I went crawling in my archives to get this mail out since I added scaling and rotation to the "video" instance in our NetStream-SquareTest.swf testcase.
Please take a look at that test. Does it make our drawVideoFrame() method signature bogus now ? --strk; Both AGG and OpenGL (the only ones I tested) fail. The test is visual, not automated yet. On Tue, Apr 17, 2007 at 02:15:53PM +0200, Udo Giacomozzi wrote: > Hello strk, > > Tuesday, April 17, 2007, 1:55:38 PM, you wrote: > >> The video is streched (*apparently* regardless of aspect ratio!) to > >> that size, so no crop is necessary. > > s> If this is the case I agree with you, it is completely unecessarly to have > s> that argument, as the scale can be concatenated with the matrix parameter, > right ? > > No, there are *two* scales: one for the video container (I called it > "video instance"), and one for the video itself. > > Example: > > You have a SWF with a 320x240 pixel (6400x4800 TWIPS) video > *container* that loads a video (FLV) which is sized 160x120. This > means that the renderer has to double the video frames (in size), > however the matrix is still an "identity". > > Now say the video *container* is scaled by 150% using _xscale/_yscale > in ActionScript. Now the matrix will have it's scale fields to 1.5 but > the video needs to be scaled by 300%. > > You need > > - the untransformed bounds to know the *outline* of the video > *container* > > - the matrix to: > - move, scale and rotate that outline (applied to "bounds") > - move, scale and rotate the video (matrix is changed before being > applied) > > - the frame size of the video itself so that it can be streched to the > container outline > > When you concatenate the video-to-container scale to the matrix you > will also scale the container, which is not what you want. > > Think like the FLV video is a child of the container. > > So the information contained in "bounds" *is* important, but it's > overkill to use Range2d for that since minX and minY will *always* be > zero and Range2d instance does nothing but carrying two "double" > values. > > Udo > > > > > _______________________________________________ > Gnash-commit mailing list > [EMAIL PROTECTED] > http://lists.gnu.org/mailman/listinfo/gnash-commit -- () ASCII Ribbon Campaign /\ Keep it simple! _______________________________________________ Gnash-dev mailing list [email protected] http://lists.gnu.org/mailman/listinfo/gnash-dev
