sourland/computer-graphics

A method to color triangles based on multiple computer graphics algorithms

• Hi, I’m Sourland
• I’m interested in a lot of engineering fields
• I’m currently studying Electrical and Computer Engineering in Aristotle University of Thessaloniki
• I’m looking to collaborate on anything...really
• How to reach me [email protected]
• Currently busy with AcubeSAT Project by SpaceDot
• Lead Software Engineer of PeakSAT project by SpaceDot

computer-graphics's Issues

Create a linear interpolation function

Name: value = interpolate_color(x1, x2, x, C1, C2)

Input:

• x1, x2 -> 2D triangle vertices coordinates
• x ->the point that interpolation is applied to
• C1, C2 -> 3D components of x1, x2 color values

Returns:

• value ->The interpolation of C1, C2.

Create a triangle filling function

A function that fills triangles with colors
Name: Y = shade_triangle(img, verts2d, vcolors, shade_t = "flat")
Input:

• img -> an NxMx3 array with existing triangles
• verts2d -> a 3x2 array containing triangle vertices coordinates
• vcolors -> a 3x3 array containing the rgb value of each vertice ([0,1] range)
• shade_t -> the algorithm alternations ("Flat" or "Gouraud")

Returns:

• Y -> a NxMx3 array containing (Ri, Gi, Bi) color components for every i point of a triangle, with the pre-existing triangles

• Flat variation: Every Triangle gets one color: the vertices color mean

• Gouraud variation: Every pixel of the triangle is colored using linear interpolation from the triangle's vertices

  1. Interpolation between vertices V1,V2 (Point A)
  2. Interpolation between vertices V1,V3 (Point B)
  3. Interpolation between points A,B (Point P - Final)
  4. Use scanline