IOS development and ios development tutorial

IOS development and ios development tutorial
Quartz2D

-(Void) drawRect :( CGRect) rect {// 1. context CGContextRef ctx = UIGraphicsGetCurrentContext (); // 2. body drawBody (ctx, rect); // 3. mouth (SMILE) drawMouth (ctx, rect); // 4. draw eye drawEyes (ctx, rect);}/*** eye */void drawEyes (CGContextRef ctx, CGRect rect) {// 1. black Strap CGFloat startX = rect. size. width * 0.5-Radius; CGFloat startY = TopY; CGContextMoveToPoint (ctx, startX, startY); CGFloat endX = startX + 2 * Radius; CGFloat endY = startY; CGContextAddLineToPoint (ctx, endX, endY); CGContextSetLineWidth (ctx, 15); [[UIColor blackColor] set]; // draw the CGContextStrokePath (ctx) line; // 2. outermost frame [ZLColor (61, 62, 66) set]; CGFloat kuangRadius = Radius * 0.4; CGFloat kuangY = startY; CGFloat kuangX = rect. size. width * 0.5-kuangRadius; CGContextAddArc (ctx, kuangX, kuangY, kuangRadius, 0, M_PI * 2, 0); CGContextFillPath (ctx); [ZLColor (61, 62, 66) set]; CGFloat kuangRadius1 = Radius * 0.4; CGFloat kuangY1 = startY; CGFloat kuangX1 = rect. size. width * 0.5 + kuangRadius; CGContextAddArc (ctx, kuangX1, kuangY1, kuangRadius1, 0, M_PI * 2, 0); CGContextFillPath (ctx); // 3. white Box [[UIColor whiteColor] set]; CGFloat whiteRadius = kuangRadius * 0.7; CGFloat whiteX = kuangX; CGFloat whiteY = kuangY; ctx, whiteX, whiteY, whiteRadius, 0, m_PI * 2, 0); CGContextFillPath (ctx); [[UIColor whiteColor] set]; CGFloat whiteRadius1 = kuangRadius * 0.7; CGFloat whiteX1 = kuangX + 2 * kuangRadius; CGFloat whiteY1 = kuangY; CGContextAddArc (ctx, whiteX1, whiteY1, whiteRadius1, 0, M_PI * 2, 0); CGContextFillPath (ctx); // 4. brown eyeball [ZLColor (76, 23, 13) set]; CGFloat brownRadius = kuangRadius * 0.4; CGFloat brownX = kuangX + 2 * kuangRadius-6; CGFloat brownY = kuangY; CGContextAddArc (ctx, brownX, brownY, brownRadius, 0, M_PI * 2, 0); CGContextFillPath (ctx); [ZLColor (76, 23, 13) set]; CGFloat brownRadius1 = kuangRadius * 0.4; CGFloat brownX1 = kuangX + 6; CGFloat brownY1 = kuangY; CGContextAddArc (ctx, brownX1, brownY1, struct, 0, M_PI * 2, 0); CGContextFillPath (ctx); // 5. black pupil [[UIColor blackColor] set]; CGFloat blackRadius = kuangRadius * 0.2; CGFloat blackX = kuangX + 2 * kuangRadius-6; CGFloat blackY = kuangY; CGContextAddArc (ctx, blackX, blackY, blackRadius, 0, M_PI * 2, 0); CGContextFillPath (ctx); [UIColor blackColor] set]; CGFloat blackRadius1 = kuangRadius * 0.2; CGFloat blackX1 = kuangX + 6; CGFloat blackY1 = kuangY; CGContextAddArc (ctx, blackX1, blackY1, blackRadius1, 0, M_PI * 2, 0); CGContextFillPath (ctx); // 6. white reflection [[UIColor whiteColor] set]; CGFloat lightRadius = kuangRadius * 0.1; CGFloat lightX = kuangX + 2 * kuangRadius; CGFloat lightY = kuangY; CGContextAddArc (ctx, lightX, lightY, lightRadius, 0, M_PI * 2, 0); CGContextFillPath (ctx); [[UIColor whiteColor] set]; CGFloat lightRadius1 = kuangRadius * 0.1; CGFloat lightX1 = kuangX + 2 * kuangRadius-45; CGFloat lightY1 = kuangY; CGContextAddArc (ctx, lightX1, lightY1, lightRadius1, 0, M_PI * 2, 0); CGContextFillPath (ctx );} /*** nozzle */void drawMouth (CGContextRef ctx, CGRect rect) {// Control Point CGFloat controlX = rect. size. width * 0.5; CGFloat controlY = rect. size. height * 0.4; // current vertex CGFloat Margat = 20; CGFloat marginY = 10; CGFloat currentX = controlX-marginX; CGFloat currentY = controlY-marginY; CGContextMoveToPoint (ctx, currentX, currentY); // end point CGFloat endX = controlX + margdy; CGFloat endY = currentY; // CGContextAddQuadCurveToPoint (ctx, controlX, controlY, endX, endY ); // set the color [[UIColor blackColor] set]; // render CGContextStrokePath (ctx);}/*** draw the body */void drawBody (CGContextRef ctx, CGRect rect) {// CGFloat topX = rect. size. width * 0.5; CGFloat topY = TopY; CGFloat topRadius = Radius; CGContextAddArc (ctx, topX, topY, topRadius, 0, M_PI, 1 ); // extend CGFloat middleX = topX-topRadius; CGFloat middleH = 100; // The height of the intermediate body CGFloat middleY = topY + middleH; CGContextAddLineToPoint (ctx, middleX, middleY ); // CGFloat bottomX = topX; CGFloat bottomY = middleY; CGFloat bottomRadius = topRadius; substring (ctx, bottomX, bottomY, bottomRadius, M_PI, 0, 1 ); // merge path CGContextClosePath (ctx); // set the color [ZLColor (252,218, 0) set]; // use the fill method to draw the previous path CGContextFillPath (ctx );}

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