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

calibre 2.17 - Complete e-library manage...
Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital librarian... Read more
OmniGraffle Pro 6.1.2 - Create diagrams,...
OmniGraffle Pro helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use... Read more
OmniGraffle 6.1.2 - Create diagrams, flo...
OmniGraffle helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use Graffle to... Read more
RoboForm 2.0.2 - Password manager; syncs...
RoboForm is a password manager that offers one-click login, mobile syncing, easy form filling, and reliable security. Password Manager. RoboForm remembers your passwords so you don't have to! Just... Read more
Apple MainStage 3.1 - Live performance t...
Love the sound you got on your recording? MainStage 3 makes it easy to bring all the same instruments and effects to the stage. Everything from the Sound Library and Smart Controls you're familiar... Read more
Freeway Pro 7.0.2 - Drag-and-drop Web de...
Freeway Pro lets you build websites with speed and precision... without writing a line of code! With its user-oriented drag-and-drop interface, Freeway Pro helps you piece together the website of... Read more
A Better Finder Rename 9.44 - File, phot...
A Better Finder Rename is the most complete renaming solution available on the market today. That's why, since 1996, tens of thousands of hobbyists, professionals and businesses depend on A Better... Read more
Stacks 2.6.9 - New way to create pages i...
Stacks is a new way to create pages in RapidWeaver. It's a plugin designed to combine drag-and-drop simplicity with the power of fluid layout. Features: Fluid Layout: Stacks lets you build pages... Read more
Sid Meier's Civilization: Beyond Ea...
Sid Meier's Civilization: Beyond Earth is a new science-fiction-themed entry into the award-winning Civilization series. Set in the future, global events have destabilized the world leading to a... Read more
Logic Pro X 10.1 - Music creation and au...
Apple Logic Pro X is the most advanced version of Logic ever. Sophisticated new tools for professional songwriting, editing, and mixing are built around a modern interface that's designed to get... Read more

Choice Provisions is Set to Launch Destr...
Choice Provisions is Set to Launch Destructamundo on iOS This Month Posted by Tre Lawrence on January 23rd, 2015 [ permalink ] Choice Provisions – home stable to | Read more »
King of Thieves – An Interview With Zept...
Ahead of the release of ZeptoLab’s King of Thieves, we were able to ask ZeptoLab’s co-founder, Semyon Voinov, a few questions about the inspiration behind the game and what that means for the Cut the Rope franchise. | Read more »
Handle Review
Handle Review By Jennifer Allen on January 23rd, 2015 Our Rating: :: SPEEDY ORGANIZINGUniversal App - Designed for iPhone and iPad Handle is a very convenient way of juggling your emails, To Do list, and Calendar all through one... | Read more »
The New Disney Inquizitive App Offers a...
The New Disney Inquizitive App Offers a Place for Fans to Take Disney Quizzes Posted by Tre Lawrence on January 23rd, 2015 [ permalink ] | Read more »
Hands-On With Cut the Rope Developer Zep...
Marking quite a departure from ZeptoLab’s past successes, namely the Cut The Rope series, King of Thieves is shaping up to be quite promising. Due for release in February, we were lucky enough to have some time with a preview build to see exactly... | Read more »
Fast Fishing Review
Fast Fishing Review By Jennifer Allen on January 23rd, 2015 Our Rating: :: LIVES UP TO ITS NAMEUniversal App - Designed for iPhone and iPad Fishing is far from relaxing in Fast Fishing, but it is fun.   | Read more »
The LEGO Movie Video Game is Available N...
The LEGO Movie Video Game is Available Now for iOS Posted by Ellis Spice on January 23rd, 2015 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Satellina Review
Satellina Review By Jennifer Allen on January 23rd, 2015 Our Rating: :: TWITCHY BUT TACTICALUniversal App - Designed for iPhone and iPad Satellina requires quick thinking and twitchy fingers, and it’s pretty fun.   | Read more »
Tail Drift, the Crazy 360 Degree Flyer,...
Tail Drift, the Crazy 360 Degree Flyer, Has Gone Free-to-Play in a New Update Posted by Jessica Fisher on January 22nd, 2015 [ permalink ] | Read more »
PureSkate 2 Review
PureSkate 2 Review By Tre Lawrence on January 22nd, 2015 Our Rating: :: ALMOST ALL AIRUniversal App - Designed for iPhone and iPad PureSkate 2 lets one’s fingers do the skateboarding.   | Read more »

