fisheye projection

Http://www.jb51.net/article/44271.htmVerticalPointFromCircletoLine.cpp:Defines the entry point for the console application.//#include "stdafx.h"#include typedef struct{float X;float Y;}point;void Getprojectivepoint (Point A, Double K, point R, point* ptarget){if (k = = 0)//vertical slope not present{Ptarget->x = r.x;Ptarget->y = A.Y;}Else{Ptarget->x = (float) ((k * a.x + r.x/k + r.y-a.y)/(1/k + k));Ptarget->y = (float) ( -1/k * (ptarget->x-r.x) + r.y);}}int _tmain (int argc, _tchar* argv[]){Doub

DescriptionIn the default 2D rendering, the range of the X, y axes of the rendering is from [-1, 1], the center point of the screen (0,0), so the coordinates of the mouse click must be converted to the world geographic coordinate system, in 2D environment, the default Z coordinate is 0.0Assuming a screen width of 800, 4800 higherScreen coordinates geographic coordinatesUpper left corner 0,0-1,1Lower left corner 0,480-1,-1upper right corner 800,0Lower right corner 800,480 1,-1Now, with the gluo

CSS3 transform to achieve picture projection effect

three digits after the decimal point, and the absolute values are no larger than 10000.0. Output each lines have two real number, rounded to three digits after the decimal point, representing the position of the Reflection Point. Sample input10.000 0.0004.000 0.0001.000 1.0003.000 1.000 Sample output2.0000.000 Source2009 multi-university training contest 5-host by nudt Give a mirror (always-wire) to the point where the incident light passes and the point where the reflected light passes. Idea:

I have been busy with projects for a long time and have not updated my blog. Just write what you learned on projection. Original Image: [[Self view] layer] setbackgroundcolor: [[uicolor blackcolor] cgcolor]; uiimage * balloon = [uiimage imagenamed: @ "mj_207.jpg"]; calayer * reflectionlayer = [[calayer alloc] init]; [reflectionlayer setbounds: cgrectmake (0.0f, 0.0f, 320.0, 480.0)]; [reflectionlayer setposition: cgpointmake (callback, 220.0f)]; [refl

D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(d3dpp, sizeof(d3dpp));if(fullscreen) { d3dpp.Windowed = FALSE; d3dpp.BackBufferWidth = WINDOW_WIDTH; d3dpp.BackBufferHeight = WINDOW_HEIGHT; }else d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = displayMode.Format;// Create the D3DDevice if(FAILED(g_D3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUR

·Projection Screen Parameter comparison tableShutter Screen(4: 3) Diagonal (INCHES) Size (m) 100" About 2.0*1.5 120" About 2.4*1.8 150" About 3.0*2.4 180" About 3.6*2.6 200" About 4.2*3.2 Shutter screen (16: 9) Diagonal (INCHES) Size

Settings of light, shadow, and camera in ogre1. To enable shadow, first call scenemanager: setshadowtechnique () and then call entity: setcastshadows () for the entity to be enabled ().2. The lights and cameras must be created by scenemanager, which are scenemanager: createlight () and scenemanager: createcamera ().3. you can create multiple cameras to manage ogre: viewport * Vp = mwindow-> addviewport (mcamera) with the view, and set the background color of the view using setbackgroundcolour ()

CSS3 transform implements image projection,

(NO.00003) iOS games simple robot projection game forming notes (11) The robot has already fired bullets. Let's see how to set obstacles for players. We can see from the figure above that there are several obstacles in the machine and basket. Let's first look at how to implement them. Open SpriteBuilder and create SmallBrick. ccb in the Sprites folder. The type is Node. Drag a CCNodeColor node from the control library, called the child node of its

(NO.00003) iOS games simple robot projection game forming notes (2) Open Ai and draw the robot body, arm, and basket as needed: Because it is an experimental game, there is no need to spend too much effort on it to draw out the meaning. although it is a 2D game, it can show a pseudo 3D graphic effect in the actual game. Although this cat's game element is full of 2D effects ;) SpriteBuilder creates a project named ShootBall.Drag the previously d

(No. 00003) simple robot projection for iOS games (V) In the previous article, we created a physical robot object. Next we will look at the corresponding logic code. Go to Xcode and create a new Robot and Arm class, which inherit from CCNode and CCSprite classes respectively. Leave all the code blank and implement it later. Let's take a look at how the robot interacts with players. when the player touches and moves the robot arm, the arm is rotated in

directories. Urn An updated form of Urn:url, the Uniform Resource name (urn,uniform Resource name). Uniquely identifies an identifier for an entity, but cannot give the location of the entity. Identify persistent Internet resources. Urns can provide a mechanism for locating and retrieving schema files that define a particular namespace. Although normal URLs can provide similar functionality, in this regard, urns are more powerful and easier to manage because urns can reference mul

A friend posted a post asking me how the projections in the package were made? It's actually very simple! Let me talk about it here! This is the projection. N Draw a diamond in black Make a feather selection, and cover the diamond half of the position! Then remove the color points from the selection! Draw a round selection with the right vertex as the center, and the selection will cover the entire diamond! Then the

Here is a brief introduction to the projection, filter, and sort clauses of LINQ. Select Select to project a set sequence by a given condition, select to return the combined filter results, return the anonymous type, manipulate the returned results, return the combined subquery results, and so on. The Select method defines the prototype as: public static IEnumerable The extension method is defined in the enumerable type. Properties of the type o

This article by the Chinese tutorial Net Buxiaoxin original, reprint must keep this information hey, everyone can also practice, do comparison, two points, camera matching and no light projection material application I am not very good at doing tutorials, the first time, if there is no place, everyone forgive me, I will take this tutorial here. Open 3DMAX, press shortcut key 8 to pull up Environment parameter window, set environment map backgrou

Shortly after Windows Phone 8.1 Preview for Developers was released, Microsoft today unveiled the project my screen projection application, which can deliver display signals on the phone to PC monitors and projectors, This is especially useful when doing presentations and playing media content, interestingly, the app also supports the interaction between the PC and the phone, which Microsoft has put in the Download Center and can now get it, just inst

() + "" +userinfo.getpassword ());} Commit Transaction Tx.commit ();} catch (Exception ex) {if (tx! = null) {try {//ROLLBACK transaction tx.rollback ();} catch (Exception e) {e.printstacktrace ()}}} finally {/ /close Sessionsession.close ();}} 3.MySQL database ,UserInfo class, mapping file UserInfo.hbm.xml and hibernate.cfg.xml configuration file See: 19th Day lazy projection on the use of warm Yang-hibernate on jdbc (i)4. You also need to add a Sl

The asterisk is added in this section. If you do not understand the content of this section, you can skip it for the moment. If you do not understand it, you can check it again later"Next, we will use the graphic method to explain this

In ArcGIS Java SDK, there are many examples. For a map, the coordinate system (spatial reference) is very important. It directly determines the coordinate value of a point! Therefore, this example is very basic! Paste This example shows that