国际惯例先上效果图
Untitled.gif####原理
代码语言：txt复制把模型的material 设置成AVPlayer 就可以了
SCNMaterial * material = [[SCNMaterial alloc]init];
material.diffuse.contents = self.player;
self.showNode.geometry.materials = @[material];####代码
代码语言：txt复制//
// ViewController.m
// palyVoidOnSCNNode
//
// Created by LJP on 2018/5/3.
// Copyright © 2018年 ljp. All rights reserved.
//
#import "ViewController.h"
@interface ViewController () <ARSCNViewDelegate>
@property (nonatomic, strong) IBOutlet ARSCNView *sceneView;
/**
* 添加模型按钮
*/
@property (nonatomic, strong) UIButton * addNodeBtn;
/**
* 把视频加在模型上的按钮
*/
@property (nonatomic, strong) UIButton * playVoidBtn;
/**
* 播放器对象
*/
@property (nonatomic, strong) AVPlayer *player;
/**
* 展示的模型
*/
@property (nonatomic, strong) SCNNode *showNode;
/**
* 调节进度的滑竿
*/
@property (nonatomic, strong) UISlider *slider;
/**
* 调节的时间
*/
@property (nonatomic, assign) CMTime chaseTime;
@end
@implementation ViewControlle
#pragma mark ========================= 生命周期 =========================
- (void)viewDidLoad {
[super viewDidLoad];
[self initUI];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
ARWorldTrackingConfiguration *configuration = [ARWorldTrackingConfiguration new];
[self.sceneView.session runWithConfiguration:configuration];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.sceneView.session pause];
}
#pragma mark ========================= 初始化方法 ========================
- (void)initUI {
self.sceneView.delegate = self;
SCNScene *scene = [SCNScene new];
self.sceneView.scene = scene;
[self.sceneView addSubview:self.addNodeBtn];
[self.sceneView addSubview:self.playVoidBtn];
[self.sceneView addSubview:self.slider];
}
#pragma mark ========================= 私有方法 ==========================
- (void)trySeekToChaseTime{
if (_player.currentItem.status == AVPlayerItemStatusReadyToPlay) {
[self actuallySeekToTime];
}
}
- (void)actuallySeekToTime {
CMTime seekTimeInProgress = self.chaseTime;
[self.player seekToTime:seekTimeInProgress
toleranceBefore:kCMTimeZero
toleranceAfter :kCMTimeZero
completionHandler:^(BOOL finished) {
// [self.player play]; 打开就会自动播放了
}];
}
#pragma mark ========================= 事件处理 ==========================
- (void)clickAddNodeBtn {
[self.sceneView.scene.rootNode addChildNode:self.showNode];
}
- (void)clickPlayVoidBtn {
SCNMaterial * material = [[SCNMaterial alloc]init];
material.diffuse.contents = self.player;
self.showNode.geometry.materials = @[material];
[self.player play];
}
- (void)playerProcess:(UISlider *)slider{
NSString * urlStr = [[NSBundle mainBundle]pathForResource:@"movie.MP4" ofType:nil];
NSURL * url = [NSURL fileURLWithPath:urlStr];
AVAsset * asset = [AVAsset assetWithURL:url];
float totalTime = CMTimeGetSeconds(asset.duration);
[self.player pause];
CMTime newChaseTime = CMTimeMake(totalTime * slider.value * asset.duration.timescale, asset.duration.timescale);
self.chaseTime = newChaseTime;
[self actuallySeekToTime];
}
#pragma mark ========================= 代理方法 ==========================
#pragma mark ========================= 访问器方法 =========================
- (UIButton *)addNodeBtn {
if (_addNodeBtn == nil) {
_addNodeBtn = [UIButton buttonWithType:UIButtonTypeSystem];
_addNodeBtn.frame = CGRectMake(self.view.frame.size.width/4-40, self.view.frame.size.height-160, 80, 48);
[_addNodeBtn setTitle:@"添加模型" forState:0];
[_addNodeBtn addTarget:self action:@selector(clickAddNodeBtn) forControlEvents:UIControlEventTouchUpInside];
}
return _addNodeBtn;
}
- (UIButton *)playVoidBtn {
if (_playVoidBtn == nil) {
_playVoidBtn = [UIButton buttonWithType:UIButtonTypeSystem];
_playVoidBtn.frame = CGRectMake(self.view.frame.size.width/4*3-40, self.view.frame.size.height-160, 80, 48);
[_playVoidBtn setTitle:@"播放视频" forState:0];
[_playVoidBtn addTarget:self action:@selector(clickPlayVoidBtn) forControlEvents:UIControlEventTouchUpInside];
}
return _playVoidBtn;
}
- (UISlider *)slider{
if (!_slider) {
_slider = [[UISlider alloc] initWithFrame:CGRectMake(30, 600, 300, 30)];
_slider.maximumValue = 1;
_slider.minimumValue = 0;
_slider.thumbTintColor = [UIColor blueColor];
_slider.tintColor = [UIColor redColor];
_slider.continuous = YES;
[_slider addTarget:self action:@selector(playerProcess:) forControlEvents:UIControlEventValueChanged];
}
return _slider;
}
-(AVPlayer *)player{
if (!_player) {
AVPlayerItem *playerItem=[self getPlayItem:0];
_player=[AVPlayer playerWithPlayerItem:playerItem];
}
return _player;
}
-(AVPlayerItem *)getPlayItem:(int)videoIndex{
NSString * urlStr = [[NSBundle mainBundle]pathForResource:@"movie.MP4" ofType:nil];
NSURL *url=[NSURL fileURLWithPath:urlStr];
AVPlayerItem *playerItem=[AVPlayerItem playerItemWithURL:url];
return playerItem;
}
- (SCNNode *)showNode {
if (_showNode == nil) {
_showNode = [SCNNode new];
SCNBox * box = [SCNBox boxWithWidth:0.3 height:0.3 length:0.3 chamferRadius:0];
_showNode.geometry = box;
_showNode.position = SCNVector3Make(0, 0.5, -1);
}
return _showNode;
}
@end代码
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