GREDA Graphics Editor and Animator Version 1.00 User's Guide Copyright (c) 1993 - Robert Dobbins All Rights Reserved Shareware Version 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Table of Contents 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Introduction ................................................... 1 Installation ................................................... 1 Hardware and Software Requirements ............................. 2 Using GREDA .................................................... 2 General Behavior ............................................... 3 Configuring GREDA .............................................. 4 Screen Layout .................................................. 5 Menu Tree ...................................................... 6 Creating an Image File ......................................... 9 Editing an Image File .......................................... 9 Saving an Image File .......................................... 10 File Buttons .................................................. 10 Menu Buttons .................................................. 10 Color Buttons ................................................. 12 Image Positioning ............................................. 12 Color Palette Editor .......................................... 13 Acknowledgements .............................................. 16 GREDA User's Guide Page: 1 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Introduction 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 GREDA was designed for the development of sprites, backgrounds, and animated sequences using the VGA (video graphics array) 320x200, 256-color mode. The program employs a graphical user interface (GUI) to invoke menu selections. The user will move the mouse cursor to a menu item and click the left button of the mouse to select. Each graphics image or animated sequence is stored in a file on the computer's disk. Animated sequences are stored sequentially in the file as a database. Each image is called a frame, and each frame will use the same height and width as originally defined by the user. These animated sequences and backgrounds may be used later to develop games that use the VGA 256-color mode. GREDA comes with some sample C source code to display and move these images around on the display. The file formats are revealed in that code. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Installation 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 GREDA and its associated files will take up about 1.2Mb on the average hard disk drive (32Mb). This amount may vary according to the particular drive type. To install GREDA, make a directory on your hard disk drive: MD \GREDA 컴� Change to that directory: CD \GREDA 컴� Copy the self-extracting archived file GREDARC.EXE to the directory: COPY A:\GREDARC.EXE 컴� Type the name of that file at the DOS prompt: GREDARC 컴� The self-extracting file will create the following files: GREDA.EXE - Graphics editor and animator. GREDA.CFG - GREDA configuration file. GREDA.PAL - Sample color palette. HELV.008 - Helvetica style font, 8-high. HELV.014 - Helvetica style font, 14-high. HELV.016 - Helvetica style font, 16-high. HELV.019 - Helvetica style font, 19-high. GREDAMAN.TXT - This User's Guide. RODENT.GGF - Greda graphics file of mouse. RODENT.PAL - Greda color palette for RODENT. MACAW.GGF - Macaw converted from PIC. MACAW.PAL - Color palette for MACAW. CHEETAH.GGF - Cheetah converted from PIC. CHEETAH.PAL - Color palette for CHEETAH. TEST2.GGF - Sample hand-drawn screen. GREDA User's Guide Page: 2 TEST2.PAL - Color palette for TEST2. FALL.GGF - Converted from PIC. FALL.PAL - Color palette for FALL. CLOWN.GGF - Clown converted from PIC. CLOWN.PAL - Color palette for CLOWN. PEPSI.GGF - Pepsi can converted from GIF. PEPSI.PAL - Color palette for PEPSI. SAMPLE.EXE - Sample developed with GREDA and associated files. SAMPLE.C - Source code for sample. SAMPLE.LNK - Link response file for sample. VGA.H - Header file for GREDA library (GIDL.LIB). GIDL.LIB - GREDA Image Display (large model) library. SAMPLE.PAL - Color palette for sample. BOY.GGF - Graphics animation file for sample. BOY2.GGF - Graphics animation file for sample. GIRL.GGF - Graphics animation file for sample. GIRL2.GGF - Graphics animation file for sample. STAGE.GGF - Graphics background for sample. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Hardware and Software Requirements 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 GREDA requires version 3.20 or higher version of MS- or PC-DOS, an IBM or compatible computer with a VGA adapter, a Microsoft or compatible 2-button mouse, and 420k of available memory. GREDA works best with a hard disk drive and disk caching, which improves file save/retrieve performance and a computer using VESA bus architecture which greatly improves the video performance. GREDA has been tested on IBM model 50,60,70, and 80, and a Gateway 2000 with 500 Mb hard drive and VESA bus. GREDA was found to work flawlessly using these systems. If the user has any trouble with this software they are encouraged to notify the developer. