3D Rendering/Drafting services

• Gorgeous 3D rendering that powers your marketing & sales

  The term “3D rendering” refers to the process of taking a digital 3D model of an object and producing a photorealistic 2D representation that can be viewed on a screen. Rendering is the last step before an image or animation is shown to an audience. Different CAD programs and dedicated 3D rendering programs automate the rendering process in different ways, but it still takes the work of a skilled CAD designer to produce high-quality renderings that fool the eye into thinking they are looking at real objects.

  Many of the finely nuanced texturing and lighting effects that give a great image the impression of depth and three-dimensionality are applied during the rendering stage. Rendering is analogous to photographing a 3D model in some respects. Unlike a photograph of the real thing, a rendering of a 3D model often looks more lifelike than the real thing itself.
  Depending on the size, complexity, and resolution of the image, the rendering process can take several hours or even days to finish. In terms of 3D rendering, our seasoned artists are well-versed in many different approaches, such as:

  ✓ Z-buffer triangle rasterization	✓ HDR rendering	✓ Scanline rendering	✓ Wireframe rendering
  ✓ Ray-tracing	✓ Path-tracing	✓ Radiosity	✓ And more!

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  Whether you’re looking for impressive concept models, marketing materials, or video game and animation content, the expert 3D designers on HandToCAD’s roster are to work with you. 

  Top-quality 3D rendering and CAD modeling solutions

• HandToCAD stands apart from conventional design firms and outsourcing companies. Rather than merely providing a platform for clients to hire freelancers, we go a step further and connect clients directly with talented freelance designers who have been vetted and pre-qualified.

• We select designers for our clients based on the specific needs of their projects and our past working relationships with top-ranking 3D artists. Put your time toward working on your project or managing your business and let us worry about finding the perfect 3D modeler for you.

• HandToCAD is able to connect you with a high-quality 3D rendering services company at a fraction of the cost of traditional design firms by leveraging digital technologies and efficient business methods. Unlike a physical store, we don’t have to spend as much on things like heating and cooling, so more of your money can go toward paying for professional designers.

• Another way in which we stand out is by providing services that are entirely tailored to the particulars of each client’s project. HandToCAD is here to connect you with the services you need within a framework that fits your budget, whether you’re a solopreneur seeking assistance in bringing your product to market or a design studio outsourcing some 3D rendering work to meet an impending deadline.

• Give us the details of your endeavor. If you send us your project, we’ll review it, give you a no-obligation quote for the price of the services you require, and put you in touch with one of our top freelance CAD designers. We have both permanent and contract design staff available. Get a free estimate for your project now!

  Find expert 3D rendering freelancers for your CAD project

• When you hire through HandToCAD, you’ll have access to the world’s top independent CAD designers and 3D artists. The global team of 3D artists and engineers we employ has deep expertise across multiple fields and platforms. Beyond just CAD rendering, we provide a wide range of other design services. Regardless of how complex or simple your project is, we have the answers you’re looking for.

• We’re flexible in terms of the CAD programs we can use to collaborate with you. All of our designers are well-versed in and proficient with the following cutting-edge design programs:

  ✓ SolidWorks	✓ KeyShot	✓ AutoCAD
  ✓ 3ds Max (3D Studio Max)	✓ PTC Creo	✓ Flash 8
  ✓ Rhinoceros (Rhino 3D)	✓ Autodesk Maya	✓ Adobe Premiere Pro
  ✓ CATIA by Dassault	✓ Photoshop Creative Suite	✓ Unity 3D
  ✓ Trimble SketchUp (Google)	✓ V-Ray by Chaos Group	✓ And more!

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• Simply specify the design software you need, and HandToCAD will find a designer who is proficient in it.
  Customers who have already constructed their 3D models and are in need of a 3D designer can take advantage of our CAD rendering services. If you need a high-quality model developed before we can move on to the rendering stage, check out our extensive 3D modeling services.

