Added Flag material

8 files changed, 437 insertions, 301 deletions

diff --git a/assets/shaders/Flag.vert.glsl b/assets/shaders/Flag.vert.glsl
index 9da0ee1c..a5e8b2f7 100644
--- a/assets/shaders/Flag.vert.glsl
+++ b/assets/shaders/Flag.vert.glsl
@@ -27,22 +27,21 @@ uniform mat4 u_worldMatrix;
 // varying variables
 varying vec2 v_uv;
 
+
 void main()
 {
-    float pi = 3.14159;
-        float angle = mod(u_time, pi)*2.0;
+        float pi = 3.14159;
+        float angle = u_time;
 
-    vec3 v = a_pos;
     v_uv = texcoord;
 
-    vec2 pos = texcoord;
-    float tmp = pos.x;  pos.x = pos.y;  pos.y = tmp;
-    pos.x = pos.x * 1.0*pi * u_waveWidth;
-    pos.y = pos.y * 1.0*pi * u_waveWidth;
+        float x = 2.0*pi*texcoord.x/u_waveWidth;
+        float y = 2.0*pi*texcoord.y;
 
-        v.z  = sin( pos.x + angle);
-        v.z += sin( pos.y/2.0 + angle);
-        v.z *= v.y * 0.09 * u_waveHeight;
+    vec3 v = a_pos;
+        v.z  = sin( x + angle ) - 2.0*u_waveHeight;
+        v.z += sin( 0.2*y + angle);
+        v.z *= x * 0.09 * u_waveHeight;
         
     gl_Position = u_projMatrix * u_mvMatrix * vec4(v,1.0) ;
 }
diff --git a/js/lib/geom/rectangle.js b/js/lib/geom/rectangle.js
index e511d5f4..51947ff1 100755
--- a/js/lib/geom/rectangle.js
+++ b/js/lib/geom/rectangle.js
@@ -943,13 +943,13 @@ RectangleFill.create = function( rectCtr,  width, height, tlRad, blRad,  brRad,
         }
 
         //refine the mesh for vertex deformations
-//      if (material) {
-//              if (material.hasVertexDeformation()) {
-//                      var paramRange = material.getVertexDeformationRange();
-//                      var tolerance = material.getVertexDeformationTolerance();
-//                      nVertices = ShapePrimitive.refineMesh( this.vertices, this.normals, this.uvs, this.indices, nVertices,  paramRange,  tolerance );
-//              }
-//      }
+        if (material) {
+                if (material.hasVertexDeformation()) {
+                        var paramRange = material.getVertexDeformationRange();
+                        var tolerance = material.getVertexDeformationTolerance();
+                        nVertices = ShapePrimitive.refineMesh( this.vertices, this.normals, this.uvs, this.indices, nVertices,  paramRange,  tolerance );
+                }
+        }
 
         // create the RDGE primitive
         return ShapePrimitive.create(this.vertices, this.normals, this.uvs, this.indices, g_Engine.getContext().renderer.TRIANGLES, nVertices);
@@ -1175,13 +1175,13 @@ RectangleStroke.create = function( rectCtr,  width, height, strokeWidth,  tlRad,
         }
 
         //refine the mesh for vertex deformations
-//      if (material) {
-//              if (material.hasVertexDeformation()) {
-//                      var paramRange = material.getVertexDeformationRange();
-//                      var tolerance = material.getVertexDeformationTolerance();
-//                      nVertices = ShapePrimitive.refineMesh( this.vertices, this.normals, this.uvs, this.indices, nVertices,  paramRange,  tolerance );
-//              }
-//      }
+        if (material) {
+                if (material.hasVertexDeformation()) {
+                        var paramRange = material.getVertexDeformationRange();
+                        var tolerance = material.getVertexDeformationTolerance();
+                        nVertices = ShapePrimitive.refineMesh( this.vertices, this.normals, this.uvs, this.indices, nVertices,  paramRange,  tolerance );
+                }
+        }
 
         // create the RDGE primitive
         return ShapePrimitive.create(this.vertices, this.normals, this.uvs, this.indices, g_Engine.getContext().renderer.TRIANGLES, nVertices);
@@ -1259,15 +1259,15 @@ RectangleGeometry.create = function( ctr,  width, height, material ) {
         RectangleGeometry.pushIndices( 0, 3, 2 );
 
         //refine the mesh for vertex deformations
-//      if (material)
-//      {
-//              if (material.hasVertexDeformation())
-//              {
-//                      var paramRange = material.getVertexDeformationRange();
-//                      var tolerance = material.getVertexDeformationTolerance();
-//                      nVertices = ShapePrimitive.refineMesh( this.vertices, this.normals, this.uvs, this.indices, nVertices,  paramRange,  tolerance );
-//              }
-//      }
+        if (material)
+        {
+                if (material.hasVertexDeformation())
+                {
+                        var paramRange = material.getVertexDeformationRange();
+                        var tolerance = material.getVertexDeformationTolerance();
+                        nVertices = ShapePrimitive.refineMesh( this.vertices, this.normals, this.uvs, this.indices, nVertices,  paramRange,  tolerance );
+                }
+        }
 
         // create the RDGE primitive
         return ShapePrimitive.create(this.vertices, this.normals, this.uvs, this.indices, g_Engine.getContext().renderer.TRIANGLES, nVertices);
diff --git a/js/lib/geom/shape-primitive.js b/js/lib/geom/shape-primitive.js
index bf0087b2..44a7aa52 100644
--- a/js/lib/geom/shape-primitive.js
+++ b/js/lib/geom/shape-primitive.js
@@ -49,6 +49,136 @@ ShapePrimitive.create = function(coords,  normals,  uvs,  indices, primType, ver
         return prim;
 };
 
