Day 5 part 2

Introduction to Zbrush Digital Tutors

Adding Materials

– The material palette is found on the left shelf and contains 2 types of material: Standard materials which apply an effect to the model and MatCap materials which simulate specific real-world materials.

the materials palette conatains 2 types of material that can be applied to models to change the appearance.

– materials can be polypainted onto a mesh: apply a material then use the M channel to paint on the mesh; when the main material is changed the painted material will remain. Because this is polypainting the border between the materials will be sharp.

materials can be polypainted onto a model using the M channel.

– To apply a material to the model use the Colour > Fill Object command; the model will keep its material even when a new one is selected in the material palette.

– The Material palette contains ways to modify materials. Common options include Ambient which produces a glowing appearance and Diffuse which affects the brightness of the diffuse colour.

– Material > Modifiers > Diffuse Curve can be used to modify the way the colour reacts to the direction of the light, eg have the colour darker on the light-facing side of the model.

The modifiers subpalette contains many options for changing how the material reacts to light

– Material > Modifiers > Specular affects how shiny the material is. Specular Curve can be altered to affect where the material reflects light.

– Once a material has been modified, open the Material Palette to save or copy the material. You can also load new materials.

Modified materials can be saved and copied through the material palette

– MatCap materials have different options from standard materials in the Modifiers subpalette.

– Material > Wax Modifier creates a subsurface effect on the material. Use the Wax Modifier > Strength to increase the appearance of the effect.

Wax Modifier contains options for creating a subsurface effect on the material.

– If you wish to reset the material on the model you can either do a new FillObject or use the Zplugin Subtool Master; select then reselect colour and material and it will totally reset the model, allowing for quick switching between materials without needing to use FillObject.

Use the Zplugin Subtool master’s Fill option to reset the material assignments on the model.

Day 4 part 2

Introduction to Zbrush Digital Tutors

Basic Polypainting

– Polypainting is colouring a mesh using the polygons rather than a UV-based texture map. Polypainted models can be used to create texture maps, but for high-resolution maps a high-polygon model is required.

– Polypainting uses the same brushes as sculpting, but ZAdd and ZSub should be switched off and the RGB channel switched on.

Polypainting is usually started by switching the Zadd/Zsub buttons off and enabling the Rgb channel, once a base colour has been chosen.

– If you try to choose a colour now the whole mesh will change. To start polypainting properly, select Colour > FillObject. The mesh now has a colour applied and new colours can be selected for polypainting.

USe the FillObject button to set the base colour on the model, allowing for polypainting to proceed.

– Colour can be combined with strokes and alphas to get different paint effects.

Colour and brushes can be combined with strokes and alphas for many different effects.

– to pick a colour from the model, LMB + Drag from the colour palette onto the model. The cursor will change to the Pick symbol.

– Use DragRect stroke with alphas to draw coloured instances of that alpha.

Use the Dragrect stroke to precisely place coloured alphas.

– Rgb Intensity slider determines the strength of the polypainting colour. A higher intensity builds up colour more quickly.

– Sculpting and polypainting can be done at the same time, eg for sculpting boils and pimples.

Use Zadd/Zsub in conjunction with polypainting to sculpt and colour detail in one go.

Day 1 Part 3

Introduction to Zbrush Digital Tutors

Pixols and the 2.5D canvas

– a pixol is a pixel that contains colour, depth, and material information.

– open the tool quick menu to select 2.5D brushes. 2.5D brushes can have strokes and alphas applied to them like sculpting brushes.

open the tool quick menu to see the 2.5D brushes.

– pixols can be tranformed using the Move, Scale and Rotate buttons. Select Draw to continue drawing in 2.5D.

Pixols drawn on the canvas can be transformed using the move, scale and rotate tools

– use EraserBrush to remove pixols from the canvas.

Use the EraserBrush to remove pixols from the canvas.

– materials and colours can be changed during the drawing to overwrite pixols already on the canvas.

the material and colour applied to the pixols can be changed during the drawing.

– disable Zadd / Zsub during the drawing to avoid adding depth to pixols already on the canvas, only painting with colour and / or material.

– Mrgb allows for changing colour and material of pixols on the canvas without affecting depth.

–RGB allows for changing colour of pixols on the canvas without affecting depth or material.

– Mrgb / RGB buttons can be disabled entirely to allow drawing depth without affecting the colour or material of the pixols.

Use combinations of ZAdd/Zsub, Mrgb and RGB options to draw with different depth, colour and material affects.

– Document > Save As saves the canvas out as an image, not a 3D model.

– SnakeHookBrush allows for dragging out tendrils with depth.

– FibreBrush allows for covering pixols in fibres / hair

Other brushes can be combined to get interesting 2.5D effects

– SphereBrush always paints with a perfectly round edge, which can be made larger with more pen pressure or larger strokes.

The SphereBrush with different strokes.

– AlphaBrush draws in the shape of the current Alpha at a single depth until a new stroke is started.

– Smudge brush can be used to smear pixols around on the canvas. Combining different strokes and alphas will give different effects.

Different effects using the Smudge Brush with different strokes and alphas.

– Hook Brush can be used to pull pixols out. LMB + Anti-clockwise spirals shrinks the pixols, while LMB + Clockwise spirals enlarges them. Hook Brush can be combined with alphas for different effects.

The effects of the Hook Brush using spiral gestures and alphas.