Original Picture

[rudiana587]

Hello,
I'm very interesting with your project, so maybe you can help me how to see the picture before rendered, maybe you can explain it to add some code to see the image before rendered and then the image after rendered into ray tracing

[rafael-fuente]

Hello!
If you replace Sc.render() by Sc.get_distances() in any of the examples you'll avoid almost all rendering algorithm and you'll get a greymap where the darker pixels indicates that the object is nearer from the camera.

In example1.py this will be: (I just remplaced line 42)

from sightpy import *

# define materials to use

gold_metal = Glossy(diff_color = rgb(1., .572, .184), n = vec3(0.15+3.58j, 0.4+2.37j, 1.54+1.91j), roughness = 0.0, spec_coeff = 0.2, diff_coeff= 0.8) # n = index of refraction
bluish_metal = Glossy(diff_color = rgb(0.0, 0, 0.1), n = vec3(1.3+1.91j, 1.3+1.91j, 1.4+2.91j), roughness = 0.2,spec_coeff = 0.5, diff_coeff= 0.3)

floor =  Glossy(diff_color = image("checkered_floor.png", repeat = 80.),   
	            n = vec3(1.2+ 0.3j, 1.2+ 0.3j, 1.1+ 0.3j), roughness = 0.2, spec_coeff = 0.3, diff_coeff= 0.9 )





# Set Scene 
Sc = Scene(ambient_color = rgb(0.05, 0.05, 0.05))


angle = -np.pi/2 * 0.3
Sc.add_Camera(look_from = vec3(2.5*np.sin(angle), 0.25, 2.5*np.cos(angle)  -1.5 ), 
			  look_at = vec3(0., 0.25, -3.), 
	          screen_width = 400 ,
	          screen_height = 300)



Sc.add_DirectionalLight(Ldir = vec3(0.52,0.45, -0.5),  color = rgb(0.15, 0.15, 0.15))


Sc.add(Sphere(material = gold_metal, center = vec3(-.75, .1, -3.),radius =  .6, max_ray_depth = 3))
Sc.add(Sphere(material = bluish_metal, center = vec3(1.25, .1, -3.), radius = .6, max_ray_depth = 3))

Sc.add(Plane(material = floor,  center = vec3(0, -0.5, -3.0), width = 120.0,height = 120.0, u_axis = vec3(1.0, 0, 0), v_axis = vec3(0, 0, -1.0),  max_ray_depth = 3))

#see sightpy/backgrounds
Sc.add_Background("stormydays.png")




# Render 
img = Sc.get_distances()

img.save("EXAMPLE1.png")

img.show()

This is the graymap the script output:

Obtaining the nearest object and the distance that the rays launched from each pixel intersect is the first step that the raytracer does. Then we proceed to obtain the information about the material of the intersecting object, and in what direction intersected to colour the pixel, using material.get_color()

[rudiana587]

Thank you so much, that was helpful.
I wish you good health and success.