• All of your 3D modeling, 3D CAD design, and CAD drafting requirements can be met by HandToCAD. Inventors, business owners, architects, and engineers are among our most loyal customers.

  

  Rendering methods for your project

  Do you know which 3D rendering technique would be ideal for your work? Weigh your priorities for speed and photorealism. Some rendering techniques are less demanding on the GPU but produce less lifelike results, and vice versa.
  When working with HandToCAD, you can select 3D rendering methods that are optimized for your specific requirements. Our CAD artists are experts at both real-time and conventional rendering techniques.
  Professional, In-Situ Rendering

• The graphics processing unit (GPU) of the computer displays each frame instantly in real-time rendering. A video game that displays a 3D world that the player can interact with is one such example. The human visual system requires at least 24 frames per second in order to give the impression of motion. The goal of real-time rendering is photorealism at a frame rate of 30 frames per second.
  However, this does not mean that quality must be compromised. Currently available processors are among the most powerful ever made.

• Professional CAD designers at HandToCAD are well-versed in 3D rendering techniques like Z-buffer triangle rasterization, high dynamic range rendering, and real-time ray tracing, and can use these tools to create stunning visuals for your real-time software.

  Z-Buffer triangle rasterization

• The results of using a z-buffer for rasterizing triangles are top-notch, and the technique also has one major benefit: it’s quick. So, it’s perfect for rendering in real time. In fact, Z-buffer triangle rasterization is widely used in real-time rendering to bring 3D content to a flat display.

• As the name suggests, Z-buffer triangle rasterization uses triangle meshes to represent objects. In the world of computer graphics, triangles are the most basic “primitive” shape. They are always convex and have only three vertices or edges. Graphics processing units (GPUs) can handle millions of triangles per frame. Triangles are a versatile building block that can be used to create almost anything.

• Our CAD specialists then use a process called “triangle rasterization” to transform the triangles into pixels. Finally, Z-buffering controls how far into the scene each triangle appears. You can find some form of z-buffering, either hardware or software, in virtually any modern computer or mobile device. To ensure the correct surfaces are displayed when objects overlap, the depth (Z-value) of each pixel in the image is saved in a buffer.

• To this day, z-buffer triangle rasterization remains one of the most refined and widely used rendering methods available. Modern, graphically intensive games have millions of triangles packed into their objects and environments. The need for ever-faster processors is understandable given that a 4K display contains more than eight million pixels.
  The CAD experts at HandToCAD use cutting-edge 3D rendering techniques to produce eye-popping real-time renderings.

  HDR rendering

  Our eyes are incredible organs. In conjunction with the brain, it enhances our ability to detect subtle differences in illumination and make out fine details. Since computer and television screens aren’t as good as the human eye, high dynamic range (HDR) rendering attempts to create the most realistic image possible. With HDR, “bright things can be bright, dark things can be really dark, and details can be seen in both,” as stated by NVIDIA, a company specializing in GPU technology.

• If high dynamic range (HDR) rendering isn’t used, the contrast ratio of a regular screen will automatically clip black and white areas. High Dynamic Range (HDR) displays a wider range of brightness levels using tone mapping and other methods. The result is a maintenance of fine detail even in the whitest of whites and the blackest of blacks. Increased surface luminosity is another technique HDR employs to make an object or scene seem brighter.

• Using HDR is a common practice in the gaming industry.
  One of the first real-time applications to use a shader similar to high dynamic range was Riven: The Sequel to Myst. The technology was further developed by Epic Games’ Unreal Engine 3 and Valve Software’s Source Engine. HDR gaming is currently supported by PC, PS4 Slim and Pro, Xbox One S, and Xbox One X.

• HDR content can only be viewed on HDR-capable displays, such as the iPhone X or an HDR-ready television or computer monitor. In comparison to the standard 100 nits for a typical TV, HDR displays can achieve 1,000 nits or more at peak brightness.

