Category Archives: Design

How to create a volume light effect

To generate volume light, you must use a direct light source. 3ds Max standard directional lights work well – but you can also use V-Ray plane lights by increasing the directional parameter.

Start by adding a target directional light into your scene and position the light source and the target so that the light passes through the opening or window. The target must go beyond the floor or wall so that the volume light continues throughout. Avoid angling the direct light towards the camera otherwise you may end up with a washed out render due to the volume light covering the camera.

The volume light will be contained within the direct light’s hotspot beam and falloff field. If you set the falloff field to be much greater than the hotspot beam, the volume light will start to lose density quite rapidly and fade out the further it travels from the centre of the light. If you want an even distribution of light, it is best to keep the falloff field value close to the hotspot beam value.

Start by adding a target directional light into your scene

By default, 3ds Max standard lights do not have any attenuation applied, so the light has continuous luminosity. This is incorrect. Light should start to lose luminosity by dispersing the further it travels away from the source. Within the decay parameters, set the type to Inverse Square. If the light decays too fast, you can tweak this by adjusting the Start Parameter.

3ds Max standard light multipliers do not behave in the same way that V-Ray lights do. When using Inverse Square falloff, the multiplier must be set to a very high value in order to appear within the scene. A good value to start from is 800, as this roughly equals a standard V-Ray light. The multiplier is also affected by the start decay parameter. The lower the decay, the lower the multiplier needs to be. You may end up setting the light multiplier up in the thousands to get the correct illumination in accordance to the decay.

Under shadow parameters, turn on atmosphere shadows and area shadows. This softens them as the shadow moves further away from the casting object. Increasing the subdivisions here will also improve the shadow quality and reduce noise.

3ds Max standard light multipliers do not behave in the same way that V-Ray lights do

Go to Environment Effects and add a V-Ray Environment Fog to atmosphere effects. Under V-Ray Environment Fog nodes, add the Direct Light. Turn off Use All Lights so the volume light effect is only applied to the lights you choose.

In the general parameters, you can either set the fog colour here or within the Directional Light. You cannot mix the colours, so one must remain white to be inactive. The Fog Distance controls the length the volume light will travel along the direct light, so set this distance to be the light’s entire length.

The fog height also affects the visibility. Therefore this setting must cover the entire height of the light. If the light is positioned 9,000mm above the floor, then this must be your minimum value. A good way to determine the value is to draw a rectangle that covers the height and length of the scene.

In order to get the correct volume light effect, exclude objects so that only the volume light is visible

V-Ray Environment Fog is an atmospheric effect that is calculated during rendering using a brute- force method. Therefore it is important to optimise the settings so that the render times are not too high. The subdivisions parameter controls the noise level. Lower values produce more noise, whereas higher values produce less at the cost of longer render time. Start with a value of 16 and increase in increments of 8 until you are satisfied with the results. Usually 50 subdivisions are adequate, but you may need to go up to 100 depending on the scene.

If the scatter GI parameter is enabled, the volume light will scatter throughout your scene, via Global Illumination illuminating surrounding objects. In addition to just direct light, this will add further realism but it can render very slowly. You may find that after a certain value the results are the same; try setting this to 8 and then 16. If not, then a value of 8 would be adequate.

http://www.creativebloq.com/3ds-max/how-create-volume-light-effect-10135111

Advertisements

How to create stylised characters in ZBrush

Character artist Michael Ingrassia shows how you can develop your sculpting skills and find your artistic direction.

 

As a 3D game artist, I have always preferred to work on stylised art projects rather than realistic ones. Stylising allows for creative freedom and extending belief of subject matter over realism.

There are many tools within ZBrush that artists can use to achieve stylised sculpting effects, from massing out the form using DynaMesh to a wide variety of sculpting brushes and techniques. However, many of these tools and techniques can seem overwhelming or intimidating to artists who are just starting out. My tried and tested methods will help you streamline and simplify sculpting and stylising, using a few easy methods and tools you’ll learn to master quickly.

01. Massing the base mesh

One method I have used quite successfully in my years of sculpting characters is creating a very simple base mesh, doing some basic sculpting on the mesh (which I call ‘massing’), then reimporting the mesh at one or two division levels higher.

It’s a really quick way to get your character modelled efficiently, and the new mesh will only require a small amount of re-topping instead of having to re-top the entire character. This method is similar to ZBrush’s new DynaMesh tool but with more control over the topology. I’m able to quickly add any necessary topology and edge loops in my 3D program then import the mesh back into ZBrush.

