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Step branch #1

merged 261 commits into from Jul 21, 2016
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push the viewport stuff together

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pvdz committed Feb 19, 2016
commit e8ec035e3527a775390bf6f001bb65de97239977
@@ -138,19 +138,19 @@ <h1>
FLOOR = floor,
MIN = min,
MAX = max,
RANDOM = random,
SIN = sin,
COS = cos,
PI = PI,
SQRT = sqrt,
ABS = abs,
ATAN2 = atan2;
var K = 200; // particle count wide and high (so total num of particles is K*K)
var W = a.width;
var H = a.height;
var M = MIN(W, H); // get smallest dimension, serves as view dimensions (a square)
var W;
var H;
var M = MIN(W= a.width, H= a.height); // get smallest dimension, serves as view dimensions (a square)
var M2 = FLOOR(M/2); // mid of view
var OX = FLOOR(W/2 - M2);
var OY = FLOOR(H/2 - M2);
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