ray wenderlich

The ball is one of the most commonly used elements in ray tracing, and is also used in bounding box algorithms due to the easiest calculation intersection. therefore, an in-depth study of this section of the problem solution. first, a simple algebraic solution is derived. then the special condition of the problem is investigated, and a more effective geometrical solution is proposed. The comparison of the analysis results shows the basic equivalence o

Note: When viewing HDR video from only HDR-enabled video services, such as Amazon Video, the Blu-ray filter will not be applied. 1. Under the Standby page, click "Settings". 2. Click "Show". 3. Click on "Blu-ray filter". 4. Click on the right "slider" switch, show "open" Representative has been opened. 5. Drag the "dot" icon under opacity to adjust the transparency of

Welcome to join the Cocos2d-x Exchange Group: 193411763When reproduced, please indicate the original source: http://blog.csdn.net/u012945598/article/details/39927911--------------------------------------------------------------------------------------------------------------- --------------------------------------------1. Three-dimensional pickup technologyIn 3D games usually have such a demand, the user can choose some objects in the 3D world, such as drag-and-drop operations, then need to prog

Ray: A ray is a zero-end line emitted by a point in the 3D world in One direction, which stops firing when colliding with other objects in the launch trajectory.Ray Rays and Raycasthit are two of the most common tools used in the shooting.Uses: Ray is used for collision detection (such as whether to hit the target in the shooting game), the role movement, to dete

?? Recently, when solving three-dimensional problems, it is necessary to judge whether the segment crosses the cube, and the question can be extended as follows: whether the ray passes through the cube aabb.?? The commonly used algorithm for collision detection in 3D game development is the axis-aligned rectangular bounding box (axially Aligned bounding box, AABB) box method, the basic idea is to use a cube or a sphere to completely wrap the 3D object

　　　　this August, a large number of game developers walked into Unite 2014 and gathered at the Seattle Center to attend the Unite eighth annual meeting. In a series of exciting meetings and keynote speeches, Jens Fursund, from our PowerVR Ray tracing team, introduced the upcoming Unity 5 Light mapping editor, which uses ray-tracing technology to quickly and accurately simulate light. We are very pleased to w

Physics.raycast: Ray projectionParameters:Origin: Ray start pointdirection: Ray DirectionDistance: Ray lengthLayermask: only The collider within the Layermask layer is selected, and the other in-layer collider is ignored. ReturnsBool-true when the ray intersects any collide

Cocos2d-x tutorial (35)-3D pickup Ray-AABB Collision Detection Algorithm Certificate ----------------------------------------------------------------------------------------------------------------------------------------------------------- 1. 3D pickup Technology In 3D games, users can select certain objects in the 3D world for operations such as drag and drop, in this case, the program needs to convert the point coordinate on the two-dimensional sc

From: http://blog.csdn.net/liu_lin_xm/article/details/4850609Excerpt from "GPU programming and Cg language primer 1rd edition" Chinese name "GPU programming and Cg language principle of ray casting Algorithm The ray projection method is a direct rendering algorithm based on the image sequence. Transmits a ray in a fixed direction (usually in the line of sight) fr

Method One: Physics.raycast ray projection 1.static function Raycast (Origin:vector3, Direction:vector3, distance:float = mathf.infinity, Layermask:int = kDe Faultraycastlayers): BOOL A static beam-emitting method that casts a light on a scene that can collide with all collider. Parameter explanation: Origin: Ray starting point Direction: Ray Direction Dist

The difference between Blu-ray DVD and Hddvd The current popular DVD technology uses a wavelength of 650nm red laser and digital aperture of 0.6 focus lens, the disc thickness of 0.6mm. Blu-ray DVD technology uses a wavelength of 450nm blue-violet laser, through the wide-angle lens on the ratio of 0.85 of the digital aperture, the focus of the light point of the size of the success of the small degree of r

FeedRecently a series of physics related, first of all to summarize some of the things written last year, and then see if you can masturbate a physics engine out.Ray detection in the previous write Ray tracking when there are some written, but at that time is relatively simple to write, just recently work on the use of these, so good to write.Write Ray Sphere's collision detection today.Environment:Unity5.2

Comparison of Dr dual-energy subtraction and DR chest X-ray and CT absorption dose in the chest; Research Institute of medical imaging, Nanjing General Hospital of Nanjing Military Region (210002) Wang Jun digital X-ray photography (DR) chest double-energy subtraction plays a role in the diagnosis of pneumothorax, pulmonary nodules and calcification in nodules, rib fracture, coronary artery calcification, e

Problem Most collision detection methods only detect two objects in the event of physical collisions. However, if one small object quickly passes through another object, YourProgramThe update speed may not be able to keep up with and the collision cannot be detected. For example, a bullet in a bottle. A bullet shoots at a speed of 5000 km/h to a bottle, and the width of the bottle is only 15 cm. The xNa program updates 60 times per second, so each update of the bullet will move forward to a d