CODEWITHSUNDEEP
java
user1993381
user1993381

Reputation: 179

Color Scaling in Java

I am trying to scale the color components of a pixel. To do this I am creating a new pixel where each color component is the original value * the scaling factor for that color. The resulting pixel must have values that fall within the range of 0 <= color <= 255.

This is what I am doing so far

public class ColorScale implements Transformer {
    /* This part creates a transformer that scales the color in each pixel by the following factors
        parameter r0 = red factor
        parameter b0 = blue factor
        parameter g0 = green factor 
    */

    public ColorScale(double r0, double g0, double b0) {
       // need guidance as what to do here
    }

    public Pixel transformPixel(pixel p) {
        return p;
    }
}

More info is here: http://www.seas.upenn.edu/~cis120/current/hw/hw07/javadoc/ColorScale.html

I am new to Java, so I just need guidance as to what to do in the ColorScale function.

Upvotes: 1

Views: 841

Answers (1)

Philip Tenn
Philip Tenn

Reputation: 6073

From the JavaDoc you provided, ColorScale is one of the Transformer implementations.

From your code snippet:

public ColorScale(double r0, double g0, double b0) {
   // need guidance as what to do here
}

This is the constructor. You are creating an instance of a specific implementation of a Pixel Transformer (in this case, ColorScale).

The constructor should simply set the internal state of the Transformer, and then it will be set up for transforming Pixels via the contract method transformPixel.

In other words, 

public ColorScale(double r0, double g0, double b0) {
   // Set internal state fields. 
   this.r0 = r0;
   this.g0 = g0;
   this.b0 = b0;
}

Upvotes: 3

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