org.graphstream.ui.view.camera

Interface Backend

public interface Backend

Class used by DefaultCamera, implementation in gs-ui-...

Method Summary

Modifier and Type	Method and Description
void	beginTransform() Begin the work on the actual transformation matrix.
void	endTransform() End the work on the actual transformation matrix, installing it as the actual modelview matrix.
Point3	inverseTransform(double x, double y, double z) Pass a point in transformed coordinates (pixels) into the reverse transform (into graph units).
Point3	inverseTransform(Point3 p) Transform a point in pixel units into graph units, the given point is transformed in place and also returned.
void	popTransform() Pop the actual transformation of the matrix stack, restoring the previous one in the stack.
void	pushTransform() Push the actual transformation on the matrix stack, installing a copy of it on the top of the stack.
void	rotate(double angle, double ax, double ay, double az) Multiply the top-most matrix by a rotation matrix.
void	scale(double sx, double sy, double sz) Multiply the top-most matrix by a scaling matrix.
void	setAntialias(java.lang.Boolean on) Enable or disable anti-aliasing.
void	setIdentity() Make the top-most matrix as an identity matrix.
void	setQuality(java.lang.Boolean on) Enable or disable the hi-quality mode.
Point3	transform(double x, double y, double z) Transform a point in graph units into pixel units.
Point3	transform(Point3 p) Transform a point in graph units into pixel units, the given point is transformed in place and also returned.
void	translate(double tx, double ty, double tz) Multiply the to-most matrix by a translation matrix.

Method Detail

transform

Point3 transform(double x,
                 double y,
                 double z)

Transform a point in graph units into pixel units.

Returns:

the transformed point.

inverseTransform

Point3 inverseTransform(double x,
                        double y,
                        double z)

Pass a point in transformed coordinates (pixels) into the reverse transform (into graph units).

Returns:

the transformed point.

transform

Point3 transform(Point3 p)

Transform a point in graph units into pixel units, the given point is transformed in place and also returned.

inverseTransform

Point3 inverseTransform(Point3 p)

Transform a point in pixel units into graph units, the given point is transformed in place and also returned.

pushTransform

void pushTransform()

Push the actual transformation on the matrix stack, installing a copy of it on the top of the stack.

beginTransform

void beginTransform()

Begin the work on the actual transformation matrix.

setIdentity

void setIdentity()

Make the top-most matrix as an identity matrix.

translate

void translate(double tx,
               double ty,
               double tz)

Multiply the to-most matrix by a translation matrix.

rotate

void rotate(double angle,
            double ax,
            double ay,
            double az)

Multiply the top-most matrix by a rotation matrix.

scale

void scale(double sx,
           double sy,
           double sz)

Multiply the top-most matrix by a scaling matrix.

endTransform

void endTransform()

End the work on the actual transformation matrix, installing it as the actual modelview matrix. If you do not call this method, all the scaling, translation and rotation are lost.

popTransform

void popTransform()

Pop the actual transformation of the matrix stack, restoring the previous one in the stack.

setAntialias

void setAntialias(java.lang.Boolean on)

Enable or disable anti-aliasing.

setQuality

void setQuality(java.lang.Boolean on)

Enable or disable the hi-quality mode.