OrcaFlex Manual - Orcina

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User Interface, Replays 3.6.10 Printing, Copying and Exporting Views 60 w 3D Views may be printed, copied to the windows clipboard, or exported to a windows graphics metafile, so that the pictures may be used in other applications such as word processors and graphics packages. First select the view and adjust the viewpoint as desired. Then to copy to the clipboard press CTRL+C, or select Copy from the pop-up menu. The pop-up menu also has commands to print or export the 3D view. If needed, you can first adjust the printer setup using the Printer Setup command on the pop-up menu or on the File menu. If you are printing the view on a black and white printer (or are transferring the view into a document which you intend to print on a black and white printer) then it is often best to first set <strong>OrcaFlex</strong> to output in monochrome (use the Tools|Preferences|Output menu item). This avoids light colours appearing as faint shades of grey. After a 3D view has been transferred to another application you should be careful not to change its aspect ratio, since this will produce unequal scaling in the vertical and horizontal directions and invalidate the scale bar. In Word you can maintain aspect ratio by dragging the corners of the picture, whereas if you drag the centres of the sides then the aspect ratio is changed. 3.7 REPLAYS A Replay is a sequence of 3D views shown one after another to give an animation. A replay is therefore like a short length of film, with each frame of the film being a snapshot of a model as it was at a given time. There are various controls and parameters that allow you to control a replay. There are two types of replay: � Active Simulation Replays show the model as it was at regularly spaced times during the currently active simulation. This type of replay is therefore only available when a simulation is active and can only cover the period that has already been simulated. If you have a time history graph window open when the replay is run, then the replay time is indicated on the graph. � Custom Replays are replays where you have complete control over frames which make up the replay. This means that, for example, you are not restricted to regularly spaced times; you can have frames from different simulation files in the same replay; you can include frames showing the static configuration of a model; you are able to vary the view size, view angles and view centre to achieve panning, rotating and zooming effects. Custom replays were originally introduced to help visualise series of static snapshots, for example during a lowering operation. However, the facility is very powerful and you are certainly not restricted to this application. See Custom Replays for details. Export Video Replays can be exported as a video clip in AVI file format, using the Export Video button on the replay parameters form. An AVI file is generated containing the replay using the most recently selected 3D view window and using the same period, frame interval and speed as the replay. When you export a video clip you will be asked to select a file name for the video using the standard Save File window. At the bottom of this window is a checkbox titled Include frame details in video. If this is selected then each frame in the video has details of that frame (e.g. simulation time) written in the top left hand corner of the frame. There is also a button which provides a link to the Video preferences. AVI is a standard video format, so the file can then be imported into other applications, for example to be shown in a presentation. The compression method (the codec) used for the generating the video file can be set on the Preferences form. Note: AVI files can be very large if the window size is large or there are a lot of frames in the replay. Also, resizing video clips (after pasting into your presentation) will introduce aliasing (digitisation errors), so it is often best to set the 3D View window size to the required size before you export the video. 3.7.1 Replay Parameters The replay can be controlled by the following parameters that can be set in the Replay Parameters form, accessed using the Replay Parameters button.
w Replay Period 61 User Interface, Replays The part of the simulation that the replay covers. You can select to replay the whole simulation, just one simulation stage (an asterisk * denotes an incomplete stage), the latest wave period or else a user specified period. If you select User Specified then you can enter your own Start and End Times for the replay period. These can be set to '~' which is interpreted as simulation start time and simulation finish time respectively. Interval The simulation time step size between frames of the replay. The value '~' is interpreted as the actual sample interval, i.e. the smallest possible interval. Using shorter intervals means that you see a smoother animation (though the extra drawing required may slow the animation). Example: For a simulation with stages of 8 seconds each, selecting stage 2 and a replay time step of 0.5 seconds causes the replay to show 16 frames, corresponding to times 8.0, 8.5, 9.0, …, 15.5. Target Speed Determines how fast the replay is played. It is specified as a percentage of real time, so 100% means at real time, 200% means twice as fast etc. Continuous Continuous means replaying like an endless film loop, automatically cycling back to the first frame after the last frame has been shown; this is suitable for replays of whole cycles of regular cyclic motion. Non-continuous means that there will be a pause at the end of the replay, before it starts again at the beginning; this is more suitable for non-cyclic motion. All Views If this is selected, then the replay is shown in all 3D Views simultaneously, allowing motion to be viewed from several different viewpoints. Otherwise the replay is played in the currently selected view window only. Show Trails If this is selected, then when each frame of the replay is drawn the previous frame is first overdrawn in grey – this results in grey 'trails' showing the path of each object. 3.7.2 Replay Control The replay can be controlled from the Replay menu, by using toolbar buttons or with shortcut keys. In addition, some replay settings can only be modified on the Replay Parameters form. The toolbar has a section dedicated to replay control: Figure: Replay toolbar controls The replay control buttons, menu items are listed in the table below: Button Menu Item Shortcut Action + SHIFT Replay | Start Replay CTRL+R Start replay Replay | Stop Replay CTRL+R Stop replay Replay | Step Replay Forwards CTRL+A Step to next frame and pause Replay | Step Replay Backwards CTRL+B Step to previous frame and pause Replay | Replay Faster CTRL+F Speed up replay Replay | Replay Slower SHIFT+CTRL+F Slow down replay Replay | Replay Parameters CTRL+D Edit replay parameters
