TweetFollow Us on Twitter

Oct 94 Tips
Volume Number:10
Issue Number:10
Column Tag:Tips &Tidbits

Related Info: Color Quickdraw

Tips &Tidbits

By Scott T Boyd, Editor

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

Tip Of The Month

Faster Color

RGBForeColor and RGBBackColor can take a surprising amount of time, especially if your main drawing loop calls both routines before most drawing operations. Even if you call RGBForeColor with the color that’s currently foremost, it still recalculates the best possible foreground color! By remembering the results of RGBForeColor and RGBBackColor, you can significantly increase your drawing speed; this example program shows a drawing speed increase of 20%!

The program is written to be pasted into a brand new Think C Project; no MacTraps library is required here. It dumps you into MacsBug at the end with location $40 holding the unoptimized time and $44 holding the optimized time. You can use locations $40 through $5B, inclusive, for debugging purposes.


/* 1 */
#include <QuickDraw.h>
#include <Windows.h>
#include <Palettes.h>
#include <Events.h>

void main(void) {
    CWindowRecord   cwr;
    WindowPtr       wp;
    Rect            bounds = {100, 50, 100 + 256, 50 + 100};
    RGBColor        theColor;
    unsigned short  i, lp;
    unsigned short  start, stop, inc;
    long            startT, stopT;
    long            ColorIndex[1000];
    short           optimized;

    InitGraf( NewPtr(2000) + 1000);
    InitCursor();
    InitFonts();
    InitWindows();
    InitMenus();
    TEInit();
    InitDialogs(0);

    wp = NewCWindow(&cwr,&bounds,"\pFill",TRUE,zoomDocProc,0,TRUE,237);
    SetPort(wp);
    OffsetRect(&bounds, -bounds.left, -bounds.top);

    for (optimized = 0; optimized <= 1; optimized++) {
        startT = TickCount();
    
        if (optimized) {
            for (i = 0; i < 256 * 255; i += 256) {
                theColor.red = i;
                theColor.green = i;
                theColor.blue = i;
                RGBForeColor(&theColor);
                ColorIndex[i >> 8] = cwr.port.fgColor;
            }
        } 
        PenPat((Pattern *)"\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0");
        for (lp = 0; lp < 99; lp++) {
            MoveTo(0, 0);
            if (lp & 1) {
                start = 0;
                inc = 256;
                stop = 256 * 255;
            } else {
                stop = 0;
                start = 256 * 255;
                inc = -256;
            }
            for (i = start; i != stop; i += inc) {
                if (!optimized) {
                    theColor.red = theColor.green 
 = theColor.blue 
 = i;
                    RGBForeColor(&theColor);
                    theColor.red   = theColor.green 
 = theColor.blue 
 = 65536 - 256 - i;
                    RGBBackColor(&theColor);
                } else {
                    cwr.port.rgbFgColor.red 
 = cwr.port.rgbFgColor.green 
 = cwr.port.rgbFgColor.blue 
 = i;
                    cwr.port.fgColor =
                        ColorIndex[cwr.port.rgbFgColor.red >> 8];
                    cwr.port.rgbBkColor.red 
 = cwr.port.rgbBkColor.green 
 = cwr.port.rgbBkColor.blue 
 = 65536 - 256 - i;
                    cwr.port.bkColor =
                        ColorIndex[cwr.port.rgbBkColor.red >> 8];
                }
                Line(100, 0);
                Move(-100, 1);
            }
        }
        stopT = TickCount();
        if (!optimized) {
            *(long *)0x40 = stopT - startT;
        } else {
            *(long *)0x44 = stopT - startT;
        }
    }
    DebugStr("\p;dm 40");
    CloseWindow(wp);
}

- Jörg ‘jbx’ Brown

San Francisco, CA

Got a developer tip you’ve been keeping to yourself but really need to share? Think you have a better trick up your sleeve? Send us your tips and tricks, especially programming-related tips, but don’t hold back if you’ve got programmer’s user tips.

We want your tips! We pay $25 for every tip used, and $50 for Tip of the Month. You can take your award in orders or subscriptions if you prefer.

Make sure code compiles, and send tips by e-mail. See page two for our addresses.

Not Such A Drag After All

The drag manager is really cool and can make apps a lot more intuitive, but it’s a pain to debug since process switches are disabled while drags occur. Since both Think C’s and Metrowerks’ debugger require these, you cannot use them. Never fear! You can use The Debugger!

While we’re on the subject, here’s a gotcha for you. Watch out for a bug that causes deadlock if you call WaitNextevent from a drag receive handler.

- Rod Magnuson,

Cupertino, CA

Going Faster with Symantec TPM

Symantec C++, both versions 6.0 and 7.0, do not have the compilers as part of Think Project Manager. Instead, they are kept as quasi-standalone applications inside the Translators folder (located in the Symantec C++ folder). This goes for the C, C++, and rez compilers, as well as the .o converter. When the user tells Think Project Manager to compile a file, TPM looks at the file’s extension (such as .cp for a C++ file), and launches the appropriate compiler (or translator, as Symantec calls them). This is documented in the Symantec manuals.

