| 1 | Running |
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| 2 | ======= |
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| 3 | |
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| 4 | Compilation: |
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| 5 | g++ pdfcube.cc `pkg-config pigment-0.3 poppler-glib poppler gdk-pixbuf-2.0 glib-2.0 --cflags --libs` |
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| 6 | |
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| 7 | Usage |
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| 8 | ./a.out file://`pwd`/test3.pdf |
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| 9 | |
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| 10 | |
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| 11 | Animations |
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| 12 | ========== |
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| 13 | |
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| 14 | Right now it's all a mess. There is a sketch of an api proposal to be |
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| 15 | used by some kind of animation strategy and not much more. |
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| 16 | |
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| 17 | In the main I'm experimenting with cover flow animations. I think one |
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| 18 | "pretty" way of doing cover flow is to align the slides along (tangent |
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| 19 | to, seen from above) a function like the following (gnuplot). |
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| 20 | |
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| 21 | > unset parametric |
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| 22 | > plot [-500:500] +1/((sqrt(sqrt(-x)))+1), +1/((sqrt(sqrt(x)))+1/1) |
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| 23 | |
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| 24 | While the distance from the center of the scene should be: |
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| 25 | |
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| 26 | > set parametric |
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| 27 | > plot sqrt(t),0 with linespoints |
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| 28 | |
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| 29 | Once the key point of the animation are choosen (some scaling is |
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| 30 | likely to be needed to achieve good results) the strategy can simply |
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| 31 | move the slides linearly between points: I think this linearization |
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| 32 | will not be noted by the eye. |
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| 33 | |
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| 34 | Animations should be put in some kind of class or module so that they |
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| 35 | can be easily added/changed. |
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| 36 | |
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| 37 | Note: if we want to do some rotations and translations with linear |
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| 38 | algebra a library such as Boost uBlas could be helpful. |
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| 39 | |
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| 40 | |
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| 41 | PDF Animations Mapping |
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| 42 | ====================== |
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| 43 | |
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| 44 | POPPLER_PAGE_TRANSITION_REPLACE |
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| 45 | ------------------------------- |
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| 46 | |
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| 47 | Plain switch. |
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| 48 | |
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| 49 | |
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| 50 | POPPLER_PAGE_TRANSITION_SPLIT |
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| 51 | ----------------------------- |
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| 52 | |
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| 53 | Some kind of page split. Think of having two halves of the page with |
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| 54 | complementary alpha channels. |
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| 55 | |
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| 56 | \ |
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| 57 | \ |
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| 58 | \+-----+ |
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| 59 | |\ |\ |
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| 60 | | \ | \ |
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| 61 | | \ | \ |
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| 62 | \ | \ | |
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| 63 | \ | \| |
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| 64 | \+-----+\ |
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| 65 | \ |
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| 66 | \ |
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| 67 | |
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| 68 | |
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| 69 | |
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| 70 | POPPLER_PAGE_TRANSITION_BOX |
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| 71 | --------------------------- |
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| 72 | |
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| 73 | This can be mapped to the cube. |
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| 74 | |
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| 75 | |
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| 76 | POPPLER_PAGE_TRANSITION_FLY |
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| 77 | --------------------------- |
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| 78 | |
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| 79 | This could be some slide fading while rapidly going towards the |
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| 80 | viewer. |
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| 81 | |
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| 82 | |
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| 83 | POPPLER_PAGE_TRANSITION_PUSH |
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| 84 | ---------------------------- |
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| 85 | |
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| 86 | Could be the opposite of fly. |
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| 87 | |
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| 88 | |
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| 89 | POPPLER_PAGE_TRANSITION_FADE |
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| 90 | ---------------------------- |
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| 91 | |
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| 92 | Normal fading |
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| 93 | |
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| 94 | |
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| 95 | The following transition codes are free for future usages: |
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| 96 | POPPLER_PAGE_TRANSITION_BLINDS, POPPLER_PAGE_TRANSITION_WIPE, |
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| 97 | POPPLER_PAGE_TRANSITION_DISSOLVE, POPPLER_PAGE_TRANSITION_GLITTER, |
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| 98 | POPPLER_PAGE_TRANSITION_COVER, POPPLER_PAGE_TRANSITION_UNCOVER |
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