add more imgui functions

scripts/geometry.js

@@ -68,4 +68,14 @@ shape.circle.points = function(radius, n) {
   return shape.arc(radius, 360, n);
 };
 
+shape.corners2points = function(ll, ur)
+{
+  return [
+    ll,
+    ll.add([ur.x,0]),
+    ur,
+    ll.add([0,ur.y]),
+  ];
+}
+
 return {shape};

scripts/render.js

@@ -677,12 +677,16 @@ function flush_poly()
 }
 
 render.line = function render_line(points, color = Color.white, thickness = 1) {
+  for (var i = 0; i < points.length-1; i++) {
+    var a = points[i];
+    var b = points[i+1];
     var poly = poly_e();
-  var dist = vector.distance(points[0],points[1]);
+    var dist = vector.distance(a,b);
-  poly.transform.move(vector.midpoint(points[0],points[1]));
+    poly.transform.move(vector.midpoint(a,b));
-  poly.transform.rotate([0,0,-1], vector.angle([points[1].x-points[0].x, points[1].y-points[0].y]));
+    poly.transform.rotate([0,0,-1], vector.angle([b.x-a.x, b.y-a.y]));
     poly.transform.scale = [dist, thickness, 1];
     poly.color = color;
+  }
   check_flush(flush_poly);
 }
 

source/engine/gui.cpp

@@ -137,6 +137,14 @@ JSC_CCALL(imgui_sameline,
   ImGui::SameLine();
 )
 
+JSC_SCALL(imgui_columns,
+  ImGui::Columns(js2number(argv[1]), str);
+)
+
+JSC_CCALL(imgui_nextcolumn,
+  ImGui::NextColumn();
+)
+
 static const JSCFunctionListEntry js_imgui_funcs[] = {
   MIST_FUNC_DEF(imgui, window, 2),
   MIST_FUNC_DEF(imgui, menu, 2),
@@ -155,6 +163,8 @@ static const JSCFunctionListEntry js_imgui_funcs[] = {
   MIST_FUNC_DEF(imgui, plot,1),
   MIST_FUNC_DEF(imgui,lineplot,2),
   MIST_FUNC_DEF(imgui, sokol_gfx, 0),
+  MIST_FUNC_DEF(imgui, columns, 2),
+  MIST_FUNC_DEF(imgui, nextcolumn, 0),
 };
 
 static int started = 0;