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sandofskysandofsky
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Add snowflake example.
1 parent 8909eb5 commit fc5397a

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6 files changed

+152
-3
lines changed

6 files changed

+152
-3
lines changed

‎AdvancedGraphics/AdvancedGraphics.xcodeproj/project.pbxproj

+6
Original file line numberDiff line numberDiff line change
@@ -19,6 +19,7 @@
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B59C70DE1B7138570064D94F /* yosemite.jpg in Resources */ = {isa = PBXBuildFile; fileRef = B59C70DD1B7138570064D94F /* yosemite.jpg */; };
2020
B59C70E01B715DE10064D94F /* yosemite-optimized.png in Resources */ = {isa = PBXBuildFile; fileRef = B59C70DF1B715DE10064D94F /* yosemite-optimized.png */; };
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B59C70E31B754DC20064D94F /* ExpandingImageViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B59C70E21B754DC20064D94F /* ExpandingImageViewController.m */; };
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B5C0EBCD1B75C9FE008B31E2 /* SnowViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B5C0EBCC1B75C9FE008B31E2 /* SnowViewController.m */; };
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/* End PBXBuildFile section */
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/* Begin PBXFileReference section */
@@ -42,6 +43,8 @@
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B59C70DF1B715DE10064D94F /* yosemite-optimized.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "yosemite-optimized.png"; sourceTree = "<group>"; };
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B59C70E11B754DC20064D94F /* ExpandingImageViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ExpandingImageViewController.h; sourceTree = "<group>"; };
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B59C70E21B754DC20064D94F /* ExpandingImageViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ExpandingImageViewController.m; sourceTree = "<group>"; };
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B5C0EBCB1B75C9FE008B31E2 /* SnowViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SnowViewController.h; sourceTree = "<group>"; };
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B5C0EBCC1B75C9FE008B31E2 /* SnowViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = SnowViewController.m; sourceTree = "<group>"; };
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/* End PBXFileReference section */
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/* Begin PBXFrameworksBuildPhase section */
@@ -93,6 +96,8 @@
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B59C70E21B754DC20064D94F /* ExpandingImageViewController.m */,
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B50737531B75655A00C831B5 /* ImplicitAnimationViewController.h */,
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B50737541B75655A00C831B5 /* ImplicitAnimationViewController.m */,
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B5C0EBCB1B75C9FE008B31E2 /* SnowViewController.h */,
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B5C0EBCC1B75C9FE008B31E2 /* SnowViewController.m */,
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);
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path = AdvancedGraphics;
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sourceTree = "<group>";
@@ -182,6 +187,7 @@
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B59C70DC1B7133B80064D94F /* StutteringViewController.m in Sources */,
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B59C70D91B71311C0064D94F /* AnimationDemoViewController.m in Sources */,
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B59C70BF1B7129E80064D94F /* main.m in Sources */,
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B5C0EBCD1B75C9FE008B31E2 /* SnowViewController.m in Sources */,
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B59C70E31B754DC20064D94F /* ExpandingImageViewController.m in Sources */,
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B50737551B75655A00C831B5 /* ImplicitAnimationViewController.m in Sources */,
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);

‎AdvancedGraphics/AdvancedGraphics/Assets.xcassets/snowflake.imageset/Contents.json

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,21 @@
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{
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"images" : [
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{
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"idiom" : "universal",
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"scale" : "1x"
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},
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{
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"idiom" : "universal",
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"filename" : "snowflake.png",
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"scale" : "2x"
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},
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{
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"idiom" : "universal",
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"scale" : "3x"
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}
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],
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"info" : {
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"version" : 1,
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"author" : "xcode"
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}
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}

‎AdvancedGraphics/AdvancedGraphics/Assets.xcassets/snowflake.imageset/snowflake.png

4.02 KB
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‎AdvancedGraphics/AdvancedGraphics/Base.lproj/Main.storyboard

