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Provides a mechanism for rendering nodes into an OpenGL context.
Note that this interface is not intended to "be used alone". When actually
implementing a node realizer, you have to extend
NodeRealizer
and additionally
implement this interface. This is the only way to make sure that the realizer
you write works both with the yFiles package and the y25 package.
Method Summary | |
Point3D |
intersect(Point3D source,
Point3D target,
float nodeZ)
Intersects a line segment with this node and returns the intersection point. |
void |
paintGL(GLAutoDrawable drawable,
Camera camera)
Renders the node this realizer belongs to into the given drawable. |
Methods inherited from interface y25.layout.NodeLayout25D |
getDepth, getRelativeBoundingBox, setDepth, setSize |
Methods inherited from interface y.layout.NodeLayout |
getHeight, getWidth, getX, getY, setLocation, setSize |
Method Detail |
public void paintGL(GLAutoDrawable drawable, Camera camera)
The passed camera is the one that is used to display this node. It can be used, for example, to render a node differently depending on the viewing position, or to display labels that always face the viewer.
public Point3D intersect(Point3D source, Point3D target, float nodeZ)
The line segment in three dimensional space is defined by the two points:
source
and target
. Since a node's
z-position is determined only by the layer it resides in, this
information is not available inside the realizer and therefore has to be
passed in nodeZ
.
This method should return an intersection point only if the passed line
segment actually intersects the node. It should return null
,
if the line segment is completely outside or completely inside the node.
If the line segment intersects the node at more than one position, the
first of these intersections has to be returned, i.e. the one that is
closest to source
.
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