G3DRect

Creates a new 3-D rectangle with the specified width and height, positioned at the origin.

G3DRect(x, y, width, height) - Constructor for class G3DRect

Creates a new 3-D rectangle with the specified bounds.

GArc - Class in the Portable Graphics Library

This class displays an elliptical arc.

GArc(width, height, start, sweep) - Constructor for class GArc

Creates a new GArc object consisting of an elliptical arc located at the point (0, 0).

GArc(x, y, width, height, start, sweep) - Constructor for class GArc

Creates a new GArc object consisting of an elliptical arc inscribed in the rectangle with the specified bounds.

GCompound - Class in the Portable Graphics Library

This class defines a graphical object that consists of a collection of other graphical objects.

GCompound() - Constructor for class GCompound

Creates a new GCompound object with no internal components.

GDimension - Class in the Portable Graphics Library

This class encapsulates a size containing a width and a height.

GDimension(width, height) - Constructor for class GDimension

Creates a new dimension object with the specified components.

getAscent() - Method in class GLabel

Returns the distance this string extends above the baseline.

getBounds() - Method in class GObject

Returns the bounding box of this object, which is defined to be the smallest rectangle that covers everything drawn by the figure.

getWindowHeight() - Method in class GWindow

Gets the height of the graphics window, without its borders.

getWindowWidth() - Method in class GWindow

Gets the width of the graphics window, without its borders.

getColor() - Method in class GObject

Returns the color used to display this object as a string.

getDescent() - Method in class GLabel

Returns the distance this string descends below the baseline.

getElement(k) - Method in class GCompound

Returns the graphical object at index k, numbering from back to front in the the z dimension.

getElement(k) - Method in class GWindow

Returns the graphical object at index k, numbering from back to front in the the z dimension.

getElementAt(x, y) - Method in class GWindow

Returns the topmost graphical object that contains the point (x, y), or None if no such object exists.

getElementCount() - Method in class GCompound

Returns the number of graphical objects stored in this container.

getElementCount() - Method in class GWindow

Returns the number of graphical objects stored in this GWindow.

getEndPoint() - Method in class GArc

Returns the point at which the arc ends.

getEndPoint() - Method in class GLine

Returns the end point of the line as a GPoint object.

Returns the color used to display the filled region of this object.

getFillColor() - Method in class GFillable

Returns the color used to display the filled region of this object.

getFont() - Method in class GLabel

Returns the font in which the GLabel is displayed.

getHeight() - Method in class GDimension

Returns the height of this GDimension.

getHeight() - Method in class GObject

Returns the height of this object, which is defined to be the height of the bounding box.

getHeight() - Method in class GRectangle

Returns the height of this GRectangle.

getLabel() - Method in class GLabel

Returns the string displayed by this object.

getLineWidth() - Method in class GObject

Returns the width of the lines used to draw the object.

getLocation() - Method in class GObject

Returns the location of this object as a GPoint.

getSize() - Method in class GObject

Returns the size of the bounding box for this object.

getStartAngle() - Method in class GArc

Returns the starting angle for this GArc object.

getStartPoint() - Method in class GArc

Returns the point at which the arc starts.

getStartPoint() - Method in class GLine

Returns the coordinates of the initial point in the line.

getSweepAngle() - Method in class GArc

Returns the sweep angle for this GArc object.

getWidth() - Method in class GDimension

Returns the width of this GDimension.

getWidth() - Method in class GObject

Returns the width of this object, which is defined to be the width of the bounding box.

getWidth() - Method in class GRectangle

Returns the width of this GRectangle.

getX() - Method in class GObject

Returns the x-coordinate of the object.

getX() - Method in class GPoint

Returns the x coordinate of this GPoint.

getY() - Method in class GObject

Returns the y-coordinate of the object.

getY() - Method in class GPoint

Returns the y coordinate of this GPoint.

getY() - Method in class GRectangle

Returns the y coordinate of this GRectangle.

GFillableObject - Class in the Portable Graphics Library

This abstract class unifies the GObject subclasses that support filling.

GImage - Class the Portable Graphics Library

The GImage class is a graphical object whose appearance is defined by an image.

GImage(filename) - Constructor for class GImage

Creates a new GImage object by looking for an image with that name.

GImage(array)> - Constructor for class GImage

Creates a new GImage object from the array of pixels.

GLabel - Class in the Portable Graphics Library

This class displays a text string.

GLabel(text) - Constructor for class GLabel

Creates a new GLabel object initialized to contain the specified text.

GLabel(text, x, y) - Constructor for class GLabel

Creates a new GLabel object with its baseline origin at the specified position.

GLine - Class in the Portable Graphics Library

The class displays a line segment.

GLine(x0, y0, x1, y1) - Constructor for class GLine

Creates a line segment from its endpoints.

GMath - Class in the Portable Graphics Library

This class defines a variety of mathematical methods that are useful in graphical applications.

GObject - Class in the Portable Graphics Library

This abstract class is the common superclass of all graphical objects that can be displayed on a graphics window.

GOval - Class in the Portable Graphics Library

This class displays an ellipse.