  HandToCAD’s real-time 3D rendering pros can work with you on your HDR 3D rendering project.

• Real-time ray tracing

• Since ray tracing is so time-consuming, it has typically been reserved for post-processing or other forms of non-real-time rendering. It’s used to make stunning photorealistic imagery for things like movies and commercials. In ray tracing, light rays are followed as they travel from a camera or eye and reflect off of various surfaces. Stunning subtleties like reflections, sub-surface scattering, and translucence are rendered after thousands of calculations.

• Although ray tracing has traditionally been too time-consuming for use in real-time rendering, this is beginning to change. The 2018 NVIDIA Turing graphics card lineup includes real-time ray tracing support (RTX). Ray tracing runs more quickly when executed on a graphics processing unit (GPU). The shaders for every object in the scene must be stored in the GPU, which is why RTX requires the latest, most powerful graphics cards.

• Modern graphics cards have the ability to increase the frame rate of real-time ray tracing through a technique called enhanced denoising. The number of rays needed to render a scene is cut down by denoising. The Tensor Cores in Turing GPUs are responsible for this. Faster calculations are possible thanks to the Turing cards’ RT Cores.
  Due to RTX’s recent release, real-time ray tracing capabilities are currently constrained. Even on a high-performance, multi-GPU computer, the best ray-tracing results can take up to 10 hours per frame.

• The state of the art in interactive rendering is real-time ray tracing. Incorporating this cutting-edge technology into your work is something

• HandToCAD can help you with.
  Scanline rendering
  Scanline rendering is an advanced rendering technique that renders surfaces on a row-by-row basis rather than with polygons or pixels. Scanline rendering works by first sorting shapes by their highest y coordinate, and then computing each row of the image by intersecting a scanline with the shapes.

• A ray is cast through each individual pixel in scanline rendering. If the ray crosses a surface, the color of the pixel is calculated. The pixel is considered background if the ray does not hit any surfaces.

• Because only the edges that intersect the current scan line are kept in active memory, scanline rendering speeds up processing. Scanline rendering can also integrate with Z-buffering to rasterize one scanline at a time. This allows for continuous use of polygon boundaries across successive scanlines. The original Quake engine used scanline rendering for in-engine rendering of environments (moving objects were Z-buffered over the top). Also using this technique is the Nintendo DS, which displays 3D environments.
  Our CAD designers can integrate scanline rendering with other graphics techniques like the Phone reflection model (see Shading Methods) or Z-buffering.

  Wireframe rendering 

• The most elementary approach to 3D rendering is called wireframe rendering. It predated computer graphics by centuries and was the first method for making 3D pictures. Each edge of an object is indicated by a line in a wireframe, and these lines may connect the object’s vertices or simply indicate where two smooth surfaces meet. Wireframes are efficient in terms of computational load because of their inherent simplicity. Because of this, C.A.M. systems typically take wireframes as input from designers (CAM).

• Even though it’s the least photorealistic and most abstract 3D rendering technique, wireframes are helpful for visualizing an object’s structure, as they can be easily rotated and displayed in any orientation. Surfaces and solids can be built and manipulated quickly with 3D wireframe rendering. Wireframe rendering is vital for revealing your models’ topography to the viewer. Examples of portfolio work, pre-design walkthroughs, and website and product design are just some of the many possible uses.

  Discover the best CAD designer for your wireframe rendering project with the assistance of HandToCAD.

• Stunning visual effects using non-real-time rendering

  Movie visual effects, for example, are rendered digitally and then transferred to film or an optical disk one at a time because they are not interactive. This allows for much slower processing times, anywhere from a few seconds to several days.

• Our CAD artists can employ ray tracing, path tracing, or radiosity to achieve the desired level of photorealism. Three popular light-based rendering methods—ray tracing, path tracing, and radiosity—are grounded in the physics of how light behaves in different situations. Visual effects artists can create the illusion of rain, smoke, fire, fog, dust, and many other phenomena. Subsurface scattering, which gives surfaces like human skin a brilliant sheen, and light-refracting, like when light ripples across the bottom of a swimming pool, are two of the most breathtaking effects our top designers can achieve.

