Help with image effect
I want a nice, simple (?) visual effect: I have two images (which may be different sizes), and I want to swap them over (such that each one stretches or shrinks to occupy the space previously taken up by the other one). I thought this would be simple ... loop some number of times, adjusting the "rect" of each image - then find a suitable "wait" value to slow it down. In fact, it is unbearably slow - even for medium sized images (320*240 swapping with a 320*480) each step is clearly visible. For 2 images of 160*120 it's almost a smooth animation - I'm not sure if it's just that they are smaller sizes, or if it's the fact that the sizes remain the same. (all on medium laptop - Pentium P4 2.8G with low-end ATI graphics) It does look OK on a top of the range Pentium laptop with ATI92xx graphics (my wife needs high-end hardware to play Sims :-), but that's not exactly typical hardware yet. Is there some other way I should be approaching this ? on imageSwap pImg1, pImg2, pNumber local r1, r2 local dtlx, dtly, dbrx, dbry if paramCount() < 3 then put 20 into pNumber end if put the rect of img pImg1 into r1 put the rect of img pImg2 into r2 put (item 1 of r2 - item 1 of r1)/20 into dtlx put (item 2 of r2 - item 2 of r1)/20 into dtly put (item 3 of r2 - item 3 of r1)/20 into dbrx put (item 4 of r2 - item 4 of r1)/20 into dbry repeat with i = 1 to pNumber set the rect of img pImg1 to trunc(item 1 of r1 + i*dtlx), trunc(item 2 of r1 + i*dtly), trunc(item 3 of r1 + i*dbrx), trunc(item 4 of r1 + i*dbry) set the rect of img pImg2 to trunc(item 1 of r2 - i*dtlx), trunc(item 2 of r2 - i*dtly), trunc(item 3 of r2 - i*dbrx), trunc(item 4 of r2 - i*dbry) end repeat end imageSwap Thanks, -- Alex Tweedly http://www.tweedly.net -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.361 / Virus Database: 267.12.4/146 - Release Date: 21/10/2005 ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Help with image effect
Recently, Alex Tweedly wrote: > I want a nice, simple (?) visual effect: > > I have two images (which may be different sizes), and I want to swap > them over (such that each one stretches or shrinks to occupy the space > previously taken up by the other one). > > I thought this would be simple ... loop some number of times, adjusting > the "rect" of each image - then find a suitable "wait" value to slow it > down. > > In fact, it is unbearably slow - even for medium sized images (320*240 > swapping with a 320*480) each step is clearly visible. > For 2 images of 160*120 it's almost a smooth animation - I'm not sure if > it's just that they are smaller sizes, or if it's the fact that the > sizes remain the same. (all on medium laptop - Pentium P4 2.8G with > low-end ATI graphics) > > It does look OK on a top of the range Pentium laptop with ATI92xx > graphics (my wife needs high-end hardware to play Sims :-), but that's > not exactly typical hardware yet. > > Is there some other way I should be approaching this ? Without seeing exactly what you're doing, I'll go out on a limb and guess that yes, the images are too large for Rev to really do this smoothly. If Rev had some kind of direct-to-screen option, this might be doable, but the images are probably a bit large for Rev to do natively. Three suggestions: 1) If possible, map the images down to 8 bit color, no transparency. The fewer calculations Rev has to do to render the image/s on the card, the faster the transition can be. 2) If possible, don't do a "real" scaling effect. Instead, create the in-between frames in advance and show those, for example, as icons of a button. But again, given the size of the image, the delay between image updates may still be too great, and of course, you probably want to do this on-the-fly with any given images. I just realized you mentioned Windows platform, so QT effects are probably out. But FWIW, I've seen the QT effects do blend/dissolve effects very quickly, though I'm pretty sure the advanced ones are limited to OSX. Sorry the above isn't much help. Regards, Scott Rossi Creative Director Tactile Media, Multimedia & Design - E: [EMAIL PROTECTED] W: http://www.tactilemedia.com ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
RE: Help with image effect