+ShapePrimitive.getMeshBounds = function( verts,  nVerts )
+{
+        if (!verts || (nVerts <= 0))  return null;
+
+        var bounds = [verts[0], verts[1], verts[2],  verts[0], verts[1], verts[2]];
+        var index = 3;
+        for (var i=1;  i<nVerts;  i++)
+        {
+                var x = verts[index],  y = verts[index+1],  z = verts[index+2];
+                index += 3;
+
+                if      (x < bounds[0])  bounds[0] = x;
+                else if (x > bounds[3])  bounds[3] = x;
+                if      (y < bounds[1])  bounds[1] = y;
+                else if (y > bounds[4])  bounds[4] = y;
+                if      (z < bounds[2])  bounds[2] = z;
+                else if (z > bounds[5])  bounds[5] = z;
+        }
+
+        return bounds;
+};
+
+ShapePrimitive.refineMesh = function( verts, norms, uvs, indices, nVertices,  paramRange,  tolerance )
+{
+        var oldVrtCount = nVertices;
+
+        // get the param range
+        var pUMin = paramRange[0],  pVMin = paramRange[1],
+                pUMax = paramRange[2],  pVMax = paramRange[3];
+        var iTriangle = 0;
+        var nTriangles = indices.length/3;
+        var index = 0;
+        while (iTriangle < nTriangles)
+        {
+                // get the indices of the 3 vertices
+                var i0 = indices[index],
+                        i1 = indices[index+1],
+                        i2 = indices[index+2];
+
+                // get the uv values
+                //var vrtIndex = 3*iTriangle;
+                var iuv0 = 2 * i0,
+                        iuv1 = 2 * i1,
+                        iuv2 = 2 * i2;
+                var u0 = uvs[iuv0],  v0 = uvs[iuv0+1],
+                        u1 = uvs[iuv1],  v1 = uvs[iuv1+1],
+                        u2 = uvs[iuv2],  v2 = uvs[iuv2+1];
+
+                // find the u and v range
+                var uMin = u0,  vMin = v0;
+                if (u1 < uMin)  uMin = u1;  if (v1 < vMin)  vMin = v1;
+                if (u2 < uMin)  uMin = u2;  if (v2 < vMin)  vMin = v2;
+                var uMax = u0,  vMax = v0;
+                if (u1 > uMax)  uMax = u1;  if (v1 > vMax)  vMax = v1;
+                if (u2 > uMax)  uMax = u2;  if (v2 > vMax)  vMax = v2;
+
+                // if the parameter range of the triangle is outside the
+                // desired parameter range, advance to the next polygon and continue
+                if ((uMin > pUMax) || (uMax < pUMin) || (vMin > pVMax) || (vMax < pVMin))
+                {
+                        // go to the next triangle
+                        iTriangle++;
+                        index += 3;
+                }
+                else
+                {
+                        // check thesize of the triangle in uv space.  If small enough, advance
+                        // to the next triangle.  If not small enough, split the triangle into 3;
+                        var du = uMax - uMin,  dv = vMax - vMin;
+                        if ((du < tolerance) && (dv < tolerance))
+                        {
+                                iTriangle++;
+                                index += 3;
+                        }
+                        else    // split the triangle into 4 parts
+                        {
+                                //calculate the position of the new vertex
+                                var iPt0 = 3 * i0,
+                                        iPt1 = 3 * i1,
+                                        iPt2 = 3 * i2;
+                                var x0 = verts[iPt0],  y0 = verts[iPt0+1],  z0 = verts[iPt0+2],
+                                        x1 = verts[iPt1],  y1 = verts[iPt1+1],  z1 = verts[iPt1+2],
+                                        x2 = verts[iPt2],  y2 = verts[iPt2+1],  z2 = verts[iPt2+2];
+                                
+                                // calculate the midpoints of the edges
+                                var xA = (x0 + x1)/2.0,  yA = (y0 + y1)/2.0,  zA = (z0 + z1)/2.0,
+                                        xB = (x1 + x2)/2.0,  yB = (y1 + y2)/2.0,  zB = (z1 + z2)/2.0,
+                                        xC = (x2 + x0)/2.0,  yC = (y2 + y0)/2.0,  zC = (z2 + z0)/2.0;
+
+                                // calculate the uv values of the new coordinates
+                                var uA = (u0 + u1)/2.0,  vA = (v0 + v1)/2.0,
+                                        uB = (u1 + u2)/2.0,  vB = (v1 + v2)/2.0,
+                                        uC = (u2 + u0)/2.0,  vC = (v2 + v0)/2.0;
+
+                                // calculate the normals for the new points
+                                var nx0 = norms[iPt0],  ny0 = norms[iPt0+1],  nz0 = norms[iPt0+2],
+                                        nx1 = norms[iPt1],  ny1 = norms[iPt1+1],  nz1 = norms[iPt1+2],
+                                        nx2 = norms[iPt2],  ny2 = norms[iPt2+1],  nz2 = norms[iPt2+2];
+                                var nxA = (nx0 + nx1),  nyA = (ny0 + ny1),  nzA = (nz0 + nz1);  var nrmA = VecUtils.vecNormalize(3, [nxA, nyA, nzA], 1.0 ),
+                                        nxB = (nx1 + nx2),  nyB = (ny1 + ny2),  nzB = (nz1 + nz2);  var nrmB = VecUtils.vecNormalize(3, [nxB, nyB, nzB], 1.0 ),
+                                        nxC = (nx2 + nx0),  nyC = (ny2 + ny0),  nzC = (nz2 + nz0);  var nrmC = VecUtils.vecNormalize(3, [nxC, nyC, nzC], 1.0 );
+