/*

 Copyright (C) 2015-2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 N-body controller object for visualizing the simulation.

 */

#import <simd/simd.h>

#import <QuartzCore/CAMetalLayer.h>

#import <Metal/Metal.h>

@interface NBodyVisualizer : NSObject

// Query to determine if all resources were instantiated

@property (readonly) BOOL haveVisualizer;

// Generate all the resources necessary for N-body simulation

@property (nullable, nonatomic, setter=acquire:) id<MTLDevice> device;

// Render a frame for N-body simaulation

@property (nullable, nonatomic, setter=render:) id<CAMetalDrawable> drawable;

// Orthographic projection configuration type

@property uint32_t config;

// Coordinate points on the Eunclidean axis of simulation

@property (nonatomic) simd::float3 axis;

// Aspect ratio

@property (nonatomic) float aspect;

// Total number of frames to be rendered for a N-body simulation type

@property (nonatomic) uint32_t frames;

// The number of point particels

@property (nonatomic) uint32_t particles;

// Texture resolution.  The default is 64x64.

@property (nonatomic) uint32_t texRes;

// Becomes true once all the frames for a simulation type are rendered

@property (readonly) BOOL isComplete;

// Current active simulation type

@property (readonly) uint32_t active;

// Current frame being rendered

@property (readonly) uint32_t frame;

@end