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w Orcina Ltd. Daltongate Ulverston
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Contents 4 w 3.4 Libraries 40 3.4.1
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Contents 6 w 5.6 Dynamic Analysis 1
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Contents 8 w 6.5.23 Wave Scatter Co
Page 10 and 11: Contents 10 w 8.12 Results 444 8.13
Page 12 and 13: Introduction, Installing OrcaFlex
Page 14 and 15: Introduction, Parallel Processing M
Page 16 and 17: Introduction, References and Links
Page 18 and 19: Introduction, References and Links
Page 21 and 22: w 2 TUTORIAL 2.1 GETTING STARTED 21
Page 23 and 24: w 23 Tutorial, Dynamic Analysis sha
Page 25 and 26: w 3 USER INTERFACE 3.1 INTRODUCTION
Page 27 and 28: w Simulation Paused 27 User Interfa
Page 29 and 30: w Keys on Main Window New model Ope
Page 31 and 32: w Rotate viewpoint left (decrement
Page 33 and 34: w General: StaticsMethod: Whole Sys
Page 35 and 36: w A text data file saved by OrcaFle
Page 37 and 38: w 37 User Interface, Model Browser
Page 39 and 40: w Cut/Copy Cut or Copy the selected
Page 41 and 42: w 3.4.1 Using Libraries 41 User Int
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Page 45 and 46: w 3.5.1 File Menu New Deletes all o
Page 47 and 48: w New Vessel New Line New 6D Buoy N
Page 49 and 50: w 3.5.5 View Menu Change Graphics M
Page 51 and 52: w Preferences 51 User Interface, Me
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Page 55 and 56: w 55 User Interface, 3D Views � D
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Page 75 and 76: w Results 75 User Interface, Result
Page 77 and 78: w Replays 77 User Interface, Graphs
Page 79 and 80: w Axes 79 User Interface, Spreadshe
Page 81 and 82: w Command Line Parameters 81 User I
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w 5 THEORY 5.1 COORDINATE SYSTEMS 1
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w 125 Theory, Object Connections Di
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w 127 Theory, Static Analysis Final
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w 129 Theory, Static Analysis metho
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w 131 Theory, Dynamic Analysis for
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w Static Starting Position Simulati
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w 135 Theory, Friction Theory The n
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w where μ = magnitude of the vecto
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w 139 Theory, Extreme Value Statist
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w where σ = GPD scale parameter ξ
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w 143 Theory, Environment Theory Th
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w where Pu(z) = Nc(z/D)su(z)D Pu-su
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w 147 Theory, Environment Theory
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w Repenetration Offset After Uplift
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w 151 Theory, Environment Theory sp
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w Extrapolation Stretching 153 Theo
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w 155 Theory, Environment Theory st
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w 157 Theory, Vessel Theory individ
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w 159 Theory, Vessel Theory RAOs ca
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w 161 Theory, Vessel Theory Notes:
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w 163 Theory, Vessel Theory ω is t
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w surge/sway/heave M M.L roll/pitch
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w 167 Theory, Vessel Theory that co
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w 169 Theory, Vessel Theory separat
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w 171 Theory, Vessel Theory At this
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w Segment 1 Segment 2 Segment 3 Act
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w 175 Theory, Line Theory � If to
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w where component of M2 in the Sx2
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w The hysteresis model is described
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w � (90,90,90) sets Ex along -GX,
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w = v1 + p' + ω×p Therefore its a
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w y End A Stress ID z Stress OD O S
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w 5.12.16 Hydrodynamic and Aerodyna
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w 189 Theory, Line Theory Another w
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w Drag Chain Seabed Interaction 191
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w 193 Theory, Line Theory OrcaFlex
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w 195 Theory, 6D Buoy Theory clashi
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w 197 Theory, 6D Buoy Theory For Lu
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w 199 Theory, 6D Buoy Theory (due t
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w 201 Theory, 6D Buoy Theory Note:
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w α is the angle between the relat
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w 5.13.6 Contact Forces Contact For
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w Dynamic Analysis 207 Theory, Winc
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w 209 Theory, Shape Theory Finally,
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System Modelling: Data and Results,
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