Scene Kit Session WWDC 2013/Sources/Slides/ASCSlideLight.m
/* |
File: ASCSlideLight.m |
Abstract: Illustrates the light attribute. |
Version: 1.1 |
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple |
Inc. ("Apple") in consideration of your agreement to the following |
terms, and your use, installation, modification or redistribution of |
this Apple software constitutes acceptance of these terms. If you do |
not agree with these terms, please do not use, install, modify or |
redistribute this Apple software. |
In consideration of your agreement to abide by the following terms, and |
subject to these terms, Apple grants you a personal, non-exclusive |
license, under Apple's copyrights in this original Apple software (the |
"Apple Software"), to use, reproduce, modify and redistribute the Apple |
Software, with or without modifications, in source and/or binary forms; |
provided that if you redistribute the Apple Software in its entirety and |
without modifications, you must retain this notice and the following |
text and disclaimers in all such redistributions of the Apple Software. |
Neither the name, trademarks, service marks or logos of Apple Inc. may |
be used to endorse or promote products derived from the Apple Software |
without specific prior written permission from Apple. Except as |
expressly stated in this notice, no other rights or licenses, express or |
implied, are granted by Apple herein, including but not limited to any |
patent rights that may be infringed by your derivative works or by other |
works in which the Apple Software may be incorporated. |
The Apple Software is provided by Apple on an "AS IS" basis. APPLE |
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION |
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS |
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND |
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. |
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL |
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, |
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED |
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), |
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE |
POSSIBILITY OF SUCH DAMAGE. |
Copyright (C) 2014 Apple Inc. All Rights Reserved. |
*/ |
#import "ASCPresentationViewController.h" |
#import "ASCSlideTextManager.h" |
#import "ASCSlide.h" |
#import "Utils.h" |
@interface ASCSlideLight : ASCSlide |
@end |
@implementation ASCSlideLight { |
SCNNode *_lightNode; |
SCNNode *_lightOffImageNode; |
SCNNode *_lightOnImageNode; |
} |
- (NSUInteger)numberOfSteps { |
return 3; |
} |
- (void)presentStepIndex:(NSUInteger)index withPresentionViewController:(ASCPresentationViewController *)presentationViewController { |
[SCNTransaction begin]; |
[SCNTransaction setAnimationDuration:0.0]; |
switch (index) { |
case 0: |
{ |
// Set the slide's title and subtitle and add some text |
self.textManager.title = @"Node Attributes"; |
self.textManager.subtitle = @"Lights"; |
[self.textManager addBullet:@"SCNLight" atLevel:0]; |
[self.textManager addBullet:@"Four light types" atLevel:0]; |
[self.textManager addBullet:@"Omni" atLevel:1]; |
[self.textManager addBullet:@"Directional" atLevel:1]; |
[self.textManager addBullet:@"Spot" atLevel:1]; |
[self.textManager addBullet:@"Ambient" atLevel:1]; |
break; |
} |
case 1: |
{ |
// Add some code |
SCNNode *codeExampleNode = [self.textManager addCode: |
@"aNode.#light# = [SCNLight light]; \n" |
@"aNode.light.type = SCNLightTypeOmni;"]; |
codeExampleNode.position = SCNVector3Make(14, 11, 1); |
// Add a light to the scene |
_lightNode = [SCNNode node]; |
_lightNode.light = [SCNLight light]; |
_lightNode.light.type = SCNLightTypeOmni; |
_lightNode.light.color = [NSColor blackColor]; // initially off |
[_lightNode.light setAttribute:@30.0 forKey:SCNLightAttenuationStartKey]; |
[_lightNode.light setAttribute:@40.0 forKey:SCNLightAttenuationEndKey]; |
_lightNode.position = SCNVector3Make(5, 3.5, 0); |
[self.contentNode addChildNode:_lightNode]; |
// Load two images to help visualize the light (on and off) |
_lightOffImageNode = [SCNNode asc_planeNodeWithImageNamed:@"light-off" size:7 isLit:NO]; |
_lightOnImageNode = [SCNNode asc_planeNodeWithImageNamed:@"light-on" size:7 isLit:NO]; |
_lightOnImageNode.opacity = 0; |
[_lightNode addChildNode:_lightOnImageNode]; |
[_lightNode addChildNode:_lightOffImageNode]; |
break; |
} |
case 2: |
{ |
// Switch the light on |
[SCNTransaction begin]; |
[SCNTransaction setAnimationDuration:1.0]; |
{ |
_lightNode.light.color = [NSColor colorWithCalibratedRed:1 green:1 blue:0.8 alpha:1]; |
_lightOnImageNode.opacity = 1.0; |
_lightOffImageNode.opacity = 0.0; |
} |
[SCNTransaction commit]; |
break; |
} |
} |
[SCNTransaction commit]; |
} |
- (void)willOrderOutWithPresentionViewController:(ASCPresentationViewController *)presentationViewController { |
[SCNTransaction begin]; |
{ |
// Switch the light off |
_lightNode.light = nil; |
} |
[SCNTransaction commit]; |
} |
@end |
Copyright © 2014 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2014-01-07