Created
November 17, 2010 12:37
-
-
Save aumouvantsillage/703346 to your computer and use it in GitHub Desktop.
How Sozi 10.12 will handle transitions from one frame to the other
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?xml version="1.0" encoding="UTF-8" standalone="no"?> | |
<svg xmlns="http://www.w3.org/2000/svg"> | |
<g id="container"> | |
<rect id="source-frame" x="10" y="10" width="50" height="30" stroke="green" fill="#ada" fill-opacity="0.5" transform="translate(70, 100) scale(4) rotate(30)" /> | |
<rect id="target-frame" x="10" y="10" width="50" height="30" stroke="red" fill="#daa" fill-opacity="0.5" transform="translate(400, 500) scale(6) rotate(-30)" /> | |
</g> | |
<script type="application/javascript"><![CDATA[ | |
var svgns = "http://www.w3.org/2000/svg"; | |
var container = document.getElementById("container"); | |
function getRectangleGeometry (id) { | |
// Get the coordinates and dimensions of the rectangle | |
var rect = document.getElementById(id); | |
var x = parseFloat(rect.getAttribute("x")); | |
var y = parseFloat(rect.getAttribute("y")); | |
var width = parseFloat(rect.getAttribute("width")); | |
var height = parseFloat(rect.getAttribute("height")); | |
// Get the transformation matrix applied to the rectangle | |
// and compute the scale factor | |
var matrix = rect.getCTM(); | |
var scale = Math.sqrt(matrix.a * matrix.a + matrix.b * matrix.b); | |
// Compute the coordinates of the center of the rectangle | |
var center = document.documentElement.createSVGPoint(); | |
center.x = x + width / 2; | |
center.y = y + height / 2; | |
center = center.matrixTransform(matrix); | |
return { | |
cx: center.x, | |
cy: center.y, | |
width: width * scale, | |
height: height * scale, | |
rotate: Math.atan2(matrix.b, matrix.a) * 180 / Math.PI | |
}; | |
} | |
var sourceFrame = getRectangleGeometry("source-frame"); | |
var targetFrame = getRectangleGeometry("target-frame"); | |
var startDateMs; | |
var endDateMs; | |
var horloge; | |
function start(dureeMs, intervalleMs) { | |
startDateMs = Date.now(); | |
endDateMs = startDateMs + dureeMs; | |
horloge = window.setInterval(step, intervalleMs); | |
} | |
function step () { | |
var dateMs = Date.now(); | |
if(dateMs >= endDateMs) { | |
window.clearInterval(horloge); | |
dateMs = endDateMs; | |
} | |
var progress = (dateMs - startDateMs) / (endDateMs - startDateMs); | |
var remaining = 1 - progress; | |
// Interpolate source and target rectangles | |
var inter = {}; | |
for (var attr in sourceFrame) { | |
inter[attr] = sourceFrame[attr] * remaining + targetFrame[attr] * progress; | |
} | |
// Compute the coordinates and dimensions of the display area | |
var scale = Math.min(window.innerWidth / inter.width, window.innerHeight / inter.height); | |
var displayWidth = inter.width * scale; | |
var displayHeight = inter.height * scale; | |
var displayX = (window.innerWidth - displayWidth) / 2; | |
var displayY = (window.innerHeight - displayHeight) / 2; | |
// Compute the translation to perform on the document | |
var translateX = - inter.cx + inter.width / 2 + displayX / scale; | |
var translateY = - inter.cy + inter.height / 2 + displayY / scale; | |
// Perform the transformation | |
container.setAttribute("transform", | |
"scale(" + scale + ") " + | |
"translate(" + translateX + "," + translateY + ") " + | |
"rotate(" + (- inter.rotate) + "," + inter.cx + "," + inter.cy + ")" | |
); | |
// Add traces of the border and the center of the display area | |
var m = container.getCTM().inverse(); | |
var transform = "matrix(" + m.a + "," + m.b + "," + m.c + "," + m.d + "," + m.e + "," + m.f + ")"; | |
var rect = document.createElementNS(svgns, "rect"); | |
rect.setAttribute("x", displayX); | |
rect.setAttribute("y", displayY); | |
rect.setAttribute("width", displayWidth); | |
rect.setAttribute("height", displayHeight); | |
rect.setAttribute("stroke", "blue"); | |
rect.setAttribute("fill", "none"); | |
rect.setAttribute("transform", transform); | |
container.appendChild(rect); | |
var circle = document.createElementNS(svgns, "circle"); | |
circle.setAttribute("cx", displayX + displayWidth / 2); | |
circle.setAttribute("cy", displayY + displayHeight / 2); | |
circle.setAttribute("r", 10); | |
circle.setAttribute("stroke", "blue"); | |
circle.setAttribute("fill", "blue"); | |
circle.setAttribute("transform", transform); | |
container.appendChild(circle); | |
if(dateMs === endDateMs) { | |
stop(); | |
} | |
} | |
function stop () { | |
window.setTimeout(function () { | |
container.removeAttribute("transform"); | |
}, 1000); | |
} | |
document.documentElement.onclick = function() { | |
start(3000, 40); | |
}; | |
]]></script> | |
</svg> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment