java.lang.Object
- org.jmol.g3d.SphereRenderer

```
public class SphereRenderer
extends java.lang.Object
```
Implements high performance rendering of shaded spheres.

Drawing spheres quickly is critically important to Jmol. These routines implement high performance rendering of spheres in 3D.

If you can think of a faster way to implement this, please let us know.

There is a lot of bit-twiddling going on here, which may make the code difficult to understand for non-systems programmers.
Ellipsoid code added 4/2008 -- Bob Hanson hansonr@stolaf.edu

Author:

Miguel, miguel@jmol.org

Field Summary

Fields
Modifier and Type	Field	Description
`private double[]`	`coef`
`private int`	`depth`
`private float[][]`	`dxyz`
`private Graphics3D`	`g3d`
`private int`	`height`
`private javajs.util.M3`	`mat`
`private static int`	`maxOddSizeSphere`
`(package private) static int`	`maxSphereDiameter`
`(package private) static int`	`maxSphereDiameter2`
`private javajs.util.M4`	`mDeriv`
`private int`	`offsetPbufBeginLine`
`private int`	`planeShade`
`private int[]`	`planeShades`
`private javajs.util.P3`	`ptTemp`
`private int`	`selectedOctant`
`private static int`	`SHADE_SLAB_CLIPPED`
`private Shader`	`shader`
`private int`	`slab`
`private int`	`width`
`private int[]`	`zbuf`
`private double[]`	`zroot`

Constructor Summary

Constructors
Constructor Description

SphereRenderer(Graphics3D g3d)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) void`	`render(int[] shades, int diameter, int x, int y, int z, javajs.util.M3 mat, double[] coef, javajs.util.M4 mDeriv, int selectedOctant, javajs.util.P3[] octantPoints)`
`private void`	`renderQuadrant(int xSign, int ySign, int x, int y, int z, int diameter, int[] shades)`
`private void`	`renderQuadrantClipped(int radius, int xSign, int ySign, int x, int y, int z, int[] shades)`
`private void`	`renderQuadrantUnclipped(int radius, int xSign, int ySign, int z, int[] s)`
`private void`	`renderSphereClipped(int[] sphereShape, int x, int y, int z, int diameter, int[] shades)`
`private void`	`renderSphereUnclipped(int[] sphereShape, int z, int diameter, int[] shades)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

g3d
```
private final Graphics3D g3d
```

shader
```
private final Shader shader
```

maxOddSizeSphere
```
private static final int maxOddSizeSphere
```
See Also:

Constant Field Values

maxSphereDiameter
```
static final int maxSphereDiameter
```
See Also:

Constant Field Values

maxSphereDiameter2
```
static final int maxSphereDiameter2
```
See Also:

Constant Field Values

zroot
```
private double[] zroot
```

mat
```
private javajs.util.M3 mat
```

coef
```
private double[] coef
```

mDeriv
```
private javajs.util.M4 mDeriv
```

selectedOctant
```
private int selectedOctant
```

planeShade
```
private int planeShade
```

zbuf
```
private int[] zbuf
```

width
```
private int width
```

height
```
private int height
```

depth
```
private int depth
```

slab
```
private int slab
```

offsetPbufBeginLine
```
private int offsetPbufBeginLine
```

SHADE_SLAB_CLIPPED
```
private static final int SHADE_SLAB_CLIPPED
```
See Also:

Constant Field Values

ptTemp
```
private final javajs.util.P3 ptTemp
```

planeShades
```
private final int[] planeShades
```

dxyz
```
private final float[][] dxyz
```

Constructor Detail
- SphereRenderer
```
SphereRenderer(Graphics3D g3d)
```

Method Detail

render

void render(int[] shades,
            int diameter,
            int x,
            int y,
            int z,
            javajs.util.M3 mat,
            double[] coef,
            javajs.util.M4 mDeriv,
            int selectedOctant,
            javajs.util.P3[] octantPoints)

renderSphereUnclipped

private void renderSphereUnclipped(int[] sphereShape,
                                   int z,
                                   int diameter,
                                   int[] shades)

renderSphereClipped

private void renderSphereClipped(int[] sphereShape,
                                 int x,
                                 int y,
                                 int z,
                                 int diameter,
                                 int[] shades)

renderQuadrant

private void renderQuadrant(int xSign,
                            int ySign,
                            int x,
                            int y,
                            int z,
                            int diameter,
                            int[] shades)

renderQuadrantUnclipped

private void renderQuadrantUnclipped(int radius,
                                     int xSign,
                                     int ySign,
                                     int z,
                                     int[] s)

renderQuadrantClipped

private void renderQuadrantClipped(int radius,
                                   int xSign,
                                   int ySign,
                                   int x,
                                   int y,
                                   int z,
                                   int[] shades)

Class SphereRenderer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

g3d

shader

maxOddSizeSphere

maxSphereDiameter

maxSphereDiameter2

zroot

mat

coef

mDeriv

selectedOctant

planeShade

zbuf

width

height

depth

slab

offsetPbufBeginLine

SHADE_SLAB_CLIPPED

ptTemp

planeShades

dxyz

Constructor Detail

SphereRenderer

Method Detail

render

renderSphereUnclipped

renderSphereClipped

renderQuadrant

renderQuadrantUnclipped

renderQuadrantClipped