+48-3
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@@ -56,9 +56,29 @@
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<segue destination="CKf-3b-yNF" kind="show" id="1xv-TZ-qoV"/>
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</connections>
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</tableViewCell>
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<tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" textLabel="eUT-pX-xtb" rowHeight="64" style="IBUITableViewCellStyleDefault" id="FNx-1f-hio" userLabel="Expanding Image">
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<tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" textLabel="be8-tw-OXz" rowHeight="64" style="IBUITableViewCellStyleDefault" id="A0A-MT-o9A" userLabel="Snow Fall">
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<rect key="frame" x="0.0" y="192" width="600" height="64"/>
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<autoresizingMask key="autoresizingMask"/>
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<tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="A0A-MT-o9A" id="5Yz-vC-uDk">
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<rect key="frame" x="0.0" y="0.0" width="600" height="63.5"/>
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<autoresizingMask key="autoresizingMask"/>
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<subviews>
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<label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Snow Fall" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="be8-tw-OXz">
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<rect key="frame" x="15" y="0.0" width="570" height="63.5"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" type="system" pointSize="16"/>
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<color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
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<nil key="highlightedColor"/>
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</label>
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</subviews>
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</tableViewCellContentView>
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<connections>
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<segue destination="7VV-RR-zDi" kind="show" id="Wbh-SV-RbW"/>
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</connections>
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</tableViewCell>
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<tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" textLabel="eUT-pX-xtb" rowHeight="64" style="IBUITableViewCellStyleDefault" id="FNx-1f-hio" userLabel="Expanding Image">
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<rect key="frame" x="0.0" y="256" width="600" height="64"/>
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<autoresizingMask key="autoresizingMask"/>
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<tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="FNx-1f-hio" id="iXt-v8-gIK">
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<rect key="frame" x="0.0" y="0.0" width="600" height="63.5"/>
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<autoresizingMask key="autoresizingMask"/>
@@ -77,7 +97,7 @@
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</connections>
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</tableViewCell>
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<tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" textLabel="Gsq-uu-njt" rowHeight="64" style="IBUITableViewCellStyleDefault" id="03p-to-5Uk" userLabel="Stuttering Table View">
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<rect key="frame" x="0.0" y="256" width="600" height="64"/>
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<rect key="frame" x="0.0" y="320" width="600" height="64"/>
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<autoresizingMask key="autoresizingMask"/>
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<tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="03p-to-5Uk" id="ZVs-fR-AOL">
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<rect key="frame" x="0.0" y="0.0" width="600" height="63.5"/>
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</objects>
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<point key="canvasLocation" x="1175" y="616"/>
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</scene>
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<!--Snow Fall-->
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<scene sceneID="s3v-q3-tvz">
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<objects>
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<viewController id="7VV-RR-zDi" customClass="SnowViewController" sceneMemberID="viewController">
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<layoutGuides>
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<viewControllerLayoutGuide type="top" id="XNE-F9-nak"/>
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<viewControllerLayoutGuide type="bottom" id="GCI-jt-ue7"/>
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</layoutGuides>
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<view key="view" contentMode="scaleToFill" id="zNW-wP-tOm">
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<rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
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<color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
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</view>
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<navigationItem key="navigationItem" title="Snow Fall" id="G8c-w9-xlw">
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<barButtonItem key="rightBarButtonItem" title="Start" id="W02-DY-KIa">
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<connections>
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<action selector="didTapStart:" destination="7VV-RR-zDi" id="NPh-Zm-d8p"/>
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</connections>
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</barButtonItem>
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</navigationItem>
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</viewController>
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<placeholder placeholderIdentifier="IBFirstResponder" id="jFM-5G-Ro0" userLabel="First Responder" sceneMemberID="firstResponder"/>
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</objects>
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<point key="canvasLocation" x="2145" y="824"/>
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</scene>
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<!--Implicit Animation-->
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<scene sceneID="Iuk-gU-4nU">
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<objects>
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</viewController>
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<placeholder placeholderIdentifier="IBFirstResponder" id="DfV-wS-hOK" userLabel="First Responder" sceneMemberID="firstResponder"/>
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</objects>
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<point key="canvasLocation" x="2751" y="1547"/>
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<point key="canvasLocation" x="1991" y="2211"/>
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</scene>
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<!--Navigation Controller-->
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<scene sceneID="Tkx-PO-Jbb">

‎AdvancedGraphics/AdvancedGraphics/SnowViewController.h

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//
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// SnowViewController.h
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// AdvancedGraphics
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//
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// Created by Benjamin Sandofsky on 8/7/15.
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// Copyright © 2015 Chroma Noir LLC. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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@interface SnowViewController : UIViewController
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@end
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@interface SnowLayer : CALayer
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@end

‎AdvancedGraphics/AdvancedGraphics/SnowViewController.m

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//
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// SnowViewController.m
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// AdvancedGraphics
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//
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// Created by Benjamin Sandofsky on 8/7/15.
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// Copyright © 2015 Chroma Noir LLC. All rights reserved.
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//
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#import "SnowViewController.h"
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#define SNOW_COUNT 20
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@interface SnowViewController ()
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@property (nonatomic, strong) NSMutableArray<SnowLayer *> *snowQueue;
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@end
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@implementation SnowViewController
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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NSMutableArray<SnowLayer *> *array = [NSMutableArray array];
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UIImage *snowFlakeImage = [UIImage imageNamed:@"snowflake"];
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for (int i = 0; i < SNOW_COUNT; i++){
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SnowLayer *snow = [[SnowLayer alloc] init];
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snow.contents = (id)snowFlakeImage.CGImage;
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snow.frame = CGRectMake(0, -40, 40, 40);
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[self.view.layer addSublayer:snow];
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[array addObject:snow];
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}
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self.snowQueue = array;
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}
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- (IBAction)didTapStart:(UIBarButtonItem *)sender {
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[CATransaction begin];
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[CATransaction setAnimationDuration:2.0];
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CGFloat offset = 0.0;
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for (SnowLayer *snow in self.snowQueue) {
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CABasicAnimation *animation = [CABasicAnimation animation];
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CGFloat x = (CGFloat)arc4random() / (CGFloat)UINT32_MAX * self.view.layer.bounds.size.width;
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CGPoint p = CGPointMake(x, -20.0);
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animation.fromValue = [NSValue valueWithCGPoint:p];
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animation.keyPath = @"position";
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p.y = self.view.frame.size.height + 20.0;
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animation.toValue = [NSValue valueWithCGPoint:p];
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CGFloat randomOffset = (CGFloat)arc4random() / (CGFloat)UINT32_MAX;
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offset += 0.5 + randomOffset / 2.0;
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animation.beginTime = CACurrentMediaTime() + offset;
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animation.repeatCount = 1000;
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[snow addAnimation:animation forKey:@"snowFall"];
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NSLog(@"Snowed: %f", x);
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}
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[CATransaction commit];
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}
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@end
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@implementation SnowLayer
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@end

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