What isn’t documented, however, is the process by which TPM launches the translators. As it is shipped from the factory, when TPM is launched, it turns around and launches the C++ translator and keeps it in memory. The C translator is left on the disk, and called when necessary. This works great if you do most of your work in C++. But if you’re like me, and work mostly in C, this slows down the compilation process because every time a C file is to be compiled, the C translator must launched and loaded into memory, while the C++ translator sits there in memory with nothing to do.

What’s a C user to do? Simply modify the C and C++ translators to work the way you want them to. Using ResEdit (or resource editor of your choice), open ‘INFO’ resource number 0 in the translator named Think C (Symantec graciously includes a ResEdit template for this). Change the setting of Memory Resident Translator? from 0 to 1. Close and save your changes. Voila! The C translator will now be loaded and kept in memory by TPM when it is launched. In one simple step, C compiles are now speeded up. The more files that are being compiled, the greater the speed increase. For instance, a one-file compile is not speeded up much, but if you’re working with large projects, the speed increase can be significant.

If you want to free up some memory, you can also modify the C++ translator (named Symantec C++) to not be memory resident.

- Chris Hawk

San Francisco, CA

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Backup and Sync 3.46 - File backup and s...
Backup and Sync (was Google Drive) is a place where you can create, share, collaborate, and keep all of your stuff. Whether you're working with a friend on a joint research project, planning a... Read more
iClock 5.5 - Customizable menu bar clock...
iClock replaces the old Apple's default menu bar clock with more features, customization and increases your productivity. Features: Have your Apple or Google calendar instantly available from the... Read more
Garmin Express 6.18.0.0 - Manage your Ga...
Garmin Express is your essential tool for managing your Garmin devices. Update maps, golf courses and device software. You can even register your device. Update maps Update software Register your... Read more
MarsEdit 4.3.5 - Quick and convenient bl...
MarsEdit is a blog editor for OS X that makes editing your blog like writing email, with spell-checking, drafts, multiple windows, and even AppleScript support. It works with with most blog services... Read more
Xcode 11.0 - Integrated development envi...
Xcode includes everything developers need to create great applications for Mac, iPhone, iPad, and Apple Watch. Xcode provides developers a unified workflow for user interface design, coding, testing... Read more
DaisyDisk 4.8 - $9.99
DaisyDisk allows you to visualize your disk usage and free up disk space by quickly finding and deleting big unused files. The program scans your disk and displays its content as a sector diagram... Read more
VMware Fusion 11.5.0 - Run Windows apps...
VMware Fusion and Fusion Pro - virtualization software for running Windows, Linux, and other systems on a Mac without rebooting. The latest version includes full support for Windows 10, macOS Mojave... Read more
Apple Configurator 2.10 - Configure and...
Apple Configurator makes it easy to deploy iPad, iPhone, iPod touch, and Apple TV devices in your school or business. Use Apple Configurator to quickly configure large numbers of devices connected to... Read more
Spotify 1.1.15.448. - Stream music, crea...
Spotify is a streaming music service that gives you on-demand access to millions of songs. Whether you like driving rock, silky R&B, or grandiose classical music, Spotify's massive catalogue puts... Read more
MenuMeters 1.9.8 - CPU, memory, disk, an...
MenuMeters is a set of CPU, memory, disk, and network monitoring tools for Mac OS X. Although there are numerous other programs which do the same thing, none had quite the feature set I was looking... Read more

Latest Forum Discussions

See All

Marvel Strike Force is adding Agent Coul...
Marvel Strike Force, the popular squad-based RPG, is set to receive a bunch of new content over the next few weeks. [Read more] | Read more »
Lots of premium games are going free (so...
You may have seen over the past couple weeks a that a bunch of premium games have suddenly become free. This isn’t a mistake, nor is it some last hurrah before Apple Arcade hits, and it’s important to know that these games aren’t actually becoming... | Read more »
Yoozoo Games launches Saint Seiya Awaken...
If you’re into your anime, you’ve probably seen or heard of Saint Seiya. Based on a shonen manga by Masami Kurumada, the series was massively popular in the 1980s – especially in its native Japan. Since then, it’s grown into a franchise of all... | Read more »
Five Nights at Freddy's AR: Special...
Five Nights at Freddy's AR: Special Delivery is a terrifying new nightmare from developer Illumix. Last week, FNAF fans were sent into a frenzy by a short teaser for what we now know to be Special Delivery. Those in the comments were quick to... | Read more »
Rush Rally 3's new live events are...
Last week, Rush Rally 3 got updated with live events, and it’s one of the best things to happen to racing games on mobile. Prior to this update, the game already had multiplayer, but live events are more convenient in the sense that it’s somewhat... | Read more »
Why your free-to-play racer sucks
It’s been this way for a while now, but playing Hot Wheels Infinite Loop really highlights a big issue with free-to-play mobile racing games: They suck. It doesn’t matter if you’re trying going for realism, cart racing, or arcade nonsense, they’re... | Read more »
Steam Link Spotlight - The Banner Saga 3
Steam Link Spotlight is a new feature where we take a look at PC games that play exceptionally well using the Steam Link app. Our last entry talked about Terry Cavanaugh’s incredible Dicey Dungeons. Read about how it’s a great mobile experience... | Read more »
Combo Quest (Games)
Combo Quest 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: Combo Quest is an epic, time tap role-playing adventure. In this unique masterpiece, you are a knight on a heroic quest to retrieve... | Read more »
Hero Emblems (Games)
Hero Emblems 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: ** 25% OFF for a limited time to celebrate the release ** ** Note for iPhone 6 user: If it doesn't run fullscreen on your device... | Read more »
Puzzle Blitz (Games)
Puzzle Blitz 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Puzzle Blitz is a frantic puzzle solving race against the clock! Solve as many puzzles as you can, before time runs out! You have... | Read more »