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Using GREDA 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 To run GREDA, from the DOS prompt change to the directory where the program resides: CD \GREDA 컴켸 Then invoke the program by type the name and pressing the enter key: GREDA 컴켸 GREDA responds to the following command line arguments: /? - Displays information about the program. /S - Skips the program logo. /I - Skips the program logo. /P - Displays the shareware product information. GREDA User's Guide Page: 3 After initializing the mouse driver, GREDA will display the logo screen. After about 20 seconds, the program will display the image editor. GREDA uses selection buttons by which the user will invoke menu selections. To invoke a selection, the user must move the mouse cursor onto the item and click the left button on the mouse. The program will display the button as pressed (shift right and down one pixel) until the user releases the mouse button. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 General Behavior 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 The program has been designed such that certain keyboard and mouse operations will be interpreted in a consistent manner. Following is a list of these behaviors: Mouse: Left Button - Select, place color onto image. Right Button - Cancel or [Esc] from menus. Picks up current color from an image. Restores color in color palette editor. Mouse Cursor - When the mouse cursor is in the image area, the program will display the mouse cursor in some unique and identifiable shape other than the arrow. When the mouse cursor is not in the image area, it will be displayed in the shape of an arrow. Key Strokes: [Esc] - Cancel [Ins] - Toggle insert/overstrike mode [Del] - Delete character at cursor [BkSp] - Delete character left of cursor [Home] - Move cursor to beginning of line [End] - Move cursor to end of line [Ctrl]+[End] - Delete characters from cursor to end of line 컴� - Accept entry [-] - Cursor left [-] - Cursor right [Tab] - Tab right [Shift]+[Tab] - Tab left Text Cursor - When the program is waiting for user data entry, the underline cursor will indicate overstrike typing. The block cursor will indicate insert typing. GREDA User's Guide Page: 4 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Configuring GREDA 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � Horiz Mickeys: 같� � � � � Vert Mickeys: 같� � � � � Speed Threshold: 같� � � � � Default File Ext: 같� � � � � Auto Save? Y/N: � � � � � Auto Palette? Y/N: � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 旼컴컴컴컴컴컴컴컴컴� 쿓oriz Mickeys � 읕컴컴컴컴컴컴컴컴컴� This sets the horizontal relationship between the mouse device movement and the mouse cursor on the display. 旼컴컴컴컴컴컴컴컴컴� 쿣ert Mickeys � 읕컴컴컴컴컴컴컴컴컴� This sets the vertical relationship between the mouse device movement and the mouse cursor on the display. 旼컴컴컴컴컴컴컴컴컴� 쿞peed Threshold � 읕컴컴컴컴컴컴컴컴컴� This defines the point at which the mouse driver initiates double-speed movement of the mouse cursor. 旼컴컴컴컴컴컴컴컴컴� 쿏efault File Ext � 읕컴컴컴컴컴컴컴컴컴� This is the default file extension for graphics image files. The as-shipped default is ".GGF" (Greda Graphics File). 旼컴컴컴컴컴컴컴컴컴� 쿌uto Save? Y/N � 읕컴컴컴컴컴컴컴컴컴� When this option is set to 'Y', the program will automatically save images to disk when changes have been made and the user invokes any function that will reposition the database, loads another file, or quits the application. When this option is set to 'N', the program will prompt the user to save the image to file. GREDA User's Guide Page: 5 旼컴컴컴컴컴컴컴컴컴� 쿌uto Palette? Y/N � 읕컴컴컴컴컴컴컴컴컴� If the user designs a color palette specifically for an image file, the user should name that file by the same name (other than file extension) as the image file (i.e. CHEETAH.GGF and CHEETAH.PAL). If the user sets this configuration option to 'Y', then GREDA will automatically load color palettes with the same filename. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Screen Layout 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Following is textual representation of the GREDA display. Each button has been labeled with a number and is defined in the next "Menu Tree" section. