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Copyright (c) 2012, Motorola Mobility LLC.
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var GeomObj = require("js/lib/geom/geom-obj").GeomObj;
var ShapePrimitive = require("js/lib/geom/shape-primitive").ShapePrimitive;
var MaterialsModel = require("js/models/materials-model").MaterialsModel;
///////////////////////////////////////////////////////////////////////
// Class GLLine
// GL representation of a line.
// Derived from class GeomObj
///////////////////////////////////////////////////////////////////////
exports.Line = Object.create(GeomObj, {
///////////////////////////////////////////////////////////////////////
// Instance variables
///////////////////////////////////////////////////////////////////////
_width: { value : 2.0, writable: true },
_height: { value : 2.0, writable: true },
_xOffset: { value : 0, writable: true },
_yOffset: { value : 0, writable: true },
// If line doesn't fit in canvas world, we had to grow the canvas by this much on either side
_xAdj: { value : 0, writable: true },
_yAdj: { value : 0, writable: true },
_slope: { value : 0, writable: true },
_strokeWidth: { value : 0.25, writable: true },
_strokeStyle: { value : "Solid", writable: true },
_scaleX: { value : 1.0, writable: true },
_scaleY: { value : 1.0, writable: true },
canFill: { value : false, writable: false },
init: {
value: function(world, xOffset, yOffset, width, height, slope, strokeSize, strokeColor, strokeMaterial, strokeStyle, xAdj, yAdj) {
if (arguments.length > 0) {
this._width = width;
this._height = height;
this._xOffset = xOffset;
this._yOffset = yOffset;
this._xAdj = xAdj;
this._yAdj = yAdj;
this._slope = slope;
this._strokeWidth = strokeSize;
this._strokeColor = strokeColor;
this._strokeStyle = strokeStyle;
this._scaleX = (world.getViewportWidth())/(world.getViewportHeight());
}
this._strokeVerticesLen = 0;
this.m_world = world;
this._materialAmbient = [0.2, 0.2, 0.2, 1.0];
this._materialDiffuse = [0.4, 0.4, 0.4, 1.0];
this._materialSpecular = [0.4, 0.4, 0.4, 1.0];
if(strokeMaterial) {
this._strokeMaterial = strokeMaterial.dup();
} else {
this._strokeMaterial = MaterialsModel.getMaterial( MaterialsModel.getDefaultMaterialName() ).dup();
}
if(strokeColor) {
if(this._strokeMaterial.hasProperty("color")) {
this._strokeMaterial.setProperty( "color", this._strokeColor );
} else if (this._strokeMaterial && (this._strokeMaterial.gradientType === this._strokeColor.gradientMode)) {
this._strokeMaterial.setGradientData(this._strokeColor.color);
}
}
}
},
////////////////////////////////////////////////////////////////////////
// Property Accessors
///////////////////////////////////////////////////////////////////////
// TODO - Use getters/setters in the future
getStrokeWidth: {
value: function() {
return this._strokeWidth;
}
},
setStrokeWidth: {
value: function(w) {
this._strokeWidth = w;
}
},
getStrokeMaterial: {
value: function() {
return this._strokeMaterial;
}
},
setStrokeMaterial: {
value: function(m) {
this._strokeMaterial = m;
}
},
getFillMaterial: {
value: function() {
return null;
}
},
getStrokeColor: {
value: function() {
return this._strokeColor;
}
},
// setStrokeColor: {
// value: function(c) {
// this._strokeColor = c;
// }
// },
getStrokeStyle: {
value: function() {
return this._strokeStyle;
}
},
setStrokeStyle: {
value: function(s) {
this._strokeStyle = s;
}
},
getWidth: {
value: function() {
return this._width;
}
},
setWidth: {
value: function(w) {
this._width = w;
}
},
getHeight: {
value: function() {
return this._height;
}
},
setHeight: {
value: function(h) {
this._height = h;
}
},
getXAdj: {
value: function() {
return this._xAdj;
}
},
setXAdj: {
value: function(x) {
this._xAdj = x;
}
},
getYAdj: {
value: function() {
return this._yAdj;
}
},
setYAdj: {
value: function(y) {
