blue: int You will create a default constructor that initializes those values to 255, and an overloaded constructor that takes user input to assign the values. The class will also have the following functions: changeRGB (): Takes in three integers to update the red, green, and blue attributes. Returns nothing. printRGB (): Takes in nothing. Prints the red, green, and blue attributes in order with a single space in-between each value. Returns nothing. You will then recreate the art program from Assignment 5
blue: int You will create a default constructor that initializes those values to 255, and an overloaded constructor that takes user input to assign the values. The class will also have the following functions: changeRGB (): Takes in three integers to update the red, green, and blue attributes. Returns nothing. printRGB (): Takes in nothing. Prints the red, green, and blue attributes in order with a single space in-between each value. Returns nothing. You will then recreate the art program from Assignment 5
Chapter14: Files And Streams
Section: Chapter Questions
Problem 13RQ
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Question
PPM (Portable Pixmap) use three integers to represent a pixel – this means we can have images with RGB colors. You will create a Pixel class in C++ which has three attributes:
- red: int
- green: int
- blue: int
You will create a default constructor that initializes those values to 255, and an overloaded constructor that takes user input to assign the values. The class will also have the following functions:
- changeRGB (): Takes in three integers to update the red, green, and blue attributes. Returns nothing.
- printRGB (): Takes in nothing. Prints the red, green, and blue attributes in order with a single space in-between each value. Returns nothing.
You will then recreate the art program from Assignment 5 with the following changes:
- Instead of a 2D array of integers, you will create a 2D array of Pixel object. Don’t be scared! This is similar to creating a 2D array of strings.
- You will prompt for three color values instead of one – red, green, and blue. These must be stored in a Pixel object in a cell in the 2D array.
- You will create a PPM file instead of PGM file – the magic number is “P3” and there will be three integers printed per pixel instead of one.
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