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Merge remote-tracking branch 'oak-tree/master'

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* oak-tree/master:
  set label of edge at the angle of this edge.
This commit is contained in:
Dennis Hotson 2014-01-11 04:40:40 +11:00
commit 36c885871e
1 changed files with 13 additions and 2 deletions
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15
springyui.js
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@ -167,7 +167,8 @@ jQuery.fn.springy = function(params) {
} }
} }
var spacing = 6.0; //change default to 10.0 to allow text fit between edges
var spacing = 10.0; //was 6.0 before
// Figure out how far off center the line should be drawn // Figure out how far off center the line should be drawn
var offset = normal.multiply(-((total - 1) * spacing)/2.0 + (n * spacing)); var offset = normal.multiply(-((total - 1) * spacing)/2.0 + (n * spacing));
@ -235,7 +236,11 @@ jQuery.fn.springy = function(params) {
ctx.textBaseline = "top"; ctx.textBaseline = "top";
ctx.font = (edge.data.font !== undefined) ? edge.data.font : edgeFont; ctx.font = (edge.data.font !== undefined) ? edge.data.font : edgeFont;
ctx.fillStyle = "#5BA6EC"; ctx.fillStyle = "#5BA6EC";
ctx.fillText(text, (x1+x2)/2, (y1+y2)/2); var xText = (s1.x+s2.x)/2;
var yText = (s1.y+s2.y)/2;
ctx.translate(xText, yText);
ctx.rotate(getTextAngle(s1.x,s1.y,s2.x,s2.y));
ctx.fillText(text, 0,-2);
ctx.restore(); ctx.restore();
} }
@ -275,6 +280,12 @@ jQuery.fn.springy = function(params) {
renderer.start(); renderer.start();
// return angle of text in radian
function getTextAngle(x1, y1, x2, y2){
var tan = (y2-y1)/(x2-x1);
return Math.atan(tan);
}
// helpers for figuring out where to draw arrows // helpers for figuring out where to draw arrows
function intersect_line_line(p1, p2, p3, p4) { function intersect_line_line(p1, p2, p3, p4) {
var denom = ((p4.y - p3.y)*(p2.x - p1.x) - (p4.x - p3.x)*(p2.y - p1.y)); var denom = ((p4.y - p3.y)*(p2.x - p1.x) - (p4.x - p3.x)*(p2.y - p1.y));