It is very easy to print images either on the color desk jet or the laser printer, and to record video images from the computer to a VCR tape. To do this you need some programs on the SGI. Before you get into QC, click on Find on the application bar, and then Icon. A small window appears. Type in Snapshot and the snapshot icon will appear in the small window. Click and hold on the snapshot button and move it to your desktop. Drop the icon there by releasing the mouse button. In an analogous fashion, transfer the following icons to your desktop: imgworks, mediarecorder, videoout , and moviemaker. To record still images, use either snapshot (easier) or mediarecorder (more difficult, and only available on the O2's). Videoout, mediarecorder, audiopanel, and moviemaker are only available on the O2's.
PRINTING IMAGES FROM QUANTA/CHARMM and the INTERNET
Changing Q/C backgrounds from black to white before printing to laser printer: You can print images to either the laser jet (B&W) or the color desk jet. If you print images from Q/C to the laser jet, you need to change the background color of the Q/C window from black to white. so you don't waste ink on the background. Do this by selecting the following Q/Ccommands starting from the top menu bar: PREFERENCES, COLOR DEFINITIONS, BLACK AND WHITE.
Captuing still images with snapshot: The various windows in QC on the right hands side of the desktop will probably obscure the snapshot icon. Rearrange or temporarily minimize the windows with the menus to see the snapshot icon. Double click on the snapshot icon. A small bar with snapshot written on it appears. Move this bar to the upper left of the image that you wish to capture by moving the mouse without depressing the mouse button. Sometimes, the bar appears at the top left of the desktop, which is not the optimal location for your snapshot. Depress AltF7, which should allow you to move the rectange to the desired position. When the cursor is moved to the bar, the cursor changes to a camera. Click and hold the left hand mouse button at a corner of the bar and move the mouse, in the process sweeping out a red rectangle. A picture will be taken of everything in the red rectangle. Practice with the correct placement of the snapshot bar and sweeping the image to capture the image you would like. Once this is done, put the cursor on the bar again, and this time, click and hold the right hand mouse button. Select save a new file, and type in the file name when prompted. Hit enter, and then, pointing to the bar (with the cursor in the camera mode), click the right hand mouse button and you will be prompted to save the filename you just typed in. Click the Save Filename with the right button. You have just created a FILENAME.RGB file (red/green/blue file) which can be printed easily on either printer. You may exit QC or just minimize it, and then double click on the imageworks icon that you moved to the right of your desktop. Select File, then Open, and from the list of possible file, chose the one you just created. Select Print, chose the printer of your choice, and then soon you will have your printed image.
Captuing still images with mediarecorder: This is only available on the O2's. Double click the mediarecorder icon on your desktop. A window will open (after a time delay). One the top menu bar, click Options, followed by Set Scratch Disk. With the left hand button select the directory listed and then click Remove. The in the new scratch disk directory type in the pathname for the folder you want the file to appear. (For myself, I type /usr/people/faculty/chem/hjakubow/www-docs/) Then select OK. From the top menu bar select Task, followed by image and then screen snapshot (or another choice if appropriate). Now att the bottom left of the medicarecorder window are 3 buttons, representing film, sound and picture. Click on the right picture button, and then in sequence, image from screen and select area. You will be prompted with a red camera image to sweep out an area for recording. Then click on the red button at the bottom right of the mediarecorder window to take the snapshot. The image will be recorded as image1.rgb and placed in the director you set above.
Do save a direct image from the WWW, just right-click on the image and followng the options to save it. You can then open it with imageworks as shown below.
Viewing and Manipulating Images: Now select the imageworks icon . Select File, then open, and select the file you wish to open. Explore the options you have to modify the image (including rotating, shrinking, sizing, changing color and contrast, posterizing, etc) by selecting items from the top menu bar. If you change an image in an inappropriate way, go into Edit and select Undo (the last modification). Save the file by going to File and Save. You may save it as one of several file types including SGI (rgb), GIF, JPEG, etc.
Printing Images: From imgworks, select and open the file you wish to print. Then select File from the top menu bar, then Print. You will be prompted with a list of printers. ASC233c is the color printer in the computer lab. Select this and print.
Before you print a plot that was saved as a postscript file, it is useful to view the plot before you waste precious ink in printing it. (Refer to section on how to print postscript files from Q/C or any other postscript file on the SGI's, such as Ramachandran plots.) Select Find, Icon and then type in Xpsview. Then double click on the xpsview icon, open the appropriate postscript file (file.ps), and view it.
CREATING VIDEO IMAGES FROM QUANTA/CHARMM OR THE INTERNET
It is quite simple to transfer screen activity directly to a VHS tape or to bypass the videotape and directly create a QuickTime or MPEG movie. Instructions for both are given below.