Alex, Great effect!!! Strange, my portable PC 1.6Ghz is faster than my 3Ghz PC ;) 3Ghz = smooth transition 1.6Ghz = instantaneous... what you could do is test the function to see how much time it takes. Given that, increment or decrement the number of transitions... Also a percentage increase in size may look smoother but that's just a habit and it may slow down things... Last bit, that would be cool, is to switch layers so that the zoomed image becomes the top image in the middle of the transition ;) cheers Xavier > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Alex Tweedly > Sent: Sunday, October 23, 2005 8:51 PM > To: How to use Revolution > Subject: Help with image effect > > > I want a nice, simple (?) visual effect: > > I have two images (which may be different sizes), and I want > to swap them over (such that each one stretches or shrinks to > occupy the space previously taken up by the other one). > > I thought this would be simple ... loop some number of times, > adjusting the "rect" of each image - then find a suitable > "wait" value to slow it down. > > In fact, it is unbearably slow - even for medium sized images > (320*240 swapping with a 320*480) each step is clearly visible. > For 2 images of 160*120 it's almost a smooth animation - I'm > not sure if it's just that they are smaller sizes, or if it's > the fact that the sizes remain the same. (all on medium > laptop - Pentium P4 2.8G with low-end ATI graphics) > > It does look OK on a top of the range Pentium laptop with > ATI92xx graphics (my wife needs high-end hardware to play > Sims :-), but that's not exactly typical hardware yet. > > Is there some other way I should be approaching this ? > > > on imageSwap pImg1, pImg2, pNumber > > local r1, r2 > > local dtlx, dtly, dbrx, dbry > > > > if paramCount() < 3 then > > put 20 into pNumber > > end if > > > > put the rect of img pImg1 into r1 > > put the rect of img pImg2 into r2 > > > > put (item 1 of r2 - item 1 of r1)/20 into dtlx > > put (item 2 of r2 - item 2 of r1)/20 into dtly > > put (item 3 of r2 - item 3 of r1)/20 into dbrx > > put (item 4 of r2 - item 4 of r1)/20 into dbry > > > > repeat with i = 1 to pNumber > > set the rect of img pImg1 to trunc(item 1 of r1 + i*dtlx), > > trunc(item 2 of r1 + i*dtly), trunc(item 3 of r1 + i*dbrx), > trunc(item > > 4 of r1 + i*dbry) > > set the rect of img pImg2 to trunc(item 1 of r2 - i*dtlx), > > trunc(item 2 of r2 - i*dtly), trunc(item 3 of r2 - i*dbrx), > trunc(item > > 4 of r2 - i*dbry) > > end repeat > > end imageSwap > > Thanks, > > -- > Alex Tweedly http://www.tweedly.net > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.361 / Virus Database: 267.12.4/146 - Release > Date: 21/10/2005 > > ___ > use-revolution mailing list > use-revolution@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage > your subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-revolution ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
RE: Help with image effect
slower draw = laag... so how do you optimise this? You play the animation once to get the cpu/refresh speed at a number of pnumber draws - which is equal to a number of milliseconds... so the rest is drawing only within the number of cycles you need to. So for 24 fps, you send a draw or wait for the number of milliseconds to draw or (if millisecond mod (fps+-tolerance) is not your redraw speed, then DRAW... Major tip: Dont check for x more milliseconds after last redraw to draw, check to the "time" to draw... This is the milliseconds mod drawtimeinFPM (frames per ms). Putting this into practice is the next step... which I leave as exercise... for the cunning scripter... but it's not hard repeat wathever wait x mod milliseconds change things timefactor by pnumber draw next step end repeat BTW, this is dear to my animation routine in MoireX Volume 2 - the rev screen saver... http://www.monsieurx.com/modules.php?name=News&file=article&sid=160 but how many poligons can you get to move smoothly? adding rotation ideas? swap and twist the object's rects? what if the control is a movie and it's playing? ;) anyone think rev should support opengl? How far can Rev take multimedia with a simple idea? cheers Xavier http://monsieurx.com/taoo > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of MisterX > Sent: Monday, October 24, 2005 7:04 AM > To: 'How to use Revolution' > Subject: RE: Help with image effect > > Alex, > > Great effect!!! > > Strange, my