From 6817c66ccaea14e8308e68e54f4ea0da94f6b0ca Mon Sep 17 00:00:00 2001
From: Val Erastov <xibyte@gmail.com>
Date: Fri, 15 Feb 2019 19:40:30 -0800
Subject: [PATCH] implement 'surface gauge' for asserting the cad scene

---
 web/app/cad/tpi/tpi.js         |  5 ++++-
 web/test/utils/surfaceGauge.js | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 web/test/utils/surfaceGauge.js

diff --git a/web/app/cad/tpi/tpi.js b/web/app/cad/tpi/tpi.js
index 4e7c5b61..e607e067 100644
--- a/web/app/cad/tpi/tpi.js
+++ b/web/app/cad/tpi/tpi.js
@@ -15,6 +15,7 @@ import {Plane} from '../../brep/geom/impl/plane';
 import pip from '../tess/pip';
 import {readShellEntityFromJson} from '../scene/wrappers/entityIO';
 import * as vec from '../../math/vec'
+import NurbsSurface from '../../brep/geom/surfaces/nurbsSurface';
 
 
 export default {
@@ -26,7 +27,9 @@ export default {
     pip,
     validator: BREPValidator,
     geom: {
-      Point, BrepCurve, Plane, createBoundingSurface
+      Point, BrepCurve, 
+      Plane, createBoundingSurface,
+      NurbsSurface
     },
     topo: {
       Edge, Loop, Face, Shell, Vertex
diff --git a/web/test/utils/surfaceGauge.js b/web/test/utils/surfaceGauge.js
new file mode 100644
index 00000000..5a32588a
--- /dev/null
+++ b/web/test/utils/surfaceGauge.js
@@ -0,0 +1,33 @@
+import * as vec from '../../app/math/math'
+import {assertFaceOrigination, assertFaceRole} from './asserts';
+
+export class SurfaceGauge {
+  
+  constructor(surface, rayCast) {
+    this.surface = surface;
+    this.rayCast = rayCast;
+  }
+  
+  sample(u, v, delta = 10) {
+    let normal = this.surface.normal(u, v);
+    let pt = this.surface.point(u, v);
+    let deltaV = vec.mul(normal, delta);
+    let [face] = ui.rayCastFaces(vec.add(pt, deltaV), vec.sub(pt, deltaV));
+    let sampleAssertations = {
+      assertFaceOrigination: (sketchId, primitiveId) => {
+        assertFaceOrigination(face, sketchId, primitiveId);
+        return sampleAssertations;
+      },
+      assertFaceRole: role => {
+        assertFaceRole(face, role);
+        return sampleAssertations
+      }
+    }
+  }
+  
+  static prism(surfaceImpl, a, b, c, d) {
+    return new SurfaceGauge(surfaceImpl(1, 1, [0,0,1,1], [0,0,1,1],
+      [ [ a, b] ,
+        [ c, d ] ] ));
+  }
+}
\ No newline at end of file