Price Scanner via MacPrices.net

11″ WiFi iPad Pros on sale today for up to $2...
Amazon has new 2018 Apple 11″ WiFi iPad Pros in stock today and on sale for up to $200 off Apple’s MSRP. These are the same iPad Pros sold by Apple in its retail and online stores. Be sure to select... Read more
Select 12″ iPad Pros on sale for $200 off App...
Amazon has select 2018 Apple 12″ iPad Pros in stock today and on sale for $200 off Apple’s MSRP. These are the same iPad Pros sold by Apple in its retail and online stores. Be sure to select Amazon... Read more
Get one of Apple’s new 2019 iPhone 11 models...
Boost Mobile is offering the new 2019 Apple iPhone 11, iPhone 11 Pro, and 11 Pro Max for $100 off MSRP. Their discount reduces the cost of an iPhone 11 to $599 for the 64GB models, $899 for the 64GB... Read more
13″ 1.4GHz Silver MacBook Pros on sale for $1...
B&H Photo has new 2019 13″ 1.4GHz 4-Core Touch Bar Silver MacBook Pros on sale for $100 off Apple’s MSRP. Overnight shipping is free to many addresses in the US. These are the same MacBook Pros... Read more
4-core and 6-core 2018 Mac minis available at...
Apple has Certified Refurbished 2018 Mac minis available on their online store for $120-$170 off the cost of new models. Each mini comes with a new outer case plus a standard Apple one-year warranty... Read more
$250 prepaid Visa card with any Apple iPhone,...
Xfinity Mobile will include a free $250 prepaid Visa card with the purchase of any new iPhone, new line activation, and transfer of phone number to Xfinity Mobile. Offer is valid through October 27,... Read more
Sprint is offering the 64GB Apple iPhone 11 P...
Sprint has the new 64GB iPhone 11 Pro available for $12.50 per month for new customers with an eligible trade-in in of iPhone 7 or newer. That’s down from their standard monthly lease of $41.67. The... Read more
Final week: Apple’s 2019 Back to School Promo...
Purchase a new Mac using Apple’s Education discount, and take up to $400 off MSRP. All teachers, students, and staff of any educational institution with a .edu email address qualify for the discount... Read more
Save $30 on Apple’s AirPods at these reseller...
Amazon is offering discounts on new 2019 Apple AirPods ranging up to $30 off MSRP as part of their Labor Day sale. Shipping is free: – AirPods with Charging Case: $144.95 $15 off MSRP – AirPods with... Read more
Preorder your Apple Watch Series 5 today at A...
Amazon has Apple Watch Series 5 GPS models available for preorder and on sale today for $15 off Apple’s MSRP. Shipping is free and starts on September 20th: – 40mm Apple Watch Series 5 GPS: $384.99 $... Read more

Jobs Board

Systems Analyst ( *Apple* & Android) (Jo...
Systems Analyst ( Apple & Android) (Job ID: 572513) + 11751 Meadowville Ln, Chester, VA 23836, USA + Full-time Company Description Computer Consultants International, Read more
*Apple* Mobile App Developer - eiWorkflow So...
…eiWorkflow Solutions, LLC is currently looking for a consultant for the following role. Apple Mobile App Developer Tasks the role will be performing: ? Mobile App Read more
Essbase Developer - *Apple* - Theorem, LLC...
Job Summary Apple is seeking an experienced, detail-minded Essbase developer to join our worldwide business development and strategy team. If you are someone who Read more
Student Employment (Blue *Apple* Cafe) Spri...
Student Employment (Blue Apple Cafe) Spring 2019 Penn State University Campus/Location: Penn State Brandywine Campus City: Media, PA Date Announced: 12/20/2018 Date Read more
Best Buy *Apple* Computing Master - Best Bu...
**732093BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Store Associates **Location Number:** 001441-Beaumont-Store **Job Description:** The Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.