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컫컴컴컴쩡컴컴컫컴컴컴쩡컴컴컴컴컴컴컴커 �1. �2. �3. �4. �5. �6. � 쿑ile: � << � <- � -> � >> � No � 쳐컴컴컫컴컴컴쩡컴컴컴컴컴컴컴좔컴컴컨컴컴컴좔컴컴컨컴컴컴좔컴컴컴컴컴쩡컴캑 �7. �8. � �35. � � ? � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� 쳐컴캑 �9. �10. � 같같같같같같같같같같같같같같같같같같같같같같같같같� �36. � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� �  � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� 쳐컴캑 �11. �12. � 같같같같같같같같같같같같같같같같같같같같같같같같같� �37. � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� � � �13. �14. � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� � � �15. �16. � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� � � �17. �18. � 같같같같같같같같같같같같같같같같같같같같같같같같같� � � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� 쳐컴캑 � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� �38. � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� � � �19. �20. � 같같같같같같같같같같같같같같같같같같같같같같같같같� �  � � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� 쳐컴캑 � � � 같같같같같같같같같같같같같같같같같같같같같같같같같� �39. � 쳐컴컴컵컴컴컴� 같같같같같같같같같같같같같같같같같같같같같같같같같� � � �21. �22. � � � � � 쳐컴컴컴쩡컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컫컴좔컴캑 � � �30. << �31. <- �32. �33. -> �34. >> � 쳐컴컴컵컴컴컴탠컴컴컴탠컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컵컴컴컴캑 �23. �24. �25. <- �27. �28. -> � � S � C 쳐컴컴컴� 굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇굇 쳐컴컴컴� � � �26. << � �29. >> � 읕컴컴컨컴컴컴좔컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴켸 GREDA User's Guide Page: 6 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Menu Tree 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Following is the image editor menu tree. Each menu item begins with the number associated with its position on the display in the previous "Screen Layout" section. Like items are grouped into sections and labeled by the boxed titles: 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿑ile Buttons � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 1 - File Open/Create 2 - First Image Record 3 - Previous Image Record 4 - Next Image Record 5 - Last Image Record 6 - Current Image Record Number 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘enu Buttons � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 7 - Help 8 - Record Retrieve Current Record Save Current Record Insert Before Record Delete Current Record 9 - Pen Height Width 10 - Text 8, 14, 16, or 19 Pixel High Font Normal Text Color Phase Increase Color Phase Decrease Text With Shadow Color Phase Increase & Shadow Color Phase Decrease & Shadow 11 - Shapes Line Draw Rectangle Outline Fill Color Phase Brownian Horizontal Brownian Vertical Ellipse Outline Fill Color Phase Center->Out Color Phase Border->In Starburst GREDA User's Guide Page: 7 Polygon Outline Fill Color Phase Center->Out Color Phase Border->In 12 - Spray Height Width DPS 13 - Color Palette Edit Palette Trend Start Trend Stop Generate Trend Restore Colors Keep Cancel Save Palette Load Palette 14 - Region Fill Fill With Color Fill With Copy Buffer Fill With Scheme Step & Repeat Copy Buffer Step & Repeat Scheme Buffer Load Scheme Buffer From File Release Scheme Buffer Memory 15 - Size, Rotation, Flip Resize Auto Minimize Flip Vertically Flip Horizontally Rotate Left Rotate Right 16 - Move Image Area Up Down Left Right Keep Abandon 17 - Magnification Normal Size Double Size Quadruple Size 18 - Tools Configure GREDA Horiz Mickeys Vert Mickeys Speed Threshold Default File Ext Auto Save? Y/N Auto Palette? Y/N Available Memory Search & Replace Color Fill Image With Color Erase Image Frame GREDA User's Guide Page: 8 Export Functions Data File Mouse Pointer File Color Palette File Release Copy Buffer Release Scheme Buffer 19 - Replay Repeat FPS Method (L, B, S) 20 - Block Menu Block Functions Copy Erase Fill Move Color Phase Increase Left->Right Increase Right->Left Increase Top->Bottom Increase Bottom->Top Search & Replace Extract to Scheme File Extract to Image File Horizontal Random Shift Vertical Random Shift Replace Area With Copy Buffer OR Area With Copy Buffer AND Area With Copy Buffer Load Copy Buffer From File Release Copy Buffer Memory 21 - View Load Screen Image Erase Screen Image View Current Frame 22 - Exit Yes/No 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎olor Buttons � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 23 - Search Color 24 - Current Color 25 - Previous 8 colors 26 - First 56 Colors 27 - 56 of 256 Available Colors 28 - Next 8 Colors 29 - Last 56 Colors 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿔mage Buttons Horizontal � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� These buttons will appear only when an image is loaded and the image width is greater than 272. If the image height > 152, then these buttons will appear when the image width is greater than 262. GREDA User's Guide Page: 9 30 - Display Left Most Part of Image 31 - Shift Image Left 8 Pixels 32 - Nothing 33 - Shift Image Right 8 Pixels 34 - Display Right Most Part of Image 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿔mage Buttons Vertical � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� These buttons will appear only when an image is loaded and the image height is greater than 152. If the image width is greater than 272, then these buttons will appear when the image height is greater 142. 