Fdf

’fil de fer’ in French which means wireframe model.

Introduction

• This project is about creating a simple wireframe model representation of a 3D landscape by linking various points (x, y, z) thanks to line segments (edges).

• The fdf represent the model in isometric projection.

• The coordinates of the landscape are stored in a .fdf file passed as a parameter to your program. Here is an example:

  $>cat 42.fdf
  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
  0  0  10 10 0  0  10 10 0  0  0  10 10 10 10 10 0  0  0
  0  0  10 10 0  0  10 10 0  0  0  0  0  0  0  10 10 0  0
  0  0  10 10 0  0  10 10 0  0  0  0  0  0  0  10 10 0  0
  0  0  10 10 10 10 10 10 0  0  0  0  10 10 10 10 0  0  0
  0  0  0  10 10 10 10 10 0  0  0  10 10 0  0  0  0  0  0
  0  0  0  0  0  0  10 10 0  0  0  10 10 0  0  0  0  0  0
  0  0  0  0  0  0  10 10 0  0  0  10 10 10 10 10 10 0  0
  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
  $>

  Each number represents a point in space:
  ◦ The horizontal position corresponds to its axis.
  ◦ The vertical position corresponds to its ordinate.
  ◦ The value corresponds to its altitude.

Process

• When the program runs, it initially validates the argument.
  ◦ Validation follows three rules.
  
  ◦ Verify that the contents of the file fit the rules and format. ◦ And parse the file into a instruction structure while reading it.
  
• Create and fill a map that is a double array of coordinates.
  
  ◦ The size of the map is calculated by the number of rows and columns in the instruction.
  ◦ Multiply the size by the length to find the size to display on the window.
  ◦ If know the size of the map, can also get the size of the window.
  
• Visualize calculating the size
  
• If the window becomes too big, apply the scale. ◦ When the scale exceeds 50, the program ends.
  
• Create the window and image to print.
  ◦ Using the graphics library minilibx.
  
• Draw a wire frame to display in the generated image. ◦ The method of drawing a wire frame uses two coordinates to create a line and fills that line.
  
  ◦ And the beginning of the pixel is the top left of the image.
  
  ◦ Visualize how to calculate coordinates.
  
  ◦ Visualize how to draw a line using two calculated coordinates.
  

Makefile

Rules	Description
all	Compile a program fdf.
clean	Remove all the temporary generated files.
fclean	Remove all the generated files.
re	Remove all the generated files and compile a fdf.

Usage

$> ./fdf [fdf file]