diff options
Diffstat (limited to 'tikzit-old/src/common/Transformer.m')
| -rw-r--r-- | tikzit-old/src/common/Transformer.m | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/tikzit-old/src/common/Transformer.m b/tikzit-old/src/common/Transformer.m deleted file mode 100644 index 2b56813..0000000 --- a/tikzit-old/src/common/Transformer.m +++ /dev/null @@ -1,231 +0,0 @@ -// -// Transformer.m -// TikZiT -// -// Copyright 2010 Aleks Kissinger. All rights reserved. -// -// -// This file is part of TikZiT. -// -// TikZiT is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// TikZiT is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with TikZiT. If not, see <http://www.gnu.org/licenses/>. -// - -#import "Transformer.h" - -float const PIXELS_PER_UNIT = 50; - -@implementation Transformer - -+ (Transformer*)transformer { -#if __has_feature(objc_arc) - return [[Transformer alloc] init]; -#else - return [[[Transformer alloc] init] autorelease]; -#endif -} - -+ (Transformer*)transformerWithTransformer:(Transformer*)t { -#if __has_feature(objc_arc) - return [t copy]; -#else - return [[t copy] autorelease]; -#endif -} - -+ (Transformer*)transformerWithOrigin:(NSPoint)o andScale:(float)scale { - Transformer *trans = [self transformer]; - [trans setOrigin:o]; - [trans setScale:scale]; - return trans; -} - -+ (Transformer*)transformerToFit:(NSRect)graphRect - intoScreenRect:(NSRect)screenRect { - return [self transformerToFit:graphRect - intoScreenRect:screenRect - flippedAboutXAxis:NO - flippedAboutYAxis:NO]; -} - -+ (Transformer*)transformerToFit:(NSRect)graphRect - intoScreenRect:(NSRect)screenRect - flippedAboutXAxis:(BOOL)flipX { - return [self transformerToFit:graphRect - intoScreenRect:screenRect - flippedAboutXAxis:flipX - flippedAboutYAxis:NO]; -} - -+ (Transformer*)transformerToFit:(NSRect)graphRect - intoScreenRect:(NSRect)screenRect - flippedAboutYAxis:(BOOL)flipY { - return [self transformerToFit:graphRect - intoScreenRect:screenRect - flippedAboutXAxis:NO - flippedAboutYAxis:flipY]; -} - -+ (Transformer*)transformerToFit:(NSRect)graphRect - intoScreenRect:(NSRect)screenRect - flippedAboutXAxis:(BOOL)flipAboutXAxis - flippedAboutYAxis:(BOOL)flipAboutYAxis { - - const float wscale = screenRect.size.width / graphRect.size.width; - const float hscale = screenRect.size.height / graphRect.size.height; - const float scale = (wscale < hscale) ? wscale : hscale; - const float xpad = (screenRect.size.width - (graphRect.size.width * scale)) / 2.0; - const float ypad = (screenRect.size.height - (graphRect.size.height * scale)) / 2.0; - - // if we are flipping, we need to calculate the origin from the opposite edge - const float gx = flipAboutYAxis ? -(graphRect.size.width + graphRect.origin.x) - : graphRect.origin.x; - const float gy = flipAboutXAxis ? -(graphRect.size.height + graphRect.origin.y) - : graphRect.origin.y; - const float origin_x = screenRect.origin.x - (gx * scale) + xpad; - const float origin_y = screenRect.origin.y - (gy * scale) + ypad; - - Transformer *trans = [self transformer]; - [trans setOrigin:NSMakePoint(origin_x, origin_y)]; - [trans setScale:scale]; - [trans setFlippedAboutXAxis:flipAboutXAxis]; - [trans setFlippedAboutYAxis:flipAboutYAxis]; - return trans; -} - -- (id) init { - self = [super init]; - - if (self) { - origin = NSZeroPoint; - x_scale = 1.0f; - y_scale = 1.0f; - } - - return self; -} - -- (id)copyWithZone:(NSZone *)zone { - Transformer *cp = [[[self class] allocWithZone:zone] init]; - if (cp) { - cp->origin = origin; - cp->x_scale = x_scale; - cp->y_scale = y_scale; - } - return cp; -} - -- (NSPoint)origin { return origin; } -- (void)setOrigin:(NSPoint)o { - origin = o; -} - -- (float)scale { return ABS(x_scale); } -- (void)setScale:(float)s { - x_scale = (x_scale < 0.0) ? -s : s; - y_scale = (y_scale < 0.0) ? -s : s; -} - -- (BOOL)isFlippedAboutXAxis { - return y_scale < 0.0; -} - -- (void)setFlippedAboutXAxis:(BOOL)flip { - if (flip != [self isFlippedAboutXAxis]) { - y_scale *= -1; - } -} - -- (BOOL)isFlippedAboutYAxis { - return x_scale < 0.0; -} - -- (void)setFlippedAboutYAxis:(BOOL)flip { - if (flip != [self isFlippedAboutYAxis]) { - x_scale *= -1; - } -} - -- (NSPoint)fromScreen:(NSPoint)p { - NSPoint trans; - trans.x = (p.x - origin.x) / x_scale; - trans.y = (p.y - origin.y) / y_scale; - return trans; -} - -- (NSPoint)toScreen:(NSPoint)p { - NSPoint trans; - trans.x = (p.x * x_scale) + origin.x; - trans.y = (p.y * y_scale) + origin.y; - return trans; -} - -- (float)scaleFromScreen:(float)dist { - return dist / ABS(x_scale); -} - -- (float)scaleToScreen:(float)dist { - return dist * ABS(x_scale); -} - -- (NSRect)rectFromScreen:(NSRect)r { - NSRect r1; - r1.origin = [self fromScreen:r.origin]; - r1.size.width = [self scaleFromScreen:r.size.width]; - r1.size.height = [self scaleFromScreen:r.size.height]; - // if we're flipped, the origin will be at a different corner - if ([self isFlippedAboutYAxis]) { - r1.origin.x -= r1.size.width; - } - if ([self isFlippedAboutXAxis]) { - r1.origin.y -= r1.size.height; - } - return r1; -} - -- (NSRect)rectToScreen:(NSRect)r { - NSPoint o = r.origin; - // if we're flipped, the origin will be at a different corner - if ([self isFlippedAboutYAxis]) { - o.x = NSMaxX(r); - } - if ([self isFlippedAboutXAxis]) { - o.y = NSMaxY(r); - } - NSRect r1; - r1.origin = [self toScreen:o]; - r1.size.width = [self scaleToScreen:r.size.width]; - r1.size.height = [self scaleToScreen:r.size.height]; - return r1; -} - -- (BOOL)isEqual:(id)object { - Transformer *t = (Transformer*)object; - return ([t origin].x == [self origin].x && - [t origin].y == [self origin].y && - [t scale] == [self scale]); -} - -Transformer *defaultTransformer = nil; - -+ (Transformer*)defaultTransformer { - if (defaultTransformer == nil) { - defaultTransformer = [[Transformer alloc] init]; - [defaultTransformer setScale:PIXELS_PER_UNIT]; - } - return defaultTransformer; -} - -@end - -// vi:ft=objc:ts=4:noet:sts=4:sw=4 |