Price Scanner via MacPrices.net

College Student Deals are back, additional $5...
Take an additional $50 off all MacBooks and iMacs at Best Buy Online with their College Students Deals Savings, valid through April 11, 2015. Anyone with a valid .EDU email address can take advantage... Read more
iPhone 6 and 6 Plus GIve Apple Half Of US Mob...
Chicago-based Consumer Intelligence Research Partners, LLC (CIRP) have released analysis of the results of its research on mobile phone manufacturers for the calendar quarter that ended December 31,... Read more
Save $100 on MacBook Airs with 256GB of stora...
B&H Photo has 256GB MacBook Airs on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 11″ 1.4GHz/256GB MacBook Air: $999 $100 off MSRP - 13″ 1.4GHz/256GB MacBook... Read more
21-inch 2.7GHz iMac on sale for $1179, save $...
B&H Photo has the 21″ 2.7GHz iMac on sale for $1179 including free shipping plus NY sales tax only. Their price is $120 off MSRP, and it’s the lowest price available for this model from any... Read more
iPhone Usage Rates by State Correlate With Ed...
Chitika Insights notes that despite iPhones being the largest source of smartphone Internet traffic in North America, their latest study finds a relatively high degree of variation of iPhone usage... Read more
ProGearX Extendable Pole “Pov/Selfie Stick” M...
There’s something inescapably narcissistic about the concept of selfies as they’ve developed as a smartphone-driven social (particularly social media) phenomenon that rubs me the wrong way. However,... Read more
iPad Air 2 on sale for up to $100 off MSRP, 2...
 Best Buy has iPad Air 2s on sale for up to $100 off MSRP on their online store for the next two days. Choose free shipping or free local store pickup (if available). Sale prices available for online... Read more
Roundup of Apple refurbished MacBook Pros and...
The Apple Store has Apple Certified Refurbished 2014 MacBook Pros and MacBook Airs available for up to $400 off the cost of new models. An Apple one-year warranty is included with each model, and... Read more
Sale! 13-inch 2.8GHz Retina MacBook Pro for $...
 B&H Photo has the 13″ 2.8GHz Retina MacBook Pro on sale for $1599 including free shipping plus NY sales tax only. Their price is $200 off MSRP, and it’s the lowest price available for this model... Read more
Next OS X/iOS Version Upgrades Should Concent...
On stage at Apple’s World Wide Developers’ Conference in June 2009, Bertrand Serlet, the company’s Senior Vice President of Software Engineering at the time, announced that the forthcoming OS X... Read more

Jobs Board

Business Development Manager - *Apple* Pay...
**Job Summary** Apple Pay is seeking an experienced business development manager to support the identification, recruitment, negotiation and ongoing management of Read more
*Apple* Solutions Consultant (ASC)- Retail S...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
*Apple* Solutions Consultant - Retail Sales...
**Job Summary** As an Apple Solutions Consultant (ASC) you are the link between our customers and our products. Your role is to drive the Apple business in a retail Read more
*Apple* Lead Operator, GSOC - Apple (United...
**Job Summary** Apple is seeking an exceptional, customer service oriented and experienced persons to fulfill the role of Apple Lead Operator (ALO) as part of the Read more
Order Support Supervisor- *Apple* Online Sto...
**Job Summary** The Apple Online Store (AOS) Order Administration team is looking for an Order Support Supervisor to manage and lead a team of Specialists through the Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.