MANUAL DELFTSHIP ESPAOL PDF

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The linesplan used for this tutorial is from an old motorboat. It's a hard chinedmotorboat with slightly curved sides at the stern.

During this tutorial also a lot of the basics will beexplained. Fill in the appropriatenumbers. Start a new modelIllustration 2: : New model window.

Thelinesplan we're trying toreproduce is a hard chinedmotorboat. The first thing we'regoing to do is create a knuckleline that is going to be thechine of our motorboatTurn the normal edges intoknuckle crease edges. DELFTship draws creaseedges in red. Creating knuckle linesActionSelect the edges as shown in image 3. You can select them one by one byclicking on each edge with the leftmouse button. An easier and fasterway is to select just one edge whilekeeping the Ctrl key on your keyboardpressed.

DELFTship automaticallytraces and selects the connectededges. Illustration 3: : Creating a knuckle line. You can assign a different background image to each ofthese vies, except for theperspective view3. Inserting background images ActionSelect the window showing the profileview. If no such window is availableselect a random one and set the viewto profile view. This is done bypressing the right mouse buttonsomewhere in the window area. A popupmenu appears. Thisopens the file browser.

Select the fileyou want to use for a background image. DescriptionThe background image is nowinserted into your model. Everytime you select the profile viewthis image will be shown on the background. In most cases the background image is not yet onthe right location immediatelyafter the import.

We're going todrag it to the correct place now. The cursor now changes to a crosswith a big O indication you're going tochange the origin. Press the leftmouse button somewhere on the background image and keep it presseddown. If you move the mouse aroundnow you'll notice the background image being dragged around as well.

Ifyou release the mouse button againthe viewport will resume to normaloperation. Drag the image to the correct location. Theto scale it to the correct cursor changes to a ruler to indicatedimensions. Now click on a point of the background image of which you knowthe exact coordinates. The further thispoint is away from the origin the better. Once a point has been selectedanother window shows up promptingfor the coordinates of the selectedpoint.

Enter the correct coordinates inthis point and close the window. In our example the coordinate of theuppermost point of the bow is 6. This is particularly convenient if you'reimporting multiple background images originating from the samelinesplan. So make sure you set the correct scale before importing thenext background image! In our case we import the same image threetimes once for each view so having exactly the same scale for eachimage is crucial.

DescriptionBackground images with largewhite areas, as is often thecase with a linesplan, can bevery dominant. You can avoidthis by assigning a transparentcolor. Areas with thetransparent color will not bedrawn on your screen. In caseof a black and white linesplanonly the black lines will remainvisible.

Click on a spot of your background image with the color youwant removed. The background imagewill now be redrawn in transparentmode. If you find the image still too dominanttry blending it with the background. Note: You can remove transparency again by repeating this process. Instead of clicking on a spot within the background image simply selecta point outside the image.

DescriptionEspecially when usingcompressed images like jpegareas that appear white canconsist out of many shades ofwhite. Byincreasing the tolerance youcan remove that noise.

Experiment a bit with the value untilyou're satisfied with the appearance ofthe background image. For most jpeg images a tolerance of 35 works fine.

The higher the compression rate of thefile, the higher the tolerance needs tobe. Importing more images DescriptionNow we're going to assign acontrol curve to the deckline.

This control curve is going tobe used at a later stage to:1 Match the shape ofthe deckline of the background images 2 Fair the deckline insuch a way that weend up with a verysmooth curve. Assigning control curvesActionSelect all of the edges from thedeckline see also step 2.

A blue curve is now visible. It is bettervisible if you hide the control net. Repeat this to add a control curve tothe chine we've created in step 2.

Add a control curve to the contourline. Select all edges on the centerplane ofthe ship, including the edges of thebow. Adding the other control curvesDescriptionThe first thing we're going todo is to try to match ourdeckline to that of the background image.

Modifying the shape is done byselecting a controlpoint of thecurve and dragging it toanother location. Shaping the decklineActionTurn of the control net see step 9.

Choose the plan view and select thedeckline. Once the deckline is selectedthe controlpoints and edges used forthis curve will be shown together withthe curvature plot the purple lines. Ifthe curvature plot is not visible thereare two possibilities:1 The display of curvatureplots is disabled. You can increase ordecrease the scale bypressing F10 or F9. Move the controlpoints with the mouseto their new locations. Start with thestartpoint and endpoint.

Then movethe interior points of the curve. If thedeckline is roughly similar to that of the background image check yourcurvature plot. Make sure thecurvature changes gradually along thecurve. If not then adjust thecontrolpoints nearest to the curvaturepeaks or valleys.

Try to distribute thepoints evenly along the curveIllustration 4: : Deckline before. Illustration 5: : Deckline modified to match the background image. Shape the chine and profileActionDescriptionNow our hull looks the same inthe plan view as the originallinesplan. The profile howeverstill differs. Now we can switchto the profile view and movethe points again with themouse. By doing so you runthe risk of accidentally shiftingthe points in longitudinaldirection, undoing our preciouswork of the previous step.

This is the distance a point is beingmoved if we press one of the cursorkeys on the keyboard. Click on it with the mouse anda window shows up requesting thenew distance. Set it to 0. Now eachtime we press a cursor key theselected controlpoint will be moved0. Illustration 6: : DELFTship statusbarDescriptionNow we're going to match thecontrolcurves in the profile viewby moving controlpoints withthe cursor keys rather than withthe mouse.

Matching the profile viewAction1 Select one of thecontrolcurves. Startwith the start and endpointsagain. Repeat this for allpoints until the curvecoincides with thecorresponding curve of thelinesplan4 If you find that theincremental distance is stilltoo large then reduce it. The mainfeature lines of the hull arefinished and the boat shouldlook very similar to the one ofthe linesplan. Now we're goingto visualize the surface of thehull in 3D.

Thehull surface will be shaded usingvirtual lights. Parts of the hull that aresubmerged are shaded in grey whilstthe rest of the hull is shaded green. You can rotate the model by keepingthe middle mouse button ormousewheel pressed while movingthe mouse. If you have no middlemouse button you can use thescrollbars at the bottom and to theright of the perspective view.

DescriptionOur boat has no transom yet. We're going to add a new facemanually to fill in the transom. Adding a new faceActionSwitch to perspective view. Select the points shown on illustration7. Start with the point on thecenterplane, then the point on thechine and finally the point on thedeckline. If you need to select morethan one point you need to keep theCTRL-key on your keyboard pressed.

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DELFTship tutorial – Using background images - Boat Design Net

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Delftship - tutorial en español

Designed from the ground up using state-of-the-art technologies, DELFTship allows you to derive all data needed for calculations from the model itself. This guarantees data consistency between all elements and extensions. Work smarter, faster and with user-driven software built on years of product development in real-life environments - all based on TU Delft research. Get started and explore our free hull form modeller.

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