org.proteinshader.graphics
Class Shape

java.lang.Object
  org.proteinshader.graphics.Shape

Direct Known Subclasses:

Cylinder, ExtrudedShape, Sphere

public abstract class Shape
extends Object

Contains common methods needed by classes that draw geometric objects.

Field Summary

static double	HALF_PI One-half Pi is defined as 1.57079632679489.
static double	PI Pi is defined as 3.14159265358979.
static float[]	SPECULAR_COLOR The material specular color is (0.95, 0.95, 0.95, 1.0).
static double	TWO_PI 2*Pi is defined as 6.28318530717958.

Constructor Summary

Shape()
Constructor for use by subclasses.

Method Summary

void	deleteDisplayList(GL gl, int displayListName) Deletes an OpenGL display list.
void	executeDisplayList(GL gl, double scale, int displayListName) Executes an OpenGL display list and uniformly scales the geometric object.
void	executeDisplayList(GL gl, int displayListName) Executes an OpenGL display list.
void	setMaterial(GL gl, float red, float green, float blue, float alpha, float specularExp) Sets the material properties for the object about to be drawn.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PI

public static final double PI

Pi is defined as 3.14159265358979.

See Also:

Constant Field Values

TWO_PI

public static final double TWO_PI

2*Pi is defined as 6.28318530717958.

See Also:

Constant Field Values

HALF_PI

public static final double HALF_PI

One-half Pi is defined as 1.57079632679489.

See Also:

Constant Field Values

SPECULAR_COLOR

public static final float[] SPECULAR_COLOR

The material specular color is (0.95, 0.95, 0.95, 1.0).

Constructor Detail

Shape

public Shape()

Constructor for use by subclasses.

Method Detail

executeDisplayList

public void executeDisplayList(GL gl,
                               double scale,
                               int displayListName)

Executes an OpenGL display list and uniformly scales the geometric object.

Parameters:

gl - the current GL object.

scale - the scale factor for the sphere.

displayListName - the name (an integer) of an OpenGL display list.

executeDisplayList

public void executeDisplayList(GL gl,
                               int displayListName)

Executes an OpenGL display list.

Parameters:

gl - the current GL object.

displayListName - the name (an integer) of an OpenGL display list.

deleteDisplayList

public void deleteDisplayList(GL gl,
                              int displayListName)

Deletes an OpenGL display list. If a display list is no longer needed, its memory on the graphics card should be freed up by calling this method. If the name given as an argument does not correspond to an existing display list, it is simply ignored.

Parameters:

displayListName - the name (an integer) of an OpenGL display list.

setMaterial

public void setMaterial(GL gl,
                        float red,
                        float green,
                        float blue,
                        float alpha,
                        float specularExp)

Sets the material properties for the object about to be drawn.

The ambient and diffuse color of the material will be set to the colors given as arguments. The specular color is set to the default value for Shape.

Parameters:

gl - the current GL object.

red - component of RGBA color

green - component of RGBA color

blue - component of RGBA color

alpha - component of RGBA color

specularExp - the specular exponent for Phong lighting calculations.