stoeckley

kernel vec4 coreImageKernel(__color startColor, __color endColor)
{
	vec2 point = destCoord();

	float angle = atan(point.y, point.x) + radians(180.0);
	//Start from the upper middle, not the left middle
	angle += radians(90.0);
	angle = mod(angle, radians(360.0));

	float fraction = angle / radians(360.0);

stoeckley

Spherical cap cone analytic solution is a 1d problem, since the cone cap sphere slides along the ray. The intersection point to empty space sphere is always on the ray.

S : radius of cone cap sphere at t=1
r(d) : cone cap sphere radius at distance d

r(d) = d*S

p = distance of current SDF sample
SDF(p) = sdf function result at location p
x = distance after conservative step

stoeckley

// https://www.cs.rit.edu/~ncs/color/t_convert.html
struct RGB {
    // Percent
    let r: Float // [0,1]
    let g: Float // [0,1]
    let b: Float // [0,1]
    
    static func hsv(r: Float, g: Float, b: Float) -> HSV {
        let min = r < g ? (r < b ? r : b) : (g < b ? g : b)
        let max = r > g ? (r > b ? r : b) : (g > b ? g : b)

stoeckley

import AVFoundation
import Foundation

// The maximum number of audio buffers in flight. Setting to two allows one
// buffer to be played while the next is being written.
private let kInFlightAudioBuffers: Int = 2

// The number of audio samples per buffer. A lower value reduces latency for
// changes but requires more processing but increases the risk of being unable
// to fill the buffers in time. A setting of 1024 represents about 23ms of

stoeckley

Xcode VIM

This document is a scratchpad for helping me learn commonly used actions in Xcode's VIM mode.

Commands are case-sensitive. A command of N means pressing shift + n on the keyboard.

[Formatting is a WIP]

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Normal Mode Commands

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