GOval(width, height) - Constructor for class GOval

Creates a new oval with the specified width and height, positioned at the origin.

GOval(x, y, width, height) - Constructor for class GOval

Creates a new oval inscribed within the specified bounds.

GPoint - Class in the Portable Graphics Library

This class encapsulates a location combining an x and a y coordinate.

GPoint(x, y) - Constructor for class GPoint

Creates a new GPoint with the specified coordinates.

GPolygon - Class in the Portable Graphics Library

The class displays a polygon.

GPolygon() - Constructor for class GPolygon

Creates a new empty polygon at the origin.

GRect - Class in the Portable Graphics Library

The class displays a rectangular box.

GRect(x, y) - Constructor for class GRect

Creates a new rectangle with the specified width and height, positioned at the origin.

GRect(x, y, width, height) - Constructor for class GRect

Creates a new rectangle with the specified bounds.

GRectangle - Class in the Portable Graphics Library

This class encapsulates the location and dimensions of a rectangle.

GRectangle(x, y, width, height) - Constructor for class GRectangle

Creates a new GRectangle with the specified coordinates and size.

GRoundRect - Class in the Portable Graphics Library

This class is a GRect with rounded corners.

GRoundRect(x, y) - Constructor for class GRoundRect

Creates a new rounded rectangle with the specified width and height, positioned at the origin.

GRoundRect(x, y, width, height) - Constructor for class GRoundRect

Creates a new rounded rectangle with the specified bounds.

GWindow - Class in the Portable Graphics Library

This class represents the drawing surface to which individual objects are added.

GWindow() - Constructor for class GWindow

Creates a new GWindow with a default preferred size.

GWindow(width, height) - Constructor for class GWindow

Creates a new GWindow and sets the size of its canvas to the specified width and height.

I

isFilled() - Method in class GFillable

Returns whether this object is filled.

isVisible() - Method in class GObject

Checks to see whether this object is visible.

M

move(dx, dy) - Method in class GObject

Moves the object on the screen using the displacements dx and dy.

movePolar(r, theta) - Method in class GObject

Moves the object using displacements given in polar coordinates.

R

remove(gobj) - Method in class GCompound

Removes a graphical object from this GCompound.

remove(gobj) - Method in class GWindow

Removes a graphical object from this GWindow.

removeAll() - Method in class GCompound

Removes all graphical objects from this GCompound.

rotate(theta) - Method in class GObject

Rotates the object on the screen theta degrees around its origin.

round(n) - Static method in class GMath

Rounds a number to the nearest integer.

S

scale(sf) - Method in class GObject

Scales the object on the screen by the scale factor sf, which applies in both dimensions.

sendBackward() - Method in class GObject

Moves this object one step toward the back in the z dimension.

sendForward() - Method in class GObject

Moves this object one step toward the front in the z dimension.

sendToBack() - Method in class GObject

Moves this object to the back of the display in the z dimension.

sendToFront() - Method in class GObject

Moves this object to the front of the display in the z dimension.

setBounds(x, y, width, height) - Method in class GOval

Changes the bounds of this object to the specified values.

setBounds(x, y, width, height) - Method in class GRect

setColor(color) - Method in class GObject

Sets the color used to display this object.

setEndPoint(x, y) - Method in class GLine

Sets the end point of the line to the point (x, y).

setFillColor(color) - Method in interface GFillable

Sets the color used to display the filled region of this object.

setFilled(flag) - Method in interface GFillable

Sets whether this object is filled.

setFont(font) - Method in class GLabel

Changes the font used to display the GLabel as specified by the string font, which is usually specified as a CSS font.

setFrameRectangle(x, y, width, height) - Method in class GArc

Changes the arc bounds to the specified values.

setImage(filename) - Method in class GImage

Resets the image used by this GImage object to the one identified by the argument filename.

setLabel(text) - Method in class GLabel

Changes the string stored within the GLabel object, so that a new text string appears on the display.

setLineWidth(width) - Method in class GObject

Sets the width of the lines used to draw the object.

setLocation(x, y) - Method in class GObject

Sets the location of this object to the point (x, y).

setSize(width, height) - Method in class GImage

Changes the size of this object to the specified width and height.

setSize(width, height) - Method in class GOval

Changes the size of this object to the specified width and height.

setSize(width, height) - Method in class GRect

Changes the size of this object to the specified width and height.

setStartAngle(theta) - Method in class GArc

Sets the starting angle for this GArc object.

setStartPoint(x, y) - Method in class GLine

Sets the initial point in the line to (x, y), leaving the end point unchanged.

setSweepAngle(sweep) - Method in class GArc

Sets the sweep angle for this GArc object.

setVisible(flag) - Method in class GObject

Sets whether this object is visible.

sinDegrees(theta) - Static method in class GMath

Returns the trigonometric sine of its argument where angle is expressed in degrees.

T

tanDegrees(theta) - Static method in class GMath

Returns the trigonometric tangent of its argument where angle is expressed in degrees.

toDegrees(radians) - Static method in class GMath

Converts an angle from radians to degrees.

toRadians(degrees) - Static method in class GMath

Converts an angle from degrees to radians.