Subversion Repositories gelsvn

#import "BasicOpenGLView.h"

#include <GEL/GLGraphics/MeshEditor.h>

using namespace CGLA;

using namespace GLGraphics;

MeshEditor me;

// ==================================

#pragma mark ---- Error Reporting ----

// error reporting as both window message and debugger string

void reportError (char * strError, int where)

{

    NSMutableDictionary *attribs = [NSMutableDictionary dictionary];

    [attribs setObject: [NSFont fontWithName: @"Monaco" size: 9.0f] forKey: NSFontAttributeName];

    [attribs setObject: [NSColor whiteColor] forKey: NSForegroundColorAttributeName];

    //	gErrorTime = getElapsedTime ();

	NSString * errString = [NSString stringWithFormat:@"Error: %s @ line %d", strError, where ];

	NSLog (@"%@\n", errString);

}

// ---------------------------------

// if error dump gl errors to debugger string, return error

GLenum glReportError (int where = -1)

{

	GLenum err = glGetError();

	if (GL_NO_ERROR != err)

		reportError ((char *) gluErrorString (err), where);

	return err;

}

#pragma mark ---- OpenGL Utils ----

// ---------------------------------

// ===================================

@implementation BasicOpenGLView

// ---------------------------------

// handles resizing of GL need context update and if the window dimensions change, a

// a window dimension update, reseting of viewport and an update of the projection matrix

- (void) reshape

{

    NSRect backRect = [self convertRectToBacking:[self bounds]];

    glViewport (0, 0, NSWidth(backRect), NSHeight(backRect));

	me.reshape(NSWidth(backRect),NSHeight(backRect));

}

// ---------------------------------

// ---------------------------------

// per-window timer function, basic time based animation preformed here

- (void)animationTimer:(NSTimer *)timer

{

    if(me.try_spinning_ball())

        [self setNeedsDisplay: YES];

}

-(IBAction)save_window_to_pasteboard:(id)sender

{

    // Get the pasteboard.

    NSPasteboard *pb = [NSPasteboard generalPasteboard];

    // Telling the pasteboard what type of data we're going to send in

    [pb declareTypes:[NSArray arrayWithObjects:NSPasteboardTypePNG,nil] owner:self];

    // Get the size of the image in a retina safe way

    NSRect backRect = [self convertRectToBacking: [self bounds]];

    int W = NSWidth(backRect);

    int H = NSHeight(backRect);

    // Create image. Note no alpha channel. I don't copy that.

    NSBitmapImageRep *rep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: NULL

                                                                    pixelsWide: W

                                                                    pixelsHigh: H

                                                                 bitsPerSample: 8

                                                               samplesPerPixel: 3

                                                                      hasAlpha: NO

                                                                      isPlanar: NO

                                                                colorSpaceName: NSCalibratedRGBColorSpace

                                                                   bytesPerRow: 3*W

                                                                  bitsPerPixel: 0];

    // The following block does the actual reading of the image

    glPushAttrib(GL_PIXEL_MODE_BIT); // Save state about reading buffers

    glReadBuffer(GL_FRONT);

    glPixelStorei(GL_PACK_ALIGNMENT, 1); // Dense packing

    glReadPixels(0, 0, W, H, GL_RGB, GL_UNSIGNED_BYTE, [rep bitmapData]);

    glPopAttrib();

    // So we need one more image, since we must flip its orientation.

    NSBitmapImageRep* flipped =  [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: NULL

                                                                         pixelsWide: W

                                                                         pixelsHigh: H

                                                                      bitsPerSample: 8

                                                                    samplesPerPixel: 3

                                                                           hasAlpha: NO

                                                                           isPlanar: NO

                                                                     colorSpaceName: NSCalibratedRGBColorSpace

                                                                        bytesPerRow: 3*W

                                                                       bitsPerPixel: 0];

    // Primitive double for loop flipping the row order. Should be a better way. Can't find it.

    for(int j=1; j< H+1; ++j)

        for(int i=0;i<W;++i)

        {

            NSUInteger pixels[4];

            [rep getPixel: pixels atX:i y:j];

            [flipped setPixel: pixels atX:i y:H-j];

        }

    // Converting the representation to PNG and sending it to the pasteboard (with type indicated)

    [pb setData:[flipped representationUsingType:NSPNGFileType properties:nil] forType:NSPasteboardTypePNG];

}

-(void)keyDown:(NSEvent *)theEvent

{

    switch ([theEvent keyCode]) {

        case 123:

            me.key_left();

            break;

        case 124:

            me.key_right();

            break;

        case 126:

            me.key_up();

            break;

        case 125:

            me.key_down();

            break;

        case 115:

            me.key_home();

            break;

        case 119:

            me.key_end();

            break;

        default:

            NSString *characters = [theEvent characters];

            if ([characters length]) {

                unichar character = [characters characterAtIndex:0];

                me.keyparse(character);

            }

            break;

    }

    [self setNeedsDisplay: YES];

}

// ---------------------------------

- (void)mouseDown:(NSEvent *)theEvent // trackball

{

    if ([theEvent modifierFlags] & NSAlternateKeyMask) // send to pan

		[self rightMouseDown:theEvent];

	else {

        NSPoint location = [self convertPoint:[theEvent locationInWindow] fromView:nil];

        [[self openGLContext] makeCurrentContext];

        Vec2i pos(location.x,location.y);

        pos *= int([[self window]backingScaleFactor]);

        if([theEvent modifierFlags] & NSShiftKeyMask)

            me.grab_mesh(pos);

        else if([theEvent modifierFlags] & NSControlKeyMask) {

            if(me.select_vertex(pos))