portable PC 1.6Ghz is faster than my 3Ghz PC ;) > > 3Ghz = smooth transition > 1.6Ghz = instantaneous... > > what you could do is test the function to see how much time it takes. > Given that, increment or decrement the number of transitions... > > Also a percentage increase in size may look smoother but > that's just a habit and it may slow down things... > > Last bit, that would be cool, is to switch layers so that the > zoomed image becomes the top image in the middle of the transition ;) > > cheers > Xavier > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Alex > > Tweedly > > Sent: Sunday, October 23, 2005 8:51 PM > > To: How to use Revolution > > Subject: Help with image effect > > > > > > I want a nice, simple (?) visual effect: > > > > I have two images (which may be different sizes), and I > want to swap > > them over (such that each one stretches or shrinks to > occupy the space > > previously taken up by the other one). > > > > I thought this would be simple ... loop some number of times, > > adjusting the "rect" of each image - then find a suitable > "wait" value > > to slow it down. > > > > In fact, it is unbearably slow - even for medium sized > images (320*240 > > swapping with a 320*480) each step is clearly visible. > > For 2 images of 160*120 it's almost a smooth animation - > I'm not sure > > if it's just that they are smaller sizes, or if it's the > fact that the > > sizes remain the same. (all on medium laptop - Pentium P4 > 2.8G with > > low-end ATI graphics) > > > > It does look OK on a top of the range Pentium laptop with ATI92xx > > graphics (my wife needs high-end hardware to play Sims :-), > but that's > > not exactly typical hardware yet. > > > > Is there some other way I should be approaching this ? > > > > > on imageSwap pImg1, pImg2, pNumber > > > local r1, r2 > > > local dtlx, dtly, dbrx, dbry > > > > > > if paramCount() < 3 then > > > put 20 into pNumber > > > end if > > > > > > put the rect of img pImg1 into r1 > > > put the rect of img pImg2 into r2 > > > > > > put (item 1 of r2 - item 1 of r1)/20 into dtlx > > > put (item 2 of r2 - item 2 of r1)/20 into dtly > > > put (item 3 of r2 - item 3 of r1)/20 into dbrx > > > put (item 4 of r2 - item 4 of r1)/20 into dbry > > > > > > repeat with i = 1 to pNumber > > > set the rect of img pImg1 to trunc(item 1 of r1 + i*dtlx), > > > trunc(item 2 of r1 + i*dtly), trunc(item 3 of r1 + i*dbrx), > > trunc(item > > > 4 of r1 + i*dbry) > > > set the rect of img pImg2 to trunc(item 1 of r2 - i*dtlx), > > > trunc(item 2 of r2 - i*dtly), trunc(item 3 of r2 - i*dbrx), > > trunc(item > > > 4 of r2 - i*dbry) > > > end repeat > > > end imageSwap > > > > Thanks, > &g
Re: Help with image effect
MisterX wrote: Alex Here's the new script I made - note that now it's TAOO style ;) It applies to any control's rect... And it swaps layers at some point. I like it - almost ! I'm not sure it's safe to swap the layers of an arbitrary control, just because you're changing its position - doesn't that affect the tab order for focusable controls. In my specific case, what I'm actually doing is raising the layer of the two images I'm swapping to the top (otherwise they flicker in and out of view as the pass behind / in front of the other intervening images. (Think "jigsaw puzzle"). What's TAOO about this handler? It handles any occasion! It was improved, it's shared among the community for more ideas! Thanks! anyone think rev should support opengl? How far can Rev take multimedia with a simple idea? I think OpenGL would be good though I struggle to do much exciting stuff with images (far less sound and video), so I'm not sure I'd be able to make good use of it - but I'd sure like to have the chance. -- Alex Tweedly http://www.tweedly.net -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.361 / Virus Database: 267.12.5/147 - Release Date: 24/10/2005 ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Help with image effect