Game artists will find this process works really well because the new base mesh is game-ready and will handle the final decimated mesh when backing out normals and ambient occlusion maps in programs like TopoGun.

Try massing the head sculpt. Look in the Source folder in the files accompanying this video, where you’ll find base_meshHead.obj, a low-poly base mesh to experiment with. Keep base meshes very simple, evenly spaced quads with the minimum vertices possible. In minutes, you’ll have a good detailed base mesh that only requires simple re-topping.

02. Chiselling and polished edges

The main brushes I will be demonstrating in this tutorial include Standard, ClayTubes, MAHcut Mech A, Orb Cracks, Polish B and Rake. Once I have the character’s form massed out, I will begin working with several of my favourite sculpting brushes like Polish B and MAHcut Mech A to begin chiselling, carving and refining the edges, giving the character a nice clean and polished look.

03. Hair sculpting techniques

To create a manicured looking beard, mask out a section of Sir Robin’s chin to sculpt some added mass, and define the shape of the beard further using the ClayTubes and Move brushes. Then mask out the character’s head to inflate the mesh uniformly before you begin sculpting a lovely head of flowing hair.

Start sculpting by selecting the ClayTubes brush again, but this time disable the square alpha map to achieve smooth, thick, liquid strokes. It’s important to sculpt the lower lying hair first, then swiping upper hair strokes in alternating ‘C’ and ‘S’ shapes. Repeat some strokes using a reduced brush draw size and add final top layer strokes where you want the main hair peaks to be.

Soften the strokes you’ve made using the Smooth brush and then switch to the MAHcut Mech A brush. Holding down Alt, outline the shape of each hair tuft first to establish the main individual shapes, then on a second pass come back through each strand’s centre to enhance the primary curvature.

04. Stitching brushing tips

Before jumping into adding stitches on your sculpt, it’s usually wise to prepare the different brushes’ stroke and intensity settings. Whether using ZBrush’s default stitch brushes or custom alpha maps, each stitch will react differently, so you’ll want to practise each of the stitches on a curved shape, such as a sphere.

To give a unique look and feel on some parts of the character, I recommend sculpting some stitches directly rather than using a Stitch brush or alpha map. In the video I demonstrate how easy it can be to create a simple stitch with rivet and clothing stress pull. Paying special attention to little details like this will set your work apart from others.

If you’re curious about creating your own Stitch Alpha map, take a look at MIstitch.psd, my custom stitch alpha in the scene files accompanying this tutorial.

05. Sculpting Sir Robin’s cap

The first part of the cap sculpt will address the need for adding in some basic cloth folds. These simple folds will help to make the cap look more organic and less rigid. I’ll then add a noise texture pass using a Spray setting with a Cracked Rock alpha. This gives the cap a nice felt cloth look quickly. It’s important to do this texture pass first before adding details such as stitches.

Getting the stitching pattern to step and repeat smoothly and flow along the model’s contour can take some trial and error – especially when pulling a seam around a mesh that needs to be turned in order to finish the stroke. One method that works best is to gently smooth the last stitch of the stroke so you can continue pulling the stitches to the end. At the end of the stitches, slowing down will give more control when ending the stroke.

06. Cloth folds

When modelling fabric there are some key factors to consider: gravity and weight. Gravity affects cloth as it flows down and sags or drapes around the torso. Sweeping alternating curves help to provide a feeling of fabric weight due to gravity.

Another factor is stress, and the tightness caused by the pulling effect on areas such as the armpits and crotch. This type of fold tends to fan outward from the primary point of tension. It’s important to vary fold width and distance from one another – as well as varying thickness and length – to look more realistic.

Creases in areas such as inner elbows and behind the knee also need to be considered. Cloth tends to fold in a criss-cross or accordion shape; creating a series of alternating inward and outward strokes using the Orb Cracks brush helps to get nice results quickly.

Finally, don’t forget the body wearing the fabric – the underlying anatomy. Some areas such as the shoulders, elbows and kneecaps cause a stress that displays the muscle or bone beneath the cloth. The folds near these areas tend to be small stress pulls, but it is important to pay attention to creating these subtle folds.

07. Dark-to-light Polypainting techniques

Polypainting can be difficult at times, especially when you’re first learning the ropes. One method I personally prefer and which works well with stylised characters is painting ‘dark to light’. It’s an old traditional method used by the masters in oil painting that also works well in texturing: it helps simulate cavity painting without the pain of setting adjustments.

