SergeiMeza

import AVFoundation
import SwiftUI
import RealityKit

#Preview { LightBeamSynthView() }
struct LightBeamSynthView: View {
    @Environment(\.physicalMetrics) var physicalMetrics
    @State var outerCylinderEntity: Entity?
    @State var innerCylinderEntity: Entity?
    @State var touchEntity: Entity?

SergeiMeza

#ifndef MarchingCubesParams_h
#define MarchingCubesParams_h
#include <simd/simd.h>

struct MarchingCubesParams {
    simd_uint3  cells;
    simd_float3 origin;
    simd_float3 cellSize;
    float       isoLevel;
    simd_float3 centerA;

SergeiMeza

#include <metal_stdlib>
using namespace metal;

#define SDFShapeTypeSphere      0u
#define SDFShapeTypeBox         1u
#define SDFShapeTypeTorus       2u
#define SDFShapeTypeRoundedBox  3u
#define SDFShapeTypeBoxFrame    4u
#define SDFShapeTypeLink        5u
#define SDFShapeTypeOctahedron  6u

SergeiMeza

import RealityKit

public struct AnimatingTorusSystem: System {
    public init(scene: RealityKit.Scene) {}
    
    public func update(context: SceneUpdateContext) {
        let entities = context.entities(matching: Self.query,
                                        updatingSystemWhen: .rendering)

        for torus in entities.compactMap({ $0 as? LoopingTorusEntity }) {

SergeiMeza

#ifndef MarchingCubesBlobParams_h
#define MarchingCubesBlobParams_h

#include <simd/simd.h>

typedef struct {
    simd_float3 center;
    float       radius;
} Sphere;

SergeiMeza

#ifndef MarchingCubesColorBlobParams_h
#define MarchingCubesColorBlobParams_h
#include <simd/simd.h>

typedef struct {
    simd_float3 center;
    float       radius;
    simd_float3 color;
    float _pad;
    

SergeiMeza

import Foundation

enum EasingCurve {
    case linear
    case easeIn(Float)
    case easeOut(Float)
    case easeInOut(Float)

    func apply(_ t: Float) -> Float {
        let t = max(0, min(1, t))

SergeiMeza

Videos

• Introduction to Functional Programming Johannes Weiß - https://vimeo.com/100786088
• ReactiveCocoa at MobiDevDay Andrew Sardone - https://vimeo.com/65637501
• The Future Of ReactiveCocoa Justin Spahr-Summers - https://www.youtube.com/watch?v=ICNjRS2X8WM
• Enemy of the State Justin Spahr-Summers - https://www.youtube.com/watch?v=7AqXBuJOJkY
• WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak - https://developer.apple.com/videos/play/wwdc2014/229/
• Functioning as a Functionalist Andy Matuschak - https://www.youtube.com/watch?v=rJosPrqBqrA
• Controlling Complexity in Swift Andy Matuschak - https://realm.io/news/andy-matuschak-controlling-complexity/

SergeiMeza

import CoreLocation

extension CLLocationCoordinate2D {
    func boundingBox(radius: CLLocationDistance) -> (max: CLLocationCoordinate2D, min: CLLocationCoordinate2D) {
        // 0.0000089982311916 ~= 1m
        let offset = 0.0000089982311916 * radius
        let latMax = self.latitude + offset
        let latMin = self.latitude - offset
        
        // 1 degree of longitude = 111km only at equator

SergeiMeza

{
	"europe": {
		"va": "vatican city",
		"ch": "switzerland",
		"ad": "andorra",
		"ee": "estonia",
		"is": "iceland",
		"am": "armenia",
		"al": "albania",
		"cz": "czech republic",