2d drawing freeware

There are three main methods: Core animation, core graphic, and OpenGL ES. Ease of operation: Ca> CG> OpenGL Performance and functionality: OpenGL> CG> Ca 1. Core Animation Non-entertainment software uses animations, which is easy to operate. 2. Quartz 2D drawing Is a 2D drawing engine. (1) The

the graphics are redrawn each time the control is displayed. Obviously this performance is very bad, sometimes need to draw pictures in memory, so that can be exported to the phone local, can also be uploaded on the network. Unlike drawing directly on UIView, when drawing in memory, developers need to prepare their own drawing environment, and Quartz

);Cgcontextsetlinewidth (ctx,15);[[Uicolor Blackcolor] set];Draw linesCgontextstrokepath (CTX);2. Draw the most bezel frame[Mjcolor (61,62,66) set];CGFloat Frameradius = Mjradius * 0.4;CGFloat Framey = starty;CGFloat FrameX = rect.size.width * 0.5-mjradius;Cgcontextaddarc (CTX,FRAMEX,FRAMEY,FRAMERADIUS,0,M_PI * 2,0);Cgcontextfillpath (CTX);3. The white box inside the picture[[Uicolor Whitecolor] set];CGFloat Whiteradius = Frameradius * 0.7;CGFloat whitey = Framey;CGFloat Whitex =framex;Cgcontext

Simple 2D drawing box

Custom view is written in the. m file#import "KKView.h"@interfaceKkview ()/** The Y value of the picture*/@property (nonatomic, assign) cgfloat imgy;@end@implementationKkview- (void) awakefromnib{ //Create Cadisplaylink, default 60 times per secondCadisplaylink *display = [Cadisplaylink displaylinkwithtarget:self selector: @selector (updataimage)]; //adding Cadisplaylink to the message loop[Display Addtorunloop:[nsrunloop mainrunloop] formode:nsdefaultrunloopmode]; }- (void) updataimage{/

For example, to draw a rect, the general method is Vertexbuffer-> lock (); Fillrectvertex (); Vertexbuffer-> unlock (); Settexture (); Drawprimitive (); The validity rate of drawing multiple 2D elements is very low. The reason is that lock/unlock is called multiple times. Improvement Method: 2d element Rendering Use a unified memory buffer and Command record.

following code allows the viewport and window to maintain the same aspect ratio to prevent distortion 2 int side = qmin (width (), height ()); 3 int x = (width ()-side/2); 4 int y = (height ()-side/2); 5 Painter.setviewport (x,y,side,side);Transformations of four common coordinate systems: Pan Qtransform Translate (qreal dx, qreal dy) Rotary Qtransform Rotate (qreal angle, qt::axis Axis = Qt::zaxis) Scaling Qtransform scale (qreal SX, Qreal Sy) Twisted Qtransform Shear

Standard Model embryo 2D drawing software this program is used in graphic Mingli standardsThe model embryo is 2D, and the operation environment is AutoCAD2000 ~ In version 2007, the command name should be mlts. This program depends on Mingli Model Accuracy: QB/ml010 2006/11. Tool usage instructions 1. Open AutoCAD and run the mlts command to display the followi

WPF learning 05: 2D drawing controls Deformation Using Transform, wpftransform In WPF learning 04: 2D drawing using Shape to draw basic graphics, we learned how to draw basic graphics. This time, we further study how to deform the image.Example A triangle formed by Transform: C # code: for (int i = 0; i Shape Introd

WPF learning 05: 2D drawing Transform, wpf052dtransform In the previous article about WPF learning 04: Drawing 2D shapes, we can draw basic images. When it comes to graphic application programming, it is not enough to draw only basic graphics. We can use the Transform class provided by WPF to perform deformation operat

g) {graphics2d g2= (graphics2d) g;double leftx=100;double topy=100;double width =200;double height=150; Rectangle2D rect=new rectangle2d.double (leftx,topy,width,height); G2.draw (rect); Ellipse2d ellipse=new ellipse2d.double (); Ellipse.setframe (rect); G2.draw (ellipse); G2.draw (New Line2d.double (LeftX, topy,width,height));d ouble Centerx=rect.getcenterx ();d ouble centery=rect.getcentery ();d ouble radius=150; Ellipse2d circle=new Ellipse2d.dOuble (Centerx,centery,centerx+radius,centery+ra

C#WPF How do I draw geometry? How to draw a coordinate system?This is inseparable from the path (System.Windows.Shapes) and StreamGeometry (System.Windows.Media) classes.I. Building a WPF ProjectSecond, add codeCode in MainWindow.xamlCode in MainWindow.xaml.csUsing system;using system.collections.generic;using system.linq;using system.text;using System.Threading.Tasks; Using system.windows;using system.windows.controls;using system.windows.data;using system.windows.documents;using System.windows