Exercices
Homework
16. Design practice
Ján Dugáček
April 15, 2019
Ján Dugáček 16. Design practice
Exercices
Homework
Table of Contents
1 Exercices
Introduction
Exercises
2 Homework
Ján Dugáček 16. Design practice
Exercices
Homework
Introduction
Exercises
Introduction
1 You are strongly advised to use the image.hpp class from
study materials for this lesson
2 These exercises build on each other, so skipping some might
be impractical
Ján Dugáček 16. Design practice
Exercices
Homework
Introduction
Exercises
Exercises
1 Create a class Canvas that has all the properties of Image,
but has an extra draw() method allowing to draw objects
inheriting from class Drawable
2 Create a Triangle class inheriting from Drawable that, draws
a triangle with given coordinates of points on the image
3 Create a Parallelepiped class inheriting from Drawable that
is composed of two triangles and uses them for drawing itself
4 Create a Polygon class in a similar way to the previous exercise
5 Create a Colour class and use it to set colours to objects with
less code
Somewhere during the process, change the way colours are handled
to avoid code duplication. Solutions to the first two exercises can
be pasted from:
github.com/Dugy/simplest_image_library_possible
Ján Dugáček 16. Design practice
Exercices
Homework
Introduction
Exercises
Exercises #2
1 Create a Polygon3D class that can be projected into a
Polygon (or drawn on the Canvas) and rotated in 3 axes
2 Create a Light class with a direction and modify the
Polygon3D class appropriately so that the projection into the
Polygon class changes the colour according to the illumination
3 Create a PolygonSet class that contains several Polygon
objects and draws them in proper order and can be rotated
4 Create a Cube class that is a cube that can be drawn on the
Canvas while using illumination somehow
Somewhere in the process, create a Vector3D class holding three
coordinates and supports dot product and cross product. Also,
change the Canvas class to add a method to draw Polygon3D
objects with illumination.
Ján Dugáček 16. Design practice
Exercices
Homework
Homework
Change the class system from these exercises so that they
would draw over a picture, but add the changes to the original
contents of the picture with chosen opacity
You have two weeks to do it
Challenge for the Advanced: finish the regular exercises
Ján Dugáček 16. Design practice