how to ray trace in matlab in matlab

To perform ray tracing in MATLAB, we can use the built-in function raytrace. Here's an example code that demonstrates how to use it:

main.m
% Define the object to be traced (in this case, a sphere)
obj.type = 'sphere';
obj.center = [0 0 -5];
obj.radius = 2;

% Define the camera parameters
campos = [0 0 0];   % camera position
camtarget = [0 0 -1];   % camera target
camup = [0 1 0];    % camera up vector
camva = 20;    % camera field of view (in degrees)

% Define the output image size
img_size = [512 512];

% Call the raytrace function
img = raytrace(campos, camtarget, camup, camva, img_size, obj);

% Display the image
imshow(img);
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This code creates a simple scene consisting of a sphere and a camera, and then calls the raytrace function to render the scene from the camera's point of view. The resulting image is displayed using the imshow function.

Note that the raytrace function can be customized with additional parameters to control the rendering process, such as the number of rays per pixel and the type of shading to use.