Googles Sketchup 8

7/27/2019 Googles Sketchup 8

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Google SketchUpGoogle SketchUp

-- AA briefbrief introductionintroduction --

Luana Valentini

InternetGIS course - 2011


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Create 3D models and share them with the worldCreate 3D models and share them with the world

Google SketchUp is software that allows you to create 3D models

of anything you like.

Model anything you can imagine:Redecorate your living room. Design a new piece of furniture. Model your

. ,

an animation and share it on YouTube. There's no limit to what you cancreate with SketchUp.

You can build models from scratch, or you can download what you

need. People all over the world share what they've made on theGoogle 3D Warehouse. It's a huge, searchable repository ofmodels and it's free.

http://sketchup.google.com/3dwarehouse/?hl=en-GB&ct=lc


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3D tools3D tools

Orbit tool to look around the 3D model

Zoom tool to zoom in/zoom out

Basic Tools:

Pan tool to move your view (without orbiting)

or use the scroll wheel to navigate:

Roll the wheel

forward andbackward to zoom

Press and hold thewheel to orbit Press + Shift to pan


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Draw shapes (1)Draw shapes (1)

Rules:

1. Draw a closed loop of edges to create a surface

2. Watch the axis directions and use inferring to line un edges

Inferring: ability of SketchUp to line edges for you

Simply hold on to the point you want to line up with for few seconds and thengo back and draw slowly until SketchUp shows you a dotted line


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Draw shapes (2)Draw shapes (2)

Rules:

1. Learn and use the different inference points

End point

Middle of an edge

Intersection

On the edge

1. Always draw to and from existing edges

dont draw new edges over existing edges

On the face

midpoint -midpoint


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Drawing (1)Drawing (1)

Rectangle: to be accurate with the rectangle type the

dimensions separated by a comma (e.g.: 3m,5m) andpress Enter.

Line: you can type the length of the line. Any edge cane su v e : r g c c an c oose v e , en move

the cursor to choose the number of segments.

Press Esc to stop using any tool. Right click to see Entity Info.

Circle/Polygon: you can type the radius of the circle.You can change the number of sides by typing a number

followed by the letter s (circles have a default of 24sides, polygons 6). Hover your cursor over the edges tosnap to center points.


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Drawing (2)Drawing (2)

Arc: is a 3 steps process:

1) define the first end point of the arc;

2) define the second end point of the arc;

3 define the radius of the arc.

You can type an exact radius if needed and also snap to a half circleinference or draw arcs tangent to adjacent edges (magenta lines andarcs to indicate tangency), also in sequence (blue: the new arc is tangentto the previous one).

By default arcs have 12 segments, type a new number + s if you wantto change it.

Freehand be careful not to cross over edges


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Tools (1)Tools (1)

Push/Pool tool

It works on any flat shape, in anydirection (direction perpendicular to

the surface)

Accuracy:

begin an action (such as push/pool)

type in a value (e.g.: 15cm for 15 centimeters, 4.5m for 4.5meters)

press the Enter key


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Tools (2)Tools (2)

Push/Pool tool

Use the inferring capacity to beprecise.

If sides are parallel you can also cuto enin s (unless you have an edge

on the other side).

Move tool

You can move:

Endpoints

Edges

Surfaces

Selected Entities

Grouped Objects

Follow me tool: this tool requires aprofile shape and a path to pull the

shape along.

Http://www.youtube.com/watch?v=GOxrFN7JbiQ


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Tools (3)Tools (3)

Tape Measure tool:

1) measure edges and distances;

2) create construction geometry/dashed guidelines;

3) resize individual groups or the entire model.

Protractor tool: to measure angles and createconstruction guide lines. To measure an angle, click onceand release to anchor the center point. Then click again to

define a reference point and a third time to finish and createthe guide line. You can always type a value.

Axes tool: allows you to reorient red, green, blue axes. Clickonce to place the axes origin, then move the red axis in the

desiderated position and click again to place it. Do the samefor the other two axes.


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Tools (4)Tools (4)

Eraser tool

It only affects edges, not surfaces. You can hold the button down anddrag over multiple edges. Toggle X-Rays mode on to erase edgesbehind a surface.