Transfering screen activity to VHS tape: You can directly transfer images from the SGI monitor to videotape without using a hand-held camera. In addition, you can record audio to the tape as you are recording. You need to use the department's Panasonic Super VHS and JVC television with super video input (S-Video). The video equipment should be connected to Planck, the O2 in the right hand back corner of the room against the corridor wall.. The TV/VCR are usually stored in the animal room in the Biochemistry/Nutrition Lab. Students must get permission to use this system, and strictly follow the procedures and policies for use .
The audio and S-video cables are already connected to Planck. Move the VCR/TV into the back corner next to Planck and connect the audio cable from Planck to the top connector of the Audio In on the Panasonic VCR. Connect the S-Video cable from Planck to the S-Video In on the VCR. Plug the TV/VCR in and power on the TV and VCR.
Log into QC, Spartan, other SGI programs, or the Internet, and pull up the images or downloaded video you wish to record. Click on videoout on the desktop. A small red outline of a rectangle well appear. Move it to the lower right hand side of the desktop. Live Video Image will appear in the box, along with a large white rectangle. Use the left hand mouse button to grab the rectangle and move it to surround the image you wish to videotape. You may have to scale the image so fit the rectangle.
On the left hand side of the VCR, pull down the cover (over the power button) to expose the control panel. Push Input until you see the image on the SGI monitor on the TV screen. (Input select line will temporarily appear in the TV screen when you push the input button.)
If you wish to narrate the video, you need to obtain audio control. Click on Desktop and then Audio Panel on the upper left window of the SGI desktop. (You may have to temporarily move the QC window to see the Desktop which will probably be underneath the QC window.) An Audio Control window will appear which you should move to an important area of the screen. Turn the volume on the TV to 0. Click on the Analog In (Grey Bar on the left miniwindow) which selects that window. Then click Selected , Input Source, Microphone. Likewise click Selected, Sampling Rate, 48 kHz. Then move the slide bars settings for Speaker Setting on the Analog Out l window to 0. Move the slide bar on the Analog Input to a medium setting. Click on Monitor and Meter as well. A red check in the boxes will appear. The microphone is connected to the cable on the keyboard. Remove it and speak directly into it. The meter on the control panel should show the sound intensity. In addition, the meter on the VCR will respond as well. On An. In, Input source - Microphone On An. Out, Speaker/Line Out.We tried to always keep the sample rate at 48kHz. Lastly, holding the microphone to the side of your mouth stops slight speach problems with the letter p and the distortion it causes.
You are now ready to record audio and video. Insert a VHS tape into the VCR. On the Panasonic remote control, slide back the bottom of the top cover to expose the control buttons. Push Clock/Monitor which activates the counter on the VCR. To start recording, push the RECORD button on the remote control. Manipulate the image or downloaded Internet video as you wish, while narrating at the same time if you wish. Use the mouse to point to images as you record. With your third hand, you can, in a timely fashion, push Stop on the remote control to interrupt your recording session. It comes in quite handy (no pun intended) to have a partner with you as you record, since most of us don't have three hands.
When finished, place the cursor over the box entitled Live Video Image, click the right hand mouse button, and then move to Quit. Close all windows, and exit. Power down the VCR and TV, and then remove the video and audio cable ONLY FROM THE VCR.!!!!! Do not remove the connections from Planck.
Students: The TV and VCR must never be left in the computer room unattended, unless you wish to lose privileges and get a 0 on your video project.
Making QuickTime or MPEG movies: Double cllck the mediarecorder icon on your desktop. On the top menu bar select options, followed by set scratch disk. Click on the path name present, and then select remove. Type in the new path name, /tmp. Movie will be recorded as movie1.mov in this folder.
At the bottom left of the window, hold and select the movie icon, followed by from screen with software, and then select area. A red movable camera will appear and by moving the mouse to the upper left hand corner of the area you would like to capture, and then holding the left hand mouse button and sweeping out an area you can select the region for filming.
Next click Task on the top menu bar, followed by movie, then custom settings. A new window will appear with two tabs, an audio and video tab. On the video tab select format: - QuickTime; Compression - Quicktime Animation or Video; Frame Size - NTSC half; Frame Rate - 30;. On the audio tab click format - QuickTime, Channel - Mono; sample rate - 11.025 kHz. If you don't want audio click do not record audio.
Next select Edit on the top menu bar, followed by set delay to record at 3 sec. Now you are ready to record.
Click the red record button on the bottom right of the window. When done, click the square stop button. You movie will be saved to the scratch disk folder set above. You may cancel the saving as prompted.
Editing Quicktime or MPEG movies: Double click on the moviemaker icon on the desktop. Open up the movie you have recorder. You can add addition segments to your movie by selecting import additional. The added movies must not be longer than 30 seconds. Save the final movie as prompted.
LAST UPDATED: APRIL 27, 1998