35 - Display Top Most Part of Image 36 - Shift Image Up 8 Pixels 37 - Nothing 38 - Shift Image Down 8 Pixels 39 - Display Bottom Most Part of Image 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Creating an Image File 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 To create a new graphics image, the user must first click the left mouse button on the FILE selection button (1). The program will display the button pressed until the user releases the mouse button. A cursor will appear in the file button window and the user should enter the name of the file. A file extension will be appended if the user does not enter one and the configuration specifies a default one. While entering data into these fields, the user may abandon by either pressing the escape key ([Esc]) or pressing the right button on the mouse. After entering the new filename, GREDA will try to find one on the disk. If the file does not exist, the program will request approval to create the new file. After answering 'Y', the user will be prompted to define the height and width of the image. The maximum height of any image is 200 and the maximum width is 320. Images cannot be defined as smaller than 1 in height or width. After entering this information, GREDA will create the new file with a blank image and set the record counter to 1. The user may select a drawing device and begin painting the image. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Editing an Image File 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 To edit an existing graphics image, the user must first click the left mouse button on the FILE selection button (1). The program will display the button pressed until the user releases the mouse button. A cursor will appear in the file button window and the user should enter the name of the file. A file extension will be appended if the user does not enter one and the configuration specifies a default one. GREDA User's Guide Page: 10 The user may enter a DOS wild-card specification (i.e. *.GGF) and press the enter key. GREDA will display the list of files that were found to meet that specification. The user may select from that list by moving the mouse cursor to the row of the file name and clicking the left button on the mouse. If the file exists, the program will open the file, display the first frame, and set the record counter to 1. The user may select a drawing device and begin editing the image. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Saving an Image File 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 To save the image to file, the user can move the mouse cursor to the record menu item (8) and click the left mouse button. The program will display a menu of choices. Click on the item labeled "Save Current Record". The program will write the image to disk. If the user has made changes to the current image and clicks on any of the file buttons (1 through 5), GREDA will save the current record to disk automatically if the user has specified "Auto Save = Y" in the configuration. Otherwise, the program will prompt the user to save this record to disk. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 File Buttons 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 There are six buttons that are related to file and record position. These buttons are laid out at the top of the display: 1 - File Open/Create Designate a file name for editing or create a new file. 2 - First Image Record Move the record pointer to the first image in the file. 3 - Previous Image Record Move the record pointer to the image previous to one currently displayed. 4 - Next Image Record Move the record pointer to the image after the one currently displayed. 5 - Last Image Record Move the record pointer to the last image in the file. 6 - Current Image Record Number Display the current image number only. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Menu Buttons 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 The menu buttons are located on the left side of the display and are distributed 2 across and 8 vertically. The menu buttons do not include the search and current color buttons (23 and 24). GREDA User's Guide Page: 11 7 - Help Display information about each menu button. 8 - Record Record retrieve, save, insert, and delete. 9 - Pen Selects the pen drawing device. If the pen is current, the program receives input to define the height and width of the drawing point. 10 - Text Text entry onto image. The user may choose one of 4 different font heights and options for shadow and color phase. 11 - Shapes Line draw, ellipse, rectangle, and polygons can be generated with a variety of options such as color phase, fill, and starburst (ellipses only). The rectangle drawing function can generate a Brownian vertical or horizontal motion. This is commonly used in generating fractal landscapes. 12 - Spray Select the spray drawing device. Spray is generated using random numbers and the current paint color. If the spray is the current drawing device, the program receives input defining the height, width, and spray rate. 13 - Color Palette Color palette editor, allows the user to change 239 of the 256 colors available. 14 - Region Fill Fills areas of the current image with color, step and repeat, and schemes. 15 - Size, Rotation, Flip Resize, rotate, or flip the image frame vertically or horizontally. 