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I'm too good, progressive streaming with only frustum sent, and if

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nothing, just stream
This commit is contained in:
Thomas FORGIONE
2015-06-26 09:22:32 +02:00
parent 741f23e03d
commit 5ec0a152f5
4 changed files with 142 additions and 41 deletions
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128
geo/MeshStreamer.js
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@@ -328,6 +328,14 @@ geo.MeshStreamer.prototype.start = function(socket) {
// Send next elements
var next = self.nextElements(camera);
if (next.data.length === 0) {
// If nothing, just serve stuff
var tmp = self.nextElements(camera, true);
next.data = tmp.data;
}
socket.emit('elements', next.data);
if (next.finished) {
@@ -373,28 +381,49 @@ geo.MeshStreamer.prototype.nextMaterials = function() {
* only interesting parts according to the camera
* @returns {array} an array of elements ready to send
*/
geo.MeshStreamer.prototype.nextElements = function(_camera) {
geo.MeshStreamer.prototype.nextElements = function(_camera, force) {
if (force === undefined) {
force = false;
}
// Prepare camera (and scale to model)
var camera = null;
var planes = [];
var direction;
if (_camera !== null) {
var camera = {
camera = {
position: {
x: _camera[0],
y: _camera[1],
z: _camera[2]
x: _camera[0][0],
y: _camera[0][1],
z: _camera[0][2]
},
target: {
x: _camera[3],
y: _camera[4],
z: _camera[5]
x: _camera[1][0],
y: _camera[1][1],
z: _camera[1][2]
}
}
for (var i = 2; i < _camera.length; i++) {
planes.push({
normal: {
x: _camera[i][0],
y: _camera[i][1],
z: _camera[i][2]
},
constant: _camera[i][3]
});
}
// Compute camera direction
var direction = {
direction = {
x: camera.target.x - camera.position.x,
y: camera.target.y - camera.position.y,
z: camera.target.z - camera.position.z
@@ -436,36 +465,73 @@ geo.MeshStreamer.prototype.nextElements = function(_camera) {
var vertex2 = this.vertices[currentFace.b];
var vertex3 = this.vertices[currentFace.c];
if (camera !== null) {
// if (camera !== null) {
var v1 = {
x: vertex1.x - camera.position.x,
y: vertex1.y - camera.position.y,
z: vertex1.z - camera.position.z
};
// var v1 = {
// x: vertex1.x - camera.position.x,
// y: vertex1.y - camera.position.y,
// z: vertex1.z - camera.position.z
// };
var v2 = {
x: vertex2.x - camera.position.x,
y: vertex2.y - camera.position.y,
z: vertex2.z - camera.position.z
};
// var v2 = {
// x: vertex2.x - camera.position.x,
// y: vertex2.y - camera.position.y,
// z: vertex2.z - camera.position.z
// };
var v3 = {
x: vertex3.x - camera.position.x,
y: vertex3.y - camera.position.y,
z: vertex3.z - camera.position.z
};
// var v3 = {
// x: vertex3.x - camera.position.x,
// y: vertex3.y - camera.position.y,
// z: vertex3.z - camera.position.z
// };
if (
direction.x * v1.x + direction.y * v1.y + direction.z * v1.z < 0 &&
direction.x * v2.x + direction.y * v2.y + direction.z * v2.z < 0 &&
direction.x * v3.x + direction.y * v3.y + direction.z * v3.z < 0
) {
// if (
// direction.x * v1.x + direction.y * v1.y + direction.z * v1.z < 0 &&
// direction.x * v2.x + direction.y * v2.y + direction.z * v2.z < 0 &&
// direction.x * v3.x + direction.y * v3.y + direction.z * v3.z < 0
// ) {
continue;
// continue;
// }
// }
if (!force) {
var exitToContinue = false;
threeVertices = [vertex1, vertex2, vertex3];
for (var i = 0; i < threeVertices.length; i++) {
var vertex = threeVertices[i];
for (var j = 0; j < planes.length; j++) {
var plane = planes[j];
distance =
plane.normal.x * vertex.x +
plane.normal.y * vertex.y +
plane.normal.z * vertex.z +
plane.constant;
if (distance < 0)
{
exitToContinue = true;
break;
}
}
if (exitToContinue)
break;
}
if (exitToContinue)
continue;
}
if (!vertex1.sent) {