.

Hold the Ctrl key to soften an edge surfaces with a smoothgradient. Unsoften edges by holding Ctrl+Shift

Selection tool

You can select individual entities by clicking on them with the Select tool.A single click will select edges, surfaces and objects that are groupedtogether.

E.g.: one click select the surface, a double click selects the surface and

its bounding edges. A triple click selects all connected geometry.


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Components vs GroupsComponents vs Groups

There are 2 ways to isolate geometry in SketchUp. You can create a Group or aComponent. Groups and Components look very similar, but they behave

differently.

Select all the necessary geometry, then choose Make Group from the Editmenu. That geometry now behaves as one entity.

,

icon from the toolbar. (Click the Create button on the CreateComponent window that appears).

Groups and Components appear the same, with a bounding box indicating theyare unique entities.

BUT: * Groups have no relation to each other; any copy of a Group is acompletely unique entity.

* Components are linked to each other, any change to one component isreflected in every instance of that Component.

If you are not going to make any copies of your object, make it a group.


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ComponentsComponents

To make changes to geometry inside a component you need to edit thatcomponent: right click on the component and choose Edit Component, then

make changes (or double click on the component with the Select tool). Rightclick outside the component and choose Close Component when finished (orleft click outside the component with the Select tool).

Any components you create are stored in the Components Browser:Window > Components


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Goal: get great levels of detail into your model without

overtaxing people systems who want to browse the scenesthat you have made.

Modeling for Google Earth (1)Modeling for Google Earth (1)

Clean surfaces that are not seen in anyway (e.g.: interior surfaces,bottom surfaces, etc.) or invisible geometries.

Important detain only, according to the scope.

Whenever possible, use single flat faces.


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Simplify curves: the default arcs and circles in SketchUp are too

complicated to work well in Google Earth (e.g.: 8 faces instead of anarc).

Modeling for Google Earth (2)Modeling for Google Earth (2)

o ours: or sma aces or ar o p o ograp areas n your mo e ,

plain coordinated colours can work nicely.

Hide edges: once you have put the texture, turn on hidden geometry,select all and right click on edges to hide them.

Resize and cut your images before using them as textures beforeimporting them.


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Texture Optimization in Photoshop (1)Texture Optimization in Photoshop (1)

View > Show> Grid

if you want tosee a grid asa reference

http://www.youtube.com/watch?v=xHOKb_Q28Iw


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Texture Optimization in Photoshop (2)Texture Optimization in Photoshop (2)

Save for Web & Devices

The smaller the imagesthe better theperformances will be


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File > Import

and navigate to the optimizedimage that you want to use as a

Texture ApplicationTexture Application

.

Click on the lower left cornerand drag till you cover thesurface, then right click: Texture > Position

Right click and uncheck fixed pins. Move the yellow pins freely in the position on thephoto of the actual building edges.Click and drag the pins in the correct position on the model.

http://www.youtube.com/watch?v=9D3RymsC864


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You can start creating the model in the correct location

importing the view from Google Earth.

Click on the icon 'Add Location' to select the area you

Model Positioning (1)Model Positioning (1)

w :


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Google Earth tools:


View terrainAdd a newbuilding

Obtain/sharemodel orcomponent

StreetViewPhototexture

Preview inGoogle Earth


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If you havent created the model in the correct position, you canalways click on the lower left corner icon (Model Info) and go to the

Position tab:


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http://sketchup.google.com/3dwarehouse/buildingmaker?hl=en-GB&ct=lc

For some cities where Google has a proper imagery dataset you have thepossibility to easily build up a 3D model of buildings.

Google Building MakerGoogle Building Maker


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Levels of Detail:

CityGML plugCityGML plug--inin http://www.citygml.org/


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Assign surface types:

CityGML plugCityGML plug--in (1)in (1) http://www.citygml.org/


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Export:

CityGML plugCityGML plug--in (2)in (2)


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http://sketchup.google.com/intl/en_uk/product/gsu.html

http://sketchup.google.com/intl/en_uk/training/videos.html

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Googles Sketchup 8