16 - Move Image Area Shift the image area up, down, left, or right. 17 - Magnification Set the editing size to 1, 2, or 4 times the actual image size. 18 - Tools Various tools and utilities for GREDA configuration, erasing and filling the image frame, releasing buffers, and functions to export the image and color palette data to C source code. 19 - Replay Use this function to view an animated sequence. GREDA User's Guide Page: 12 20 - Block Menu Functions for block and copy, erase, fill, generate color phase, extract copy buffer to file. 21 - View View the current image frame at 1:1 with the option of moving around in front of a chosen background. 22 - Exit Quit GREDA and exit to DOS. The program warns the user of any changes made to the image and color palette and allows the user to save them to file. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Color Buttons 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 The color buttons are located across the bottom the display. The program displays the available colors on the color bar (27). The user may select a color from the color bar or may pick a color from the current image by pressing the right mouse button. 23 - Search Color The color to search for in any search and replace operation. 24 - Current Color The current paint color. If the user clicks on this button, the program redisplays the color bar (27) at the same offset that the color was selected. 25 - Previous 8 colors Shifts the color bar eight colors to the left. 26 - First 56 Colors Displays the color bar beginning with the first 56 colors. 27 - 56 of 256 Available Colors The color bar displays 56 of the 256 colors. The user can select a color by moving the mouse cursor to a displayed color and click the left mouse button. 28 - Next 8 Colors Shifts the color bar eight colors to the right. 29 - Last 56 Colors Displays the color bar beginning with the last 56 colors. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Image Positioning 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 If the frame size at the current magnification exceeds the size of the image area, GREDA will display image positioning buttons as needed for the vertical and horizontal. Double arrows indicate positioning at the beginning or end, and single arrows indicate shifting the image by eight pixels in that direction. GREDA User's Guide Page: 13 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Color Palette Editor 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 To edit the current color palette, move the mouse cursor to the menu button with the picture of a painter's palette (button number 13) and click the left mouse button. The program will display the color palette editor. Upon entering the editor the current selected color (2) will be the same as the current paint color that was selected while in the image editor (button number 24). Color numbers 1 - 16 and 256 are reserved and cannot be changed by the user. 旼컫컴쩡컫컴쩡컫컴쩡컫컴쩡컫컴쩡컫컴쩡컫컴쩡컫컴왯컴컴컴컴컴컴컴컴컴컴컴컴� �1.� � � � � � � � � � � � � � � 납3. � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 � � � � � � � � � � � � � � � � � 납 � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 Blu � � � � � � � � � � � � � � � � � 납 � 쳐케袴뼛컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 Red 께께께 � � �2.� � � � � � � � � � � � � � 납 께께께 � 쳐컹袴셍컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 같같같 Grn 께께께 � � � � � � � � � � � � � � � � � 납 같같같 께께께 � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 같같같 굇굇굇 께께께 � � � � � � � � � � � � � � � � � 납 같같같 굇굇굇 께께께 � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴늘컴컴컴컴컴컴컴컴컴컴컴컴� � � � � � � � � � � � � � � � � 납4.굇굇굇굇굇굇굇굇굇굇� � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 굇굇굇굇굇굇굇굇굇굇굇 � � � � � � � � � � � � � � � � � 납 굇굇굇굇굇굇굇굇굇굇굇 � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴느컴컴컴컴컴컴컴컴컴컴컴컴� � � � � � � � � � � � � � � � � 넬컴컴컴컴컴컴컴컴컴컴컴컴� 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴5. � � � � � � � � � � � � � � � � � 납 Trend Start: � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴늘컴컴컴컴컴컴컴컴컴컴컴컴� � � � � � � � � � � � � � � � � 납6. � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 Trend Stop: � � � � � � � � � � � � � � � � � 냉컴컴컴컴컴컴컴컴컴컴컴컴� 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴7. � � � � � � � � � � � � � � � � � 납 Generate Trend � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴늘컴컴컴컴컴컴컴컴컴컴컴컴� � � � � � � � � � � � � � � � � 납8. � 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴 Restore Colors � � � � � � � � � � � � � � � � � 냉컴컴컴컴컴컴쩡컴컴컴컴컴� 쳐컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴탠컵컴눴9. �10. � � � � � � � � � � � � � � � � � 납 Keep � Cancel � 읕컨컴좔컨컴좔컨컴좔컨컴좔컨컴좔컨컴좔컨컴좔컨컴牡컴컴컴컴컴컴좔컴컴컴컴컴� 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� �11. � � Color No: Red: Green: Blue: � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� GREDA User's Guide Page: 14 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎olor Palette � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 1 - 256 Colors (1 - 16 and 256 are reserved) 2 - Current Selected Color 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿝GB Values � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 3 - Bar Chart Color Values 4 - Current Color Patch 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿘enu Buttons � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 5 - Trend Start 6 - Trend Stop 7 - Generate Trend 8 - Restore Colors 9 - Keep 10 - Cancel 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎olor Value Status � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� 11 - Current Color Status Color No Red Green Blue 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿐diting Colors � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� You can edit a single color at a time or generate a color "trend". To edit a single color, move the mouse cursor to the color you want to edit and press the left mouse button. The program will move the highlight box (2) to the color. The values of red, green, and blue will be displayed in the value box (3), a patch of that color will be displayed in 4, and 11 will display the color number and the actual values for red, green, and blue (RGB). To change the RGB values, move the mouse cursor into the value box (3) to the color bar (red, green, or blue) that you want to change. Click the left mouse button to adjust the amount of each RGB value. While holding the left mouse button down, the user can move the mouse vertically to adjust the RGB values. The new color will be displayed in the color patch (4), in the currently selected color box (2), and the values displayed in the status box (11). GREDA User's Guide Page: 15 To restore a single color to the same RGB values as assigned before entering the palette editor, move the mouse cursor to that color and click the right mouse button. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿒enerating a Color Trend � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� Color trends are several colors in sequence that display a smooth range of color values such as black to blue. The starting color (black) will contain zero amounts of RGB values. Each color in sequence will use a slightly higher percentage of blue until it reaches the target (Trend Stop) value. Move the mouse cursor to a color and press the left mouse button. GREDA will make that the current color. Then move the mouse cursor to the "Trend Start" menu item and click the left mouse button. The program will display the color number on the menu. You may edit the RGB values of this color to your taste. Now move the mouse cursor the color that you want to designate as the last color in the sequence and press the left mouse button. GREDA will make this the current color. Now move the mouse cursor to the "Trend Stop" menu item and click the left mouse button. The program will display the color number on the menu. You may edit the RGB values. Now move the mouse cursor to the "Generate Trend" menu item and click the mouse left button. GREDA will change the RGB values of each color to generate a smooth change from the start to stop values. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿝estore Colors � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� At any time, the user may restore the color palette to the values before entering the palette editor by clicking on the "Restore Colors" button. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿖eep Colors � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� When the colors are acceptable, move the mouse cursor to the "Keep" menu item and click the left mouse button. The program will keep those colors as the current color palette. The user may edit these colors again and again. To save these colors in a palette file, from the main menu click on the color palette menu item (see Screen Layout, button number 13). Then select "Save Palette" from the menu. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴� 쿎ancel Colors � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴� If the changes you have made are unacceptable and you want to return to the image editor, move the mouse cursor to the "Cancel" menu item and click the left mouse button. The colors will be restored to the values prior to entering the palette editor and the program will return to the image editor. GREDA User's Guide Page: 16 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Acknowledgements 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 IBM is trademark of International Business Machines Gateway is a trademark of Gateway Corporation ATT is a trademark of American Telephone and Telegraph Corporation PC-DOS is copyrighted software from IBM MS-DOS is copyrighted software from Microsoft Corporation PaintBrush is copyrighted software from Microsoft Corporation Windows is copyrighted software from Microsoft Corporation 256Paint is copyrighted software from Pod Bay Enterprises