Add minimum viable product

SPRootViewController.m

@@ -0,0 +1,78 @@
+#import "SPRootViewController.h"
+
+#import "CALayer.h"
+#import "CAPackage.h"
+#import "CAState.h"
+#import "CAStateController.h"
+
+@interface SPRootViewController ()
+- (CGImageRef)getImage:(NSString *)named;
+@end
+
+@implementation SPRootViewController
+
+- (void)loadView {
+  [super loadView];
+
+  // Let's get this party started! Load our package.
+  NSURL *caarPath = [[NSBundle bundleForClass:NSClassFromString(@"PKPass")]
+      URLForResource:@"ShredderSheet"
+       withExtension:@"caar"];
+  CAPackage *package = [CAPackage packageWithContentsOfURL:caarPath
+                                                      type:kCAPackageTypeArchive
+                                                   options:nil
+                                                     error:nil];
+
+  // Determine the frame of the unarchived root layer.
+  CALayer *rootLayer = [package rootLayer];
+  CGRect rootLayerFrame = [rootLayer frame];
+
+  // We can create a new view to harass.
+  // Exhilerating!
+  UIView *layerView = [[UIView alloc] initWithFrame:rootLayerFrame];
+  [[layerView layer] addSublayer:rootLayer];
+  [self.view addSubview:layerView];
+
+  // Ensure our package's root layer does similar, I... think.
+  [[package publishedObjectWithName:@"Root"] setFrame:rootLayerFrame];
+
+  // Oh, our very own state controller!
+  // We've grown up so quickly.
+  CAStateController *stateController =
+      [[CAStateController alloc] initWithLayer:rootLayer];
+
+  // Configure our initial state.
+  CAState *shreddingState = [[rootLayer states] objectAtIndex:2];
+
+  [stateController setInitialStatesOfLayer:rootLayer];
+  [stateController setState:shreddingState
+                    ofLayer:rootLayer
+            transitionSpeed:1.0f];
+
+  // Have our wonderful, extremely 2011/2012-esque metal design.
+  // It's local! There's no reason not to.
+  [[package publishedObjectWithName:@"shredderFront"]
+      setContents:(id)[self getImage:@"ShredderMetal"]];
+  [[package publishedObjectWithName:@"shredderBack"]
+      setContents:(id)[self getImage:@"ShredderMetal"]];
+
+  // Set what we're shredding.
+  [[package publishedObjectWithName:@"cardFrontUnshredded"]
+      setContents:(id)[[UIColor redColor] CGColor]];
+  [[package publishedObjectWithName:@"cardFrontShredded"]
+      setContents:(id)[[UIColor blueColor] CGColor]];
+  [[package publishedObjectWithName:@"cardBackUnshredded"]
+      setContents:(id)[[UIColor blueColor] CGColor]];
+}
+
+- (CGImageRef)getImage:(NSString *)named {
+  NSBundle *passKitBundle =
+      [NSBundle bundleForClass:NSClassFromString(@"PKPass")];
+  NSString *filename = [NSString stringWithFormat:@"%@@2x", named];
+  NSString *path = [passKitBundle pathForResource:filename ofType:@"png"];
+
+  UIImage *image = [UIImage imageWithContentsOfFile:path];
+  return [image CGImage];
+}
+
+@end