Scott Rossi wrote: Without seeing exactly what you're doing, I'll go out on a limb and guess that yes, the images are too large for Rev to really do this smoothly. If Rev had some kind of direct-to-screen option, this might be doable, but the images are probably a bit large for Rev to do natively. Three suggestions: Thanks Scott - that gave me the confidence that I'm not missing anything too obvious, so I pressed ahead. 1) If possible, map the images down to 8 bit color, no transparency. The fewer calculations Rev has to do to render the image/s on the card, the faster the transition can be. 2) If possible, don't do a "real" scaling effect. Instead, create the in-between frames in advance and show those, for example, as icons of a button. But again, given the size of the image, the delay between image updates may still be too great, and of course, you probably want to do this on-the-fly with any given images. You're right - arbitrary images (sections from an entire image supplied by the user). I've simply limited the max size of any image that I am trying to animate. The user can always override my choices and make bigger sections - and choose whether to disable the animation feature. -- Alex Tweedly http://www.tweedly.net -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.361 / Virus Database: 267.12.5/147 - Release Date: 24/10/2005 ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Help with image effect
MisterX wrote: Alex Here's the new script I made - note that now it's TAOO style ;) It applies to any control's rect... And it swaps layers at some point. The third parameter is a bit improved and the layer switch couldn't be smarter - no detection needed however it will switch one image's layer above anything else... That can be changed correctly with a bit more scripting... I've changed this (hopefully improved it) some more, so here it is back to add to your library. I've made the movement more "natural", and I've added a couple of more parameters to support that. The objects now accelerate from rest up to a "turnover" point, and then decelerate to a stop. on imageSwap pObj1, pObj2, pNumber, pTurnover, pTime pNumber : number of steps to make the move pTurnover : number of steps of acceleration (remainder are deceleration) pTime : number of msec between each step (assuming hw can keep up) for my jigsaw puzzle game, I'll set the turnover at around 3/4 of the total - so the pieces speed up and then screech into place just in time :-) (note it puts the moving objects on the top layers - up to you whether to do that or swap their layers). on mouseUp imageswap the long name of img 1, the long name of img 2,fld 1 end mouseUp on imageSwap pObj1, pObj2, pNumber, pTurnover, pTime local r1, r2 local dtlx, dtly, dbrx, dbry local tDecc, tRemain local tLast if paramCount() < 3 or pNumber is not a number or pNumber < 3 then put 20 into pNumber end if if paramCount() < 4 or pTurnover is not a number or pTurnover > pNumber then put pNumber / 2 into pTurnover end if if paramCount() < 5 or pTime is not a number then put 72 into pTime end if set the layer of pObj1 to the number of layers on this card + 1 set the layer of pObj2 to the number of layers on this card + 1 put the rect of pObj1 into r1 put the rect of pObj2 into r2 -- Accelerate from rest until pTurnover, then decelerate to stop at pNumber -- assume acc = 1, so decc can be calculated -- v-turn = acc * turnover = decc * remaining time put (pNumber - pTurnover) into tRemain put pTurnover / tRemain into tDecc -- now calculate distance put 0.5 * pTurnover^2 + pTurnover * tRemain - 0.5 * tDecc * tRemain^2 into tDelta put (item 1 of r2 - item 1 of r1)/tDelta into dtlx put (item 2 of r2 - item 2 of r1)/tDelta into dtly put (item 3 of r2 - item 3 of r1)/tDelta into dbrx put (item 4 of r2 - item 4 of r1)/tDelta into dbry put 0 into N put the millisecs into tLast repeat with i = 1 to pNumber if i <= pTurnover then put 0.5 * i^2 into N else put 0.5 * pTurnover^2 + pTurnover*(i-pTurnover) - ( 0.5 * tDecc * (pTurnover-i)^2 ) into N end if set the rect of pObj1 to trunc(item 1 of r1 + N*dtlx), trunc(item 2 of r1 + N*dtly), trunc(item 3 of r1 + N*dbrx), trunc(item 4 of r1 + N*dbry) set the rect of pObj2 to trunc(item 1 of r2 - N*dtlx), trunc(item 2 of r2 - N*dtly), trunc(item 3 of r2 - N*dbrx), trunc(item 4 of r2 - N*dbry) if the millisecs < tLast + pTime then wait (tLast + pTime - the millisecs) milliseconds with messages put the millisecs into tLast end if end repeat end imageSwap -- Alex Tweedly http://www.tweedly.net -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.361 / Virus Database: 267.12.5/148 - Release Date: 25/10/2005 ___ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
