Author: paperwing
Date: 2012-03-05 11:20:52 -0800 (Mon, 05 Mar 2012)
New Revision: 28425
Added:
csplugins/trunk/toronto/yuedong/paperwing-impl/src/main/java/org/cytoscape/paperwing/internal/lighting/
csplugins/trunk/toronto/yuedong/paperwing-impl/src/main/java/org/cytoscape/paperwing/internal/lighting/Light.java
Log:
Completed Light class to act as an abstraction for lights when setting up
lighting
Added:
csplugins/trunk/toronto/yuedong/paperwing-impl/src/main/java/org/cytoscape/paperwing/internal/lighting/Light.java
===================================================================
---
csplugins/trunk/toronto/yuedong/paperwing-impl/src/main/java/org/cytoscape/paperwing/internal/lighting/Light.java
(rev 0)
+++
csplugins/trunk/toronto/yuedong/paperwing-impl/src/main/java/org/cytoscape/paperwing/internal/lighting/Light.java
2012-03-05 19:20:52 UTC (rev 28425)
@@ -0,0 +1,139 @@
+package org.cytoscape.paperwing.internal.lighting;
+
+import org.cytoscape.paperwing.internal.geometric.Vector3;
+
+/**
+ * This class represents a light described by the Phong illumination model
+ */
+public class Light {
+
+ /** An array containing the color of the ambient component of the light
in RGBA format */
+ private float[] ambient;
+
+ /** An array containing the color of the diffuse component of the light
in RGBA format */
+ private float[] diffuse;
+
+ /** An array containing the color of the specular component of the
light in RGBA format */
+ private float[] specular;
+
+ /** The position of the light in 3D space */
+ private Vector3 position;
+
+ public Light(float[] ambient, float[] diffuse, float[] specular,
Vector3 position) {
+ // Require 4 parameters for ambient, diffuse, and specular
lighting
+ if (ambient.length < 4) {
+ throw new IllegalArgumentException("Array for light
ambient property has less than 4 elements.");
+ }
+
+ if (diffuse.length < 4) {
+ throw new IllegalArgumentException("Array for light
diffuse property has less than 4 elements.");
+ }
+
+ if (specular.length < 4) {
+ throw new IllegalArgumentException("Array for light
specular property has less than 4 elements.");
+ }
+
+ this.position = new Vector3(position);
+
+ this.ambient = new float[4];
+ this.diffuse = new float[4];
+ this.specular = new float[4];
+
+ // Copy light properties
+ for (int i = 0; i < 4; i++) {
+ this.ambient[i] = ambient[i];
+ this.diffuse[i] = diffuse[i];
+ this.specular[i] = specular[i];
+ }
+ }
+
+ /**
+ * Return the RGBA values for the ambient light property.
+ *
+ * @return A size 4 array containing the RGBA values for the ambient
light property.
+ */
+ public float[] getAmbient() {
+ return ambient;
+ }
+
+ /**
+ * Return the RGBA values for the diffuse light property.
+ *
+ * @return A size 4 array containing the RGBA values for the diffuse
light property.
+ */
+ public float[] getDiffuse() {
+ return diffuse;
+ }
+
+ /**
+ * Return the RGBA values for the specular light property.
+ *
+ * @return A size 4 array containing the RGBA values for the specular
light property.
+ */
+ public float[] getSpecular() {
+ return specular;
+ }
+
+ /**
+ * Return the position of the light.
+ *
+ * @return A {@link Vector3} containing the 3D coordinates of the light.
+ */
+ public Vector3 getPosition() {
+ return position;
+ }
+
+ /**
+ * Set the properties of the light's ambient component.
+ *
+ * @param red The amount of red, ranging from 0.0 to 1.0.
+ * @param green The amount of green, ranging from 0.0 to 1.0.
+ * @param blue The amount of blue, ranging from 0.0 to 1.0.
+ * @param alpha The alpha value for the light, which contributes to
light intensity.
+ */
+ public void setAmbient(float red, float green, float blue, float alpha)
{
+ ambient[0] = red;
+ ambient[1] = green;
+ ambient[2] = blue;
+ ambient[3] = alpha;
+ }
+
+ /**
+ * Set the properties of the light's diffuse component.
+ *
+ * @param red The amount of red, ranging from 0.0 to 1.0.
+ * @param green The amount of green, ranging from 0.0 to 1.0.
+ * @param blue The amount of blue, ranging from 0.0 to 1.0.
+ * @param alpha The alpha value for the light, which contributes to
light intensity.
+ */
+ public void setDiffuse(float red, float green, float blue, float alpha)
{
+ diffuse[0] = red;
+ diffuse[1] = green;
+ diffuse[2] = blue;
+ diffuse[3] = alpha;
+ }
+
+ /**
+ * Set the properties of the light's specular component.
+ *
+ * @param red The amount of red, ranging from 0.0 to 1.0.
+ * @param green The amount of green, ranging from 0.0 to 1.0.
+ * @param blue The amount of blue, ranging from 0.0 to 1.0.
+ * @param alpha The alpha value for the light, which contributes to
light intensity.
+ */
+ public void setSpecular(float red, float green, float blue, float
alpha) {
+ specular[0] = red;
+ specular[1] = green;
+ specular[2] = blue;
+ specular[3] = alpha;
+ }
+
+ /**
+ * Set the position of the light to a new value.
+ *
+ * @param position The new position represented by a {@link Vector3}
object.
+ */
+ public void setPosition(Vector3 position) {
+ this.position.set(position);
+ }
+}
Property changes on:
csplugins/trunk/toronto/yuedong/paperwing-impl/src/main/java/org/cytoscape/paperwing/internal/lighting/Light.java
___________________________________________________________________
Added: svn:mime-type
+ text/plain
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