GraphicEngine

Graphic Engine and Model Generator made in C++ with spacial movement.

The engine uses OpenGl to render 3D models, i.e, models of points that describe triangles.

The generator creates some basic primitives:

• Plane
• Box
• Cone
• Sphere
• Bezier
• Torus

Engine

As refered before, the engine uses OpenGL to render a scene, it also applies transformations, textures, normals and lights. These are passed in a XML file passed by argument to the engine, that follows a syntax that can be found in the xml_syntax file.

To run the executable you must provide the xml as an argument and have all the files (from generator) and textures (if using) in the respective folder.

Functionalities:

• UP Key - Longitudinal positive movement

• DOWN Key - Longitudinal negative movement

• RIGHT Key - Latitudinal positive movement

• LEFT Key - Latitudinal negative movement

• CTRL+UP Keys - Camera's approximation

• CTRL+DOWN Keys - Camera's disapproximation

• W Key - Foward movement

• S Key - Backward movement

• D Key - Movement to the right

• A Key - Movement to the left

• Mouse - Camera's view

• Z Key - Change between different modes of drawing models (Fill, Lines, Points)

• X Key - Show/Hide axis X, Y and Z and movement trajectories

• ESC Key - Free's user from application

Generator

The generator creates 2 files, one containing the points of the triangles and the respective normals, and the other file has the points for the textures. To create a different model with bezier it's recommended to read README.md in bezier_info's folder. Teapot's patch is already provided as an example.

Plane

./generator plane size divisions outFile

Ex: ./generator plane 1 3 plane.3d

Box

./generator box size divisions outFile

Ex: ./generator box 1 3 box.3d

Cone

./generator cone radius height slices stacks outFile

Ex: ./generator cone 1 2 10 10 cone.3d

Sphere

./generator sphere radius slices stacks outFile

Ex: ./generator sphere 1 10 10 sphere.3d

Bezier

./generator bezier inFile level outFile

Ex: ./generator bezier teapot.patch 64 bezier.3d

Torus

./generator torus outterRadius innerRadius slices stacks outFile

Ex: ./generator torus 2.4 2.2 20 20 torus.3d