Tweet
Tweet

Slide 1

Slide 1 text

BACK-END CANVAS HTML5 SPOTLIGHT

Slide 2

Slide 2 text

No content

Slide 3

Slide 3 text

No content

Slide 4

Slide 4 text

No content

Slide 5

Slide 5 text

“Be your digital self on the Best Network”

Slide 6

Slide 6 text

No content

Slide 7

Slide 7 text

http://www.flashterm.com

Slide 8

Slide 8 text

No content

Slide 9

Slide 9 text

http://www.asciimeo.com

Slide 10

Slide 10 text

No content

Slide 11

Slide 11 text

No content

Slide 12

Slide 12 text

http://www.youtube.com/watch?v=vmB0YmcqosI

Slide 13

Slide 13 text

No content

Slide 14

Slide 14 text

PROTOTYPING

Slide 15

Slide 15 text

CANVAS 2D CONTEXT

Slide 16

Slide 16 text

No content

Slide 17

Slide 17 text

bitmapData.applyFilter( ... ); bitmapData.clone( ... ); bitmapData.compare( ... ); bitmapData.copyChannel( ... ); bitmapData.copyPixels( ... ); bitmapData.draw( ... ); bitmapData.fillRect( ... ); bitmapData.floodFill( ... ); bitmapData.getPixels( ... ); bitmapData.histogram( ... ); bitmapData.noise( ... ); bitmapData.perlinNoise( ... ); bitmapData.setPixel( ... ); bitmapData.threshold( ... );

Slide 18

Slide 18 text

No content

Slide 19

Slide 19 text

No content

Slide 20

Slide 20 text

ASCII ART

Slide 21

Slide 21 text

No content

Slide 22

Slide 22 text

RECURSION

Slide 23

Slide 23 text

No content

Slide 24

Slide 24 text

No content

Slide 25

Slide 25 text

gen(1, 0, 0, img.width, img.width);

Slide 26

Slide 26 text

gen(2, 0, 0, img.width, img.width);

Slide 27

Slide 27 text

gen(3, 0, 0, img.width, img.width);

Slide 28

Slide 28 text

gen(4, 0, 0, img.width, img.width);

Slide 29

Slide 29 text

gen(5, 0, 0, img.width, img.width);

Slide 30

Slide 30 text

gen(6, 0, 0, img.width, img.width);

Slide 31

Slide 31 text

gen(7, 0, 0, img.width, img.width);

Slide 32

Slide 32 text

gen(8, 0, 0, img.width, img.width);

Slide 33

Slide 33 text

if(cell.x+cell.w == nextCell.x && cell.y == nextCell.y)

Slide 34

Slide 34 text

No content

Slide 35

Slide 35 text

BOX FITTING

Slide 36

Slide 36 text

No content

Slide 37

Slide 37 text

No content

Slide 38

Slide 38 text

No content

Slide 39

Slide 39 text

No content

Slide 40

Slide 40 text

e x p a n d !

Slide 41

Slide 41 text

No content

Slide 42

Slide 42 text

No content

Slide 43

Slide 43 text

WORD FITTING

Slide 44

Slide 44 text

No content

Slide 45

Slide 45 text

No content

Slide 46

Slide 46 text

No content

Slide 47

Slide 47 text

JUICE 3.875

Slide 48

Slide 48 text

No content

Slide 49

Slide 49 text

TYPOGRAPHY JUICE BEN HTML

Slide 50

Slide 50 text

No content

Slide 51

Slide 51 text

PROBLEM #1 SPEED

Slide 52

Slide 52 text

PROBLEM #2 PERFORMANCE VARIABILITY

Slide 53

Slide 53 text

No content

Slide 54

Slide 54 text

No content

Slide 55

Slide 55 text

Node is... - bindings to V8 for non-browser work (sockets, files, etc) - non-blocking, asynchronous interfaces - one thread, one call stack (does not scale)

Slide 56

Slide 56 text

Scaling... - process spawning - sendmsg - memory isolation enforced by process boundary

Slide 57

Slide 57 text

node.js bindings node.js standard library V8 libeio libev JavaScript C

Slide 58

Slide 58 text

No content

Slide 59

Slide 59 text

No content

Slide 60

Slide 60 text

No content

Slide 61

Slide 61 text

No content

Slide 62

Slide 62 text

No content

Slide 63

Slide 63 text

No content

Slide 64

Slide 64 text

No content

Slide 65

Slide 65 text

No content

Slide 66

Slide 66 text

No content

Slide 67

Slide 67 text

No content

Slide 68

Slide 68 text

CLIENT SERVER

Slide 69

Slide 69 text

{json} +

Slide 70

Slide 70 text

No content

Slide 71

Slide 71 text

No content

Slide 72

Slide 72 text

No content

Slide 73

Slide 73 text

No content

Slide 74

Slide 74 text

~30,000ms

Slide 75

Slide 75 text

iterating over active pixels

Slide 76

Slide 76 text

dynamic_bitset

Slide 77

Slide 77 text

GO NATIVE

Slide 78

Slide 78 text

child_process vs C/C++ bindings

Slide 79

Slide 79 text

No content

Slide 80

Slide 80 text

No content

Slide 81

Slide 81 text

No content

Slide 82

Slide 82 text

No content

Slide 83

Slide 83 text

pix_array pix_active

Slide 84

Slide 84 text

No content

Slide 85

Slide 85 text

No content

Slide 86

Slide 86 text

No content

Slide 87

Slide 87 text

10x Faster!

Slide 88

Slide 88 text

No content

Slide 89

Slide 89 text

No content

Slide 90

Slide 90 text

No content

Slide 91

Slide 91 text

What have we learned?

Slide 92

Slide 92 text

@peter_nitsch @tllabs gplus.to/peternitsch