From df1d63a2290269911a796bcdd8cbb31f9cb44251 Mon Sep 17 00:00:00 2001
From: Jason Wray <jason@mapbox.com>
Date: Sat, 21 May 2016 14:32:48 -0400
Subject: [PATCH] [ios] Remove custom style layer example

---
 platform/ios/app/MBXViewController.m | 80 +---------------------------
 1 file changed, 1 insertion(+), 79 deletions(-)

diff --git a/platform/ios/app/MBXViewController.m b/platform/ios/app/MBXViewController.m
index 7236e7be9..290a86aae 100644
--- a/platform/ios/app/MBXViewController.m
+++ b/platform/ios/app/MBXViewController.m
@@ -7,8 +7,6 @@
 
 #import <Mapbox/Mapbox.h>
 
-#import <CoreLocation/CoreLocation.h>
-#import <OpenGLES/ES2/gl.h>
 #import <objc/runtime.h>
 
 static const CLLocationCoordinate2D WorldTourDestinations[] = {
@@ -42,7 +40,6 @@ static NSString * const MBXViewControllerAnnotationViewReuseIdentifer = @"MBXVie
 @implementation MBXViewController
 {
     BOOL _isTouringWorld;
-    BOOL _isShowingCustomStyleLayer;
 }
 
 #pragma mark - Setup
@@ -191,9 +188,6 @@ static NSString * const MBXViewControllerAnnotationViewReuseIdentifer = @"MBXVie
         @"Start World Tour",
         @"Add Custom Callout Point",
         @"Remove Annotations",
-        (_isShowingCustomStyleLayer
-         ? @"Hide Custom Style Layer"
-         : @"Show Custom Style Layer"),
         @"Print Telemetry Logfile",
         @"Delete Telemetry Logfile",
         nil];
@@ -319,22 +313,11 @@ static NSString * const MBXViewControllerAnnotationViewReuseIdentifer = @"MBXVie
         [self.mapView removeAnnotations:self.mapView.annotations];
     }
     else if (buttonIndex == actionSheet.firstOtherButtonIndex + 13)
-    {
-        if (_isShowingCustomStyleLayer)
-        {
-            [self removeCustomStyleLayer];
-        }
-        else
-        {
-            [self insertCustomStyleLayer];
-        }
-    }
-    else if (buttonIndex == actionSheet.firstOtherButtonIndex + 14)
     {
         NSString *fileContents = [NSString stringWithContentsOfFile:[self telemetryDebugLogfilePath] encoding:NSUTF8StringEncoding error:nil];
         NSLog(@"%@", fileContents);
     }
-    else if (buttonIndex == actionSheet.firstOtherButtonIndex + 15)
+    else if (buttonIndex == actionSheet.firstOtherButtonIndex + 14)
     {
         NSString *filePath = [self telemetryDebugLogfilePath];
         if ([[NSFileManager defaultManager] isDeletableFileAtPath:filePath]) {
@@ -389,67 +372,6 @@ static NSString * const MBXViewControllerAnnotationViewReuseIdentifer = @"MBXVie
     });
 }
 
-- (void)insertCustomStyleLayer
-{
-    _isShowingCustomStyleLayer = YES;
-
-    static const GLchar *vertexShaderSource = "attribute vec2 a_pos; void main() { gl_Position = vec4(a_pos, 0, 1); }";
-    static const GLchar *fragmentShaderSource = "void main() { gl_FragColor = vec4(0, 1, 0, 1); }";
-    
-    __block GLuint program = 0;
-    __block GLuint vertexShader = 0;
-    __block GLuint fragmentShader = 0;
-    __block GLuint buffer = 0;
-    __block GLuint a_pos = 0;
-    [self.mapView insertCustomStyleLayerWithIdentifier:@"mbx-custom" preparationHandler:^{
-        program = glCreateProgram();
-        vertexShader = glCreateShader(GL_VERTEX_SHADER);
-        fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
-        
-        glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
-        glCompileShader(vertexShader);
-        glAttachShader(program, vertexShader);
-        glShaderSource(fragmentShader, 1, &fragmentShaderSource, NULL);
-        glCompileShader(fragmentShader);
-        glAttachShader(program, fragmentShader);
-        glLinkProgram(program);
-        a_pos = glGetAttribLocation(program, "a_pos");
-        
-        GLfloat background[] = { -1,-1, 1,-1, -1,1, 1,1 };
-        glGenBuffers(1, &buffer);
-        glBindBuffer(GL_ARRAY_BUFFER, buffer);
-        glBufferData(GL_ARRAY_BUFFER, 8 * sizeof(GLfloat), background, GL_STATIC_DRAW);
-    } drawingHandler:^(__unused CGSize size,
-                       __unused CLLocationCoordinate2D centerCoordinate,
-                       __unused double zoomLevel,
-                       __unused CLLocationDirection direction,
-                       __unused CGFloat pitch,
-                       __unused CGFloat perspectiveSkew) {
-        glUseProgram(program);
-        glBindBuffer(GL_ARRAY_BUFFER, buffer);
-        glEnableVertexAttribArray(a_pos);
-        glVertexAttribPointer(a_pos, 2, GL_FLOAT, GL_FALSE, 0, NULL);
-        glDisable(GL_STENCIL_TEST);
-        glDisable(GL_DEPTH_TEST);
-        glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-    } completionHandler:^{
-        if (program) {
-            glDeleteBuffers(1, &buffer);
-            glDetachShader(program, vertexShader);
-            glDetachShader(program, fragmentShader);
-            glDeleteShader(vertexShader);
-            glDeleteShader(fragmentShader);
-            glDeleteProgram(program);
-        }
-    } belowStyleLayerWithIdentifier:@"housenum-label"];
-}
-
-- (void)removeCustomStyleLayer
-{
-    _isShowingCustomStyleLayer = NO;
-    [self.mapView removeCustomStyleLayerWithIdentifier:@"mbx-custom"];
-}
-
 - (void)presentAnnotationWithCustomCallout
 {
     [self.mapView removeAnnotations:self.mapView.annotations];