this._yAdj = y;
}
},
getSlope: {
value: function() {
return this._slope;
}
},
setSlope: {
value: function(m) {
this._slope = m;
}
},
geomType: {
value: function() {
return this.GEOM_TYPE_LINE;
}
},
///////////////////////////////////////////////////////////////////////
// Methods
///////////////////////////////////////////////////////////////////////
exportJSON: {
value: function() {
var jObj =
{
'type' : this.geomType(),
'xoff' : this._xOffset,
'yoff' : this._yOffset,
'width' : this._width,
'height' : this._height,
'xAdj' : this._xAdj,
'yAdj' : this._yAdj,
'slope' : this._slope,
'strokeWidth' : this._strokeWidth,
'strokeColor' : this._strokeColor,
'strokeStyle' : this._strokeStyle,
'strokeMat' : this._strokeMaterial ? this._strokeMaterial.getName() : MaterialsModel.getDefaultMaterialName(),
'materials' : this.exportMaterialsJSON()
};
return jObj;
}
},
importJSON: {
value: function(jObj) {
this._xOffset = jObj.xoff;
this._yOffset = jObj.yoff;
this._width = jObj.width;
this._height = jObj.height;
this._xAdj = jObj.xAdj;
this._yAdj = jObj.yAdj;
this._strokeWidth = jObj.strokeWidth;
this._slope = jObj.slope;
this._strokeStyle = jObj.strokeStyle;
this._strokeColor = jObj.strokeColor;
var strokeMaterialName = jObj.strokeMat;
var strokeMat = MaterialsModel.getMaterial( strokeMaterialName );
if (!strokeMat) {
console.log( "object material not found in library: " + strokeMaterialName );
strokeMat = MaterialsModel.getMaterial( MaterialsModel.getDefaultMaterialName() );
}
this._strokeMaterial = strokeMat;
this.importMaterialsJSON( jObj.materials );
}
},
buildBuffers: {
value: function() {
// get the world
var world = this.getWorld();
if (!world) throw( "null world in buildBuffers" );
if (!world._useWebGL) return;
// make sure RDGE has the correct context
RDGE.globals.engine.setContext( world.getCanvas().rdgeid );
// create the gl buffer
var gl = world.getGLContext();
this._strokeVerticesLen = 0;
var strokeVertices = [];
var strokeTextures = [];
var strokeNormals = [];
var strokeColors = [];
// var scaleMat = Matrix.I(3);
// scaleMat.elements[0][0] = this._scaleX;
// scaleMat.elements[1][1] = this._scaleY;
// get the normalized device coordinates (NDC) for
// all position and dimensions.
var vpw = world.getViewportWidth(), vph = world.getViewportHeight();
var xNDC = 2*this._xOffset/vpw, yNDC = 2*this._yOffset/vph,
xFillNDC = this._width/vpw, yFillNDC = this._height/vph,
xAdjNDC = this._xAdj/vpw, yAdjNDC = this._yAdj/vph,
xStrokeNDC = this._strokeWidth/vpw, yStrokeNDC = this._strokeWidth/vph;
var aspect = world.getAspect();
var zn = world.getZNear(), zf = world.getZFar();
var t = zn * Math.tan(world.getFOV() * Math.PI / 360.0),
b = -t,
r = aspect*t,
l = -r;
// calculate the object coordinates from their NDC coordinates
var z = -world.getViewDistance();
// get the position of the origin
var x = -z*(r-l)/(2.0*zn)*xNDC,
y = -z*(t-b)/(2.0*zn)*yNDC;
// get the x and y fill
var xFill = -z*(r-l)/(2.0*zn)*xFillNDC,
yFill = -z*(t-b)/(2.0*zn)*yFillNDC;
// get the x & y stroke size
var xStroke = -z*(r-l)/(2.0*zn)*xStrokeNDC,
yStroke = -z*(t-b)/(2.0*zn)*yStrokeNDC;
// get the x & y adjustments size
var xAdj = -z*(r-l)/(2.0*zn)*xAdjNDC*2,
yAdj = -z*(t-b)/(2.0*zn)*yAdjNDC*2;
this._primArray = [];
this._materialArray = [];
this._materialTypeArray = [];
this._materialNodeArray = [];
this._scaleX = (world._viewportWidth)/(world._viewportHeight);
var innerX = xFill-xStroke;
var innerY = yFill-yStroke;
if(this._slope === "vertical") {
strokeVertices = [
-xFill+x, yFill+y, 0.0,
xFill+x, yFill+y, 0.0,
-xFill+x, -yFill+y, 0.0,
xFill+x, -yFill+y, 0.0,
-xFill+x, -yFill+y, 0.0,
xFill+x, yFill+y, 0.0
];
strokeTextures = [
0, 1,
1, 1,
0, 0,
1, 0,
0, 0,
1, 1
];
} else if(this._slope === "horizontal") {
// right now, this is the same as vertical line because,
// our canvas is the same size as us.