On skin textures such as the face I’ll also use a heat intensity technique where I use a Colour Spray pattern and spray alpha to apply cool blues to colder areas of head and neck, and red/orange shades to the warmer areas of the face like the eyes, nose and mouth areas.

I’ll then do a final build-up of highlight tints – lighter flesh, pale yellow and finally a warm, off-white colour. I also change my alpha pattern to a scratched texture, which gives the appearance of burnished surfaces and hints of skin reflection.

If you want to try Polypainting Sir Robin yourself, look for decimated_ headSculpt.obj in the scene files accompanying this tutorial.

08. Polypainting Robin’s sword

Working on the sword texture incorporates many of the same Polypaint techniques but with stronger colour shifts and highlight effects. Begin by colouring the entire object with black, followed by a spray pattern with dark olive green. I use olive because it’s a neutral earth tone shade that works well with many materials, from worn leather to shiny brass.

As I begin building up the colour layers, I’ll also hit many of the different materials with the same shade of colour just to keep them in unison with each other. As I begin to fine-tune each material, I add highlights and burnishing effects.

One final trick I’ll add is a gentle overspray of a complementary colour. For example, if a leather is greenish in colour, I’ll gently run over some areas with a deep reddish brown shade to tone down the green and give it a more natural, realistic feel. On shiny brass or gold material, I’ll add some soft desaturated purple or blue hues, which helps give a pleasant fill light effect.

In the accompanying scene files, you’ll find swordPolypaint.ztl, the full sword .ZTL file with all division levels and Polypaint details.

Michael Ingrassia is a character artist and instructor, specialising in modelling and sculpture for games and film.

 

http://www.creativebloq.com/zbrush/how-create-stylised-characters-10134739

Photoshop for web design 20 tips

For many web designers, Photoshop still plays an integral part in the website creation process. Whether you’re mocking up your entire site, or just designing individual site elements, here are some Photoshop web design tips that may prove useful for your next project…

01. Use grid systems

Grid systems for Photoshop
There are a number of tools to help you use grids in Photoshop

Grid systems can save a lot of headaches in web design. Try using free resources like Cameron McEfee’s GuideGuide Photoshop extension and the Grid System Generator to make custom grids easy and accurate.

Read the rest of this entry

Adobe Creative Cloud: everything you need to know

2013 has been a big year for Adobe. Rather than jumping from CS6 to CS7, the design software giant instead released new ‘CC’ versions of Photoshop, Illustrator, Dreamweaver, After Effects, InDesign, and more, exclusively through its Creative Cloud subscription service. All new features and products will be released this way from now on – so unless you want to be stuck on CS6 forever, you need to sign up.

Are you going to subscribe? There’s a lot to take in before you make the decision, so here we’ve collected our articles about the Creative Cloud together in one handy post to help you out. See below to discover where you can find the exact details you’re looking for…

Read the rest of this entry

7 things you should NEVER ask a designer

 

For the most part, designers are lovely, amicable and keen to work. But ask them the following and you’re likely to come away with a stylus inserted where the sun doesn’t shine…

Clients – you’ve got to love them. Except when you secretly want to strangle them.

Yes, of course, clients are the people who pay our wages, and so even when they’re at their most frustrating, we keep these feelings to ourselves, smile sweetly and remain calm, polite and helpful. But there are some things calculated to get our blood boiling inwardly – and here we’ve rounded up the biggest culprits…

01. Can we have the layered files? We just want to tweak them in-house

“You want my layers? You’re going to have to come through me to get them!”

It’s an old favourite, and one that clients will try so they can potentially get their in-house team (or more likely someone they know) to have a play with the files and potentially change the whole look and feel – even if it’s just a font change that they don’t like – of the entire project.

Your likely response will be: “I can’t give you the layered files as they are too large to transfer and in an order only I can understand. If you want to tweak the final result, we can discuss this.

But you want to say: “Why should I give you the layered file when I just know you’re going to change everything and f**k it all up?”

02. Could you do something in the style of [insert name here]?

Here’s how this story goes: a) Client sees something they love b) Client finds out who did it c) Client realises that designer would cost them a fortune d) Client asks you to replicate this style for a fraction of the cost.

It’s incredibly frustrating when this happens – you thrive on having your own style and aesthetic. Why would you want to copy someone else’s style? Plus, you’re bound to get some stick for it on social media and if you publish it to an online portfolio.

Your likely response will be: “I respect that style and think it’s great – however, have you seen this that I did for [client]?” I think this style could work equally well.”

But you want to say: “I’m sorry, ripping people off just ain’t cool, man.”

Read the rest of this entry

%d bloggers like this: