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java.lang.Objectorg.jzy3d.plot3d.text.TextBillboard
public class TextBillboard
A TextBillboard
allows writing 2d text always facing the Camera of a 3d Scene.
TextBillboard provides the pixel definition of all characters of
the ASCII alphabet. A default bitmap (plain rectangle)
is provided for unrecognized characters
(those that do not have an ASCII code).
The bitmap library is static, and thus no overhead is
generated by the use of several instances of TextBillboard.
It is however not necessary to have an instance of TextBillboard
for each drawn string.
String s = new String("2d text in 3d Scene");
TextBillboard txt = new TextBillboard();
BoundingBox3d box;
txt.drawText(gl, s, Coord3d.ORIGIN, Halign.LEFT, Valign.GROUND, Color.BLACK);
box = txt.drawText(gl, glu, cam, s, Coord3d.ORIGIN, Halign.LEFT, Valign.GROUND, Color.BLACK);
Layout constants
As demonstrated in the previous example, the TextBillboard
handles
vertical and horizontal layout of text according to the given text coordinate.
The following picture illustrates the text layout when using
the various layout constants
Constructor Summary | |
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TextBillboard()
The TextBillboard class provides support for drawing ASCII characters Any non ascii caracter will be replaced by a square. |
Method Summary | |
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BoundingBox3d |
drawText(javax.media.opengl.GL gl,
javax.media.opengl.glu.GLU glu,
Camera cam,
java.lang.String s,
Coord3d position,
Halign halign,
Valign valign,
Color color)
Draw a string at the specified position and compute the 3d volume occupied by the string according to the current Camera configuration. |
void |
drawText(javax.media.opengl.GL gl,
java.lang.String s,
Coord3d position,
Halign halign,
Valign valign,
Color color)
Draw a string at the specified position. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TextBillboard()
Method Detail |
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public void drawText(javax.media.opengl.GL gl, java.lang.String s, Coord3d position, Halign halign, Valign valign, Color color)
public BoundingBox3d drawText(javax.media.opengl.GL gl, javax.media.opengl.glu.GLU glu, Camera cam, java.lang.String s, Coord3d position, Halign halign, Valign valign, Color color)
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