// But, we will need to use this when drawing in an existing GLWorld with other shapes
strokeVertices = [
-xFill+x, yFill+y, 0.0,
xFill+x, yFill+y, 0.0,
-xFill+x, -yFill+y, 0.0,
xFill+x, -yFill+y, 0.0,
-xFill+x, -yFill+y, 0.0,
xFill+x, yFill+y, 0.0
];
strokeTextures = [
0, 1,
1, 1,
0, 0,
1, 0,
0, 0,
1, 1
];
} else if(this._slope > 0) {
// if slope is positive, draw a line from top-left to bottom-right
strokeVertices = [
-xFill+x, yFill-2*yAdj+y, 0.0,
-xFill+2*xAdj+x, yFill+y, 0.0,
xFill-2*xAdj+x, -yFill+y, 0.0,
xFill+x, -yFill+2*yAdj+y, 0.0,
xFill-2*xAdj+x, -yFill+y, 0.0,
-xFill+2*xAdj+x, yFill+y, 0.0
];
strokeTextures = [
0, 0,
0, 1,
1, 0,
1, 1,
1, 0,
0, 1
];
} else {
// else slope is negative, draw a line from bottom-left to top-right
strokeVertices = [
xFill-2*xAdj+x, yFill+y, 0.0,
-xFill+2*xAdj+x, -yFill+y, 0.0,
-xFill+x, -yFill+2*yAdj+y, 0.0,
-xFill+2*xAdj+x, -yFill+y, 0.0,
xFill-2*xAdj+x, yFill+y, 0.0,
xFill+x, yFill-2*yAdj+y, 0.0
];
strokeTextures = [
1, 1,
0, 0,
0, 1,
0, 0,
1, 1,
1, 0
];
}
var z = 0;
var indices = [];
var nVerts = strokeVertices.length/3;
// stroke normals
var index = 0;
for (var i=0; i<nVerts; i++) {
// push a normal for each vertex in the stroke
strokeNormals.push(0.0); strokeNormals.push(0.0); strokeNormals.push(1);
indices.push( index ); index++;
}
var strokeMaterial = this.makeStrokeMaterial();
// var prim = ShapePrimitive.create(strokeVertices, strokeNormals, strokeTextures, indices, RDGE.globals.engine.getContext().renderer.TRIANGLES, indices.length);
// this._primArray.push( prim );
// this._materialNodeArray.push( strokeMaterial.getMaterialNode() );
// refine the mesh for vertex deformations
if (strokeMaterial)
{
var primArray;
if (strokeMaterial.hasVertexDeformation())
{
var paramRange = strokeMaterial.getVertexDeformationRange();
var tolerance = strokeMaterial.getVertexDeformationTolerance();
var nVertices = indices.length;
nVertices = ShapePrimitive.refineMesh( strokeVertices, strokeNormals, strokeTextures, indices, nVertices, paramRange, tolerance );
var subdividedParts = ShapePrimitive.subdivideOversizedMesh( strokeVertices, strokeNormals, strokeTextures, indices );
primArray = [];
if (subdividedParts)
{
for (var i=0; i<subdividedParts.length; i++)
{
var obj = subdividedParts[i];
primArray.push( ShapePrimitive.create(obj.vertices, obj.normals, obj.uvs, obj.indices, RDGE.globals.engine.getContext().renderer.TRIANGLES, obj.vertices.length/3) );
}
}
else
primArray = [ ShapePrimitive.create(vrts, nrms, uvs, indices, RDGE.globals.engine.getContext().renderer.TRIANGLES, nVertices) ];
}
else
{
// create the RDGE primitive
primArray = [ ShapePrimitive.create(strokeVertices, strokeNormals, strokeTextures, indices, RDGE.globals.engine.getContext().renderer.TRIANGLES, indices.length) ];
}
var nPrims = primArray.length;
for (var i=0; i<nPrims; i++)
{
this._primArray.push( primArray[i] );
this._materialNodeArray.push( strokeMaterial.getMaterialNode() );
}
}
world.updateObject(this);
}
},
render: {
value: function() {
// get the world
var world = this.getWorld();
if (!world) throw( "null world in rectangle render" );
// get the context
var ctx = world.get2DContext();
if (!ctx) return;
// set up the stroke style
var lineWidth = this._strokeWidth,
w = this._width,
h = this._height;
var c,
gradient,
colors,
len,
n,
position,
cs;
ctx.beginPath();
ctx.lineWidth = lineWidth;
if (this._strokeColor) {
if(this._strokeColor.gradientMode) {
if(this._strokeColor.gradientMode === "radial") {
gradient = ctx.createRadialGradient(w/2, h/2, 0, w/2, h/2, Math.max(w/2, h/2));
} else {
gradient = ctx.createLinearGradient(0, h/2, w, h/2);
}
colors = this._strokeColor.color;
len = colors.length;
for(n=0; n<len; n++) {
position = colors[n].position/100;
cs = colors[n].value;
gradient.addColorStop(position, "rgba(" + cs.r + "," + cs.g + "," + cs.b + "," + cs.a + ")");
}
ctx.strokeStyle = gradient;
} else {
c = "rgba(" + 255*this._strokeColor[0] + "," + 255*this._strokeColor[1] + "," + 255*this._strokeColor[2] + "," + this._strokeColor[3] + ")";
ctx.strokeStyle = c;
}
// get the points
var p0, p1;
if(this._slope === "vertical") {
p0 = [0.5*w, 0];
p1 = [0.5*w, h];
} else if(this._slope === "horizontal") {
p0 = [0, 0.5*h];
p1 = [w, 0.5*h];
} else if(this._slope > 0) {
p0 = [this._xAdj, this._yAdj];
p1 = [w - this._xAdj, h - this._yAdj];
} else {
p0 = [this._xAdj, h - this._yAdj];
p1 = [w - this._xAdj, this._yAdj];
}
// draw the line
ctx.moveTo( p0[0], p0[1] );
ctx.lineTo( p1[0], p1[1] );
ctx.stroke();
}
}
},
collidesWithPoint: {
value: function(x, y) {
if(x < this._xOffset) return false;
if(x > (this._xOffset + this._width)) return false;
if(y < this._yOffset) return false;
if(y > (this._yOffset + this._height)) return false;
return true;
}
}
});