• For their non-real-time rendering, studios that create CGI animations rely on hundreds of CAD artists. Our CAD artists at HandToCAD are capable of producing photorealistic stills and animations for your non-real-time productions.

  Ray tracing and rendering

• At the expense of significant computational effort, ray tracing can create stunningly realistic visuals. The best use cases for ray tracing are those where the image can be rendered slowly in advance, such as still images or film and TV visual effects. However, with ever-increasing processing speeds, ray tracing is becoming increasingly applicable to real-time applications like games.

• Using an imaginary camera, eye, or light source, ray tracing creates random light rays and follows them as they bounce off of objects in the scene. Each reflected ray adds its own characteristics to those of the material and the incident angle of light. Different characteristics, such as hue and texture, are picked up by individual rays, which are then followed as they travel out of view.
  Because the rays are generated at random and can bounce around the scene for extended periods of time, ray tracing is extremely time-consuming.

• Light rays are tracked by the program until they strike an object, at which point the software performs a calculation before sending the light rays onward. The intersections of those rays are then calculated, and so on and so forth, until each ray has arbitrarily disappeared from view. In comparison to other rendering methods, ray tracing’s superior simulation of reflections and shadows makes it time well spent.

• The CAD professionals at HandToCAD can offer guidance on how to optimize the ray tracing aspect of your 3D rendering project.

  Path tracing and rendering

• Even though they sound similar, ray tracing and path tracing are actually quite different techniques. The optical effects created by ray tracing can be stunning, but it may not be the most photorealistic rendering option. More subtle and obvious lighting effects can be rendered with greater precision using methods that trace rays and also employ techniques like path tracing.

• Soft shadows, depth of field, motion blur, caustics, ambient occlusion, indirect lighting, and light scattering are just some of the effects that can be generated with path tracing, an improved ray-tracing process. This technique is a way to render images with more lifelike illumination. Path tracing, when used in conjunction with photorealistic models, can create images that fool the eye.

• Since path tracing only takes into account the light paths that reach the camera, it uses less processing power. It handles indirect illumination and light that reflects multiple times without wasting processing time on rays that won’t affect the final scene (multi-bounce light). Because of this, effects like refraction and glossy surfaces work wonderfully when rendered using path tracing. Hyperion, Walt Disney Animation Studios’ proprietary path tracing renderer, is used for path tracing.

• The CAD experts at HandToCAD can produce film-quality renderings for your project using ray tracing and path tracing.

  Radiosity rendering

• Rendering with radiosity is effective for diffusely reflective surfaces. As a result of radiosity, a surface receives illumination not only from direct illumination but also from illumination reflected from other surfaces. While the number of calculations increases with radiosity, unlike ray tracing or path tracing, the results are applicable from any perspective. Natural lighting, gentle shadows, and nuanced color effects are just some of the ways in which radiosity can enhance realism.

• Radiosity focuses exclusively on worldwide brightness. The radiosity representation is limited to light paths that originate from a source and are diffusely reflected multiple times before they reach the camera or the eye, whereas the path tracing method handles all possible light paths. The radiosity approach evolved from the study of thermal radiation in engineering.

• It basically calculates how much energy is lost or gained as light travels between different surfaces. Radiosity, like path tracing, includes efficiencies. The calculations in radiosity rendering are simplified by assuming perfect diffuse scattering.
  In the early 1980s, radiosity was created for use in computer graphics. Enlighten by Geomerics, 3ds Max, form•Z, LightWave 3D, and the Electric Image Animation System are all popular commercial radiosity engines. Because of its superior ability to capture the subtleties of multiple interior light sources, radiosity is ideally suited for rendering architectural interiors. Because of this, architects and builders can benefit from it.