summaryrefslogtreecommitdiff
path: root/misc/openlayers/examples/canvas-inspector.js
diff options
context:
space:
mode:
authorChris Schlaeger <chris@linux.com>2015-10-17 21:36:38 +0200
committerChris Schlaeger <chris@linux.com>2015-10-17 21:36:38 +0200
commite30f267181d990947e67909de4809fa941698c85 (patch)
tree46e9f94c2b3699ed378963b420b8a8d361286ea1 /misc/openlayers/examples/canvas-inspector.js
parente763ceb183f389fcd314a4a6a712d87c9d4cdb32 (diff)
downloadpostrunner-e30f267181d990947e67909de4809fa941698c85.zip
Upgrading openlayers to 3.x
Diffstat (limited to 'misc/openlayers/examples/canvas-inspector.js')
-rw-r--r--misc/openlayers/examples/canvas-inspector.js91
1 files changed, 0 insertions, 91 deletions
diff --git a/misc/openlayers/examples/canvas-inspector.js b/misc/openlayers/examples/canvas-inspector.js
deleted file mode 100644
index 064b4d5..0000000
--- a/misc/openlayers/examples/canvas-inspector.js
+++ /dev/null
@@ -1,91 +0,0 @@
-
-var features = [
-
- new OpenLayers.Feature.Vector(
- OpenLayers.Geometry.fromWKT(
- "LINESTRING(-90 90, 90 -90)"
- ),
- {color: "#0f0000"}
- ),
-
- new OpenLayers.Feature.Vector(
- OpenLayers.Geometry.fromWKT(
- "LINESTRING(100 50, -100 -50)"
- ),
- {color: "#00ff00"}
- )
-
-];
-
-var layer = new OpenLayers.Layer.Vector(null, {
- styleMap: new OpenLayers.StyleMap({
- strokeWidth: 3,
- strokeColor: "${color}"
- }),
- isBaseLayer: true,
- renderers: ["Canvas"],
- rendererOptions: {hitDetection: true}
-});
-layer.addFeatures(features);
-
-var map = new OpenLayers.Map({
- div: "map",
- layers: [layer],
- center: new OpenLayers.LonLat(0, 0),
- zoom: 0
-});
-
-var xOff = 2, yOff = 2;
-
-var rows = 1 + (2 * yOff);
-var cols = 1 + (2 * xOff);
-
-var template = new jugl.Template("template");
-template.process({
- clone: true,
- parent: "inspector",
- context: {
- rows: rows,
- cols: cols
- }
-});
-
-function isDark(r, g, b, a) {
- a = a / 255;
- var da = 1 - a;
- // convert color values to decimal (assume white background)
- r = (a * r / 255) + da;
- g = (a * g / 255) + da;
- b = (a * b / 255) + da;
- // use w3C brightness measure
- var brightness = (r * 0.299) + (g * 0.587) + (b * 0.144);
- return brightness < 0.5;
-}
-
-var context = layer.renderer.canvas; //layer.renderer.hitContext;
-var size = map.getSize();
-map.events.on({
- mousemove: function(event) {
- var x = event.xy.x - 1; // TODO: fix this elsewhere
- var y = event.xy.y;
- if ((x >= xOff) && (x < size.w - xOff) && (y >= yOff) && (y < size.h - yOff)) {
- var data = context.getImageData(x - xOff, y - yOff, rows, cols).data;
- var offset, red, green, blue, alpha, cell;
- for (var i=0; i<cols; ++i) {
- for (var j=0; j<rows; ++j) {
- offset = (i * 4) + (j * 4 * cols);
- red = data[offset];
- green = data[offset + 1];
- blue = data[offset + 2];
- alpha = data[offset + 3];
- cell = document.getElementById("c" + i + "r" + j);
- cell.innerHTML = "R: " + red + "<br>G: " + green + "<br>B: " + blue + "<br>A: " + alpha;
- cell.style.backgroundColor = "rgba(" + red + ", " + green + ", " + blue + ", " + (alpha / 255) + ")";
- cell.style.color = isDark(red, green, blue, alpha) ? "#ffffff" : "#000000";
- }
- }
- }
- }
-});
-
-