                [self setNeedsDisplay: YES];

        }

        else

            me.grab_ball(ROTATE_ACTION,pos);

	}

}

// ---------------------------------

- (void)rightMouseDown:(NSEvent *)theEvent // pan

{

	NSPoint location = [self convertPoint:[theEvent locationInWindow] fromView:nil];

    Vec2i pos(location.x,location.y);

    pos *= int([[self window]backingScaleFactor]);

    me.grab_ball(PAN_ACTION,pos);

}

// ---------------------------------

- (void)otherMouseDown:(NSEvent *)theEvent //dolly

{

}

// ---------------------------------

- (void)mouseUp:(NSEvent *)theEvent

{

    me.release_mesh();

    me.release_ball();

}

// ---------------------------------

- (void)rightMouseUp:(NSEvent *)theEvent

{

	[self mouseUp:theEvent];

}

// ---------------------------------

- (void)otherMouseUp:(NSEvent *)theEvent

{

	[self mouseUp:theEvent];

}

// ---------------------------------

- (void)mouseDragged:(NSEvent *)theEvent

{

	NSPoint location = [self convertPoint:[theEvent locationInWindow] fromView:nil];

    Vec2i pos(location.x,location.y);

    pos *= int([[self window]backingScaleFactor]);

//    NSLog(@"Pos <%d %d> ", pos[0], pos[1]);

    [[self openGLContext] makeCurrentContext];

    if(!me.drag_mesh(pos))

        me.roll_ball(pos);

    [self setNeedsDisplay: YES];

}

// ---------------------------------

- (void)scrollWheel:(NSEvent *)theEvent

{

    Vec2i pos(0,300);

    me.grab_ball(ZOOM_ACTION,pos);

    pos[1] -= 3*[theEvent deltaY];

    me.roll_ball(pos);

    me.release_ball();

    [self setNeedsDisplay: YES];

}

// ---------------------------------

- (void)rightMouseDragged:(NSEvent *)theEvent

{

	[self mouseDragged: theEvent];

}

// ---------------------------------

- (void)otherMouseDragged:(NSEvent *)theEvent

{

	[self mouseDragged: theEvent];

}

// ---------------------------------

- (void) drawRect:(NSRect)rect

{

    NSOpenGLContext* ctxt = [self openGLContext];

    if(ctxt != nil) {

        [ctxt makeCurrentContext];

        me.display(int([[self window]backingScaleFactor]));

        [ctxt flushBuffer];

    }

}

// ---------------------------------

// set initial OpenGL state (current context is set)

// called after context is created

- (void) prepareOpenGL

{

    [[self openGLContext] makeCurrentContext];

    GLint swapInt = 1;

    [[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval]; // set to vbl sync

    me.init();

    NSLog(@"OpenGL Initialized");

}

// ---------------------------------

// this can be a troublesome call to do anything heavyweight, as it is called on window moves, resizes, and display config changes.  So be

// careful of doing too much here.

- (void) update // window resizes, moves and display changes (resize, depth and display config change)

{

	[super update];

	if (![self inLiveResize])  {// if not doing live resize

	}

}

// ---------------------------------

-(id) initWithFrame: (NSRect) frameRect

{

	self = [super initWithFrame: frameRect ];

    return self;

}

// ---------------------------------

- (BOOL)acceptsFirstResponder

{

    return YES;

}

// ---------------------------------

- (BOOL)becomeFirstResponder

{

    return  YES;

}

// ---------------------------------

- (BOOL)resignFirstResponder

{

    return YES;

}

// ---------------------------------

- (void) awakeFromNib

{

	timer = [NSTimer timerWithTimeInterval:(1.0f/60.0f) target:self selector:@selector(animationTimer:) userInfo:nil repeats:YES];

	[[NSRunLoop currentRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];

	[[NSRunLoop currentRunLoop] addTimer:timer forMode:NSEventTrackingRunLoopMode]; // ensure timer fires during resize

    [[NSApplication sharedApplication] setDelegate: self];

    [self registerForDraggedTypes: [NSArray arrayWithObjects: (id) kUTTypeData,nil]];

}

-(IBAction)open_file_dialog:(id)sender

{

    NSOpenPanel* openDlg = [NSOpenPanel openPanel];

    [openDlg setCanChooseFiles:YES];

    [openDlg setCanChooseDirectories:NO];

    [openDlg setAllowsMultipleSelection:YES];

    if ( [openDlg runModal] == NSOKButton )

        for(NSURL *fileURL in [openDlg URLs]) {

            me.add_file([ [fileURL path] UTF8String]);

            [[NSDocumentController sharedDocumentController] noteNewRecentDocumentURL: fileURL];

        }

    [self setNeedsDisplay: YES];

}

- (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename

{

    if(me.add_file([ filename UTF8String])) {

        [[NSDocumentController sharedDocumentController] noteNewRecentDocumentURL:[NSURL fileURLWithPath:filename]];

        [self setNeedsDisplay: YES];

        return YES;

    }

    return NO;

}

- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender

{

    NSURL* fileURL = [NSURL URLFromPasteboard: [sender draggingPasteboard]];

    me.add_file([[fileURL path] UTF8String]);

    [[NSDocumentController sharedDocumentController] noteNewRecentDocumentURL: fileURL];

    [self setNeedsDisplay: YES];

    return YES;

}

- (BOOL)prepareForDragOperation:(id <NSDraggingInfo>)sender

{

    return YES;

}

- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender

{

    return NSDragOperationCopy;

}

@end