peterstace / grayt Goto Github PK

Should contain:

• Geometry
• Camera
• Exposure control

Possibilities:

• Oct-tree.
• K-d tree.
• R tree.

Research the different types, and work out which is best. Then implement and speed test.

http://web.archive.org/web/20160305200308/http://freespace.virgin.net/hugo.elias/graphics/x_posure.htm

Should be able to use N worker threads for computation.

To be specified using the -j flag.

There is no actual code change here. Just updating flags and variable names.

Currently, Entitys only allow a single Surface. This is a bit annoying for things that are made up of multiple surfaces such as triangles. It would be better to have multiple Surfaces, since they could then share Entity properties such as colour and BRDFs.

This has a few parts that need to be completed:

• All unit tests should pass (they currently don't).
• Create a build script.
• Set up CI in the cloud somewhere.

Example:

package main

import (
	. "github.com/peterstace/grayt/examples/cornellbox"
	. "github.com/peterstace/grayt/grayt"
)

func scene() Scene {
	const d = 1.3
	const gap = 0.05
	return Scene{
		Camera: Cam(d),
		Objects: Group(
			Floor,
			Ceiling,
			CeilingLight().With(Emittance(5.0)),
			AlignedSquare(Vect(-10, -10, d), Vect(10, 10, d)),
		),
	}
}

func main() {
	Run("cornellbox_mirrors", scene())
}

All planes currently have the same form. They are specified by an anchor point and a normal vector (2 vectors == 6 float64s == 48 bytes). For planes aligned to an axis, it would be more efficient to specify them as an axis), a direction for the normal, and a position on that axis (axis and direction is 1 byte, position is 8 bytes = 9 bytes). The intersection algorithm would also be less computationally expensive.

This issue has been opened automaticaly because we think you are using satori/uuid in your code. Unfortunately, satori/uuid has a critical defect where it doesn't generate random UUIDV4s satori/go.uuid#73 and should be replaced as the maintainer has been unresponsive for 5 months with the bug still open. Alternative packages you should consider: https://github.com/google/uuid https://github.com/pborman/uuid