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Mesh3d cell data checks #3369

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Merged
merged 16 commits into from
Jan 7, 2019
Merged

Mesh3d cell data checks #3369

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12f3e1f
removed indices convert
archmoj Dec 21, 2018
33e2b9a
if no indices then trace visible to false
archmoj Dec 21, 2018
f1772a2
check for vertex data only
archmoj Dec 21, 2018
e531e4e
Merge remote-tracking branch 'origin/master' into 2630-mesh3d-dont-mo…
archmoj Jan 3, 2019
65a5806
revised code after 1st review 3369
archmoj Jan 3, 2019
e97f5ed
improved condition checks and added jasmine tests for mesh3d
archmoj Jan 3, 2019
55e5e12
added more logic
archmoj Jan 3, 2019
79deeae
revert optional deps
archmoj Jan 3, 2019
bf51940
fixed syntax
archmoj Jan 3, 2019
83060bc
using loops instead of map in mesh3d convert
archmoj Jan 4, 2019
a041e51
moved certain condition checks to convert step
archmoj Jan 4, 2019
2b54f14
pass 2 removed some extra checks
archmoj Jan 4, 2019
a9ab05f
fixed jasmine tests to also check for position and cell data
archmoj Jan 4, 2019
ec502ee
improved jasmine tests and -0.49 > 0 round edge case
archmoj Jan 4, 2019
fadce01
traceIn > traceOut and more jasmine tests
archmoj Jan 7, 2019
29f5a06
must have tested traceOut after coerce fix
archmoj Jan 7, 2019
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97 changes: 72 additions & 25 deletions src/traces/mesh3d/convert.js
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,53 @@ proto.handlePick = function(selection) {
};

function parseColorArray(colors) {
return colors.map(str2RgbaArray);
var b = [];
var len = colors.length;
for(var i = 0; i < len; i++) {
b[i] = str2RgbaArray(colors[i]);
}
return b;
}

// Unpack position data
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@etpinard wondering where could these functions go if we want to reuse these functions in other places e.g. in iso-surfaces?

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I'd vote for putting helper functions like this one in a new file src/traces/mesh3d/helpers.js.

function toDataCoords(axis, coord, scale, calendar) {
var b = [];
var len = coord.length;
for(var i = 0; i < len; i++) {
b[i] = axis.d2l(coord[i], 0, calendar) * scale;
}
return b;
}

// Round indices if passed as floats
function toRoundIndex(a) {
var b = [];
var len = a.length;
for(var i = 0; i < len; i++) {
b[i] = Math.round(a[i]);
}
return b;
}

function delaunayCells(delaunayaxis, positions) {
var d = ['x', 'y', 'z'].indexOf(delaunayaxis);
var b = [];
var len = positions.length;
for(var i = 0; i < len; i++) {
b[i] = [positions[i][(d + 1) % 3], positions[i][(d + 2) % 3]];
}
return triangulate(b);
}

// Validate indices
function hasValidIndices(list, numVertices) {
var len = list.length;
for(var i = 0; i < len; i++) {
if(list[i] < 0 || list[i] >= numVertices) {
return false;
}
}
return true;
}

proto.update = function(data) {
Expand All @@ -61,33 +107,37 @@ proto.update = function(data) {

this.data = data;

// Unpack position data
function toDataCoords(axis, coord, scale, calendar) {
return coord.map(function(x) {
return axis.d2l(x, 0, calendar) * scale;
});
}
var numVertices = data.x.length;

var positions = zip3(
toDataCoords(layout.xaxis, data.x, scene.dataScale[0], data.xcalendar),
toDataCoords(layout.yaxis, data.y, scene.dataScale[1], data.ycalendar),
toDataCoords(layout.zaxis, data.z, scene.dataScale[2], data.zcalendar));
toDataCoords(layout.zaxis, data.z, scene.dataScale[2], data.zcalendar)
);

var cells;
if(data.i && data.j && data.k) {
cells = zip3(data.i, data.j, data.k);
}
else if(data.alphahull === 0) {

if(
data.i.length !== data.j.length ||
data.j.length !== data.k.length ||
!hasValidIndices(data.i, numVertices) ||
!hasValidIndices(data.j, numVertices) ||
!hasValidIndices(data.k, numVertices)
) {
return;
}
cells = zip3(
toRoundIndex(data.i),
toRoundIndex(data.j),
toRoundIndex(data.k)
);
} else if(data.alphahull === 0) {
cells = convexHull(positions);
}
else if(data.alphahull > 0) {
} else if(data.alphahull > 0) {
cells = alphaShape(data.alphahull, positions);
}
else {
var d = ['x', 'y', 'z'].indexOf(data.delaunayaxis);
cells = triangulate(positions.map(function(c) {
return [c[(d + 1) % 3], c[(d + 2) % 3]];
}));
} else {
cells = delaunayCells(data.delaunayaxis, positions);
}

var config = {
Expand All @@ -113,16 +163,13 @@ proto.update = function(data) {
config.vertexIntensity = data.intensity;
config.vertexIntensityBounds = [data.cmin, data.cmax];
config.colormap = parseColorScale(data.colorscale);
}
else if(data.vertexcolor) {
} else if(data.vertexcolor) {
this.color = data.vertexcolor[0];
config.vertexColors = parseColorArray(data.vertexcolor);
}
else if(data.facecolor) {
} else if(data.facecolor) {
this.color = data.facecolor[0];
config.cellColors = parseColorArray(data.facecolor);
}
else {
} else {
this.color = data.color;
config.meshColor = str2RgbaArray(data.color);
}
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16 changes: 9 additions & 7 deletions src/traces/mesh3d/defaults.js
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Original file line number Diff line number Diff line change
Expand Up @@ -34,19 +34,21 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
}

var coords = readComponents(['x', 'y', 'z']);
var indices = readComponents(['i', 'j', 'k']);

if(!coords) {
traceOut.visible = false;
return;
}

if(indices) {
// otherwise, convert all face indices to ints
indices.forEach(function(index) {
for(var i = 0; i < index.length; ++i) index[i] |= 0;
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Hmm. So you didn't move this to mesh3d/convert.js? Just 🔪 ing it didn't break any tests?

Can you try plotting a mesh3d trace with non-integer indices and see what happens?

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@etpinard Thanks for the review.
That's true! One could get bad errors in case of having non-integer ids.
So, in the revised code I added map functions to round the float values to integers.
However; there is now extra logic to check and handle for such cases. A series of jasmine tests are also added to define the expected behaviour in various scenarios.

});
// three indices should be all provided or not
if(
(traceIn.i && (!traceIn.j || !traceIn.k)) ||
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Ha, you're using traceIn here. So something like

{
  i: 1,
  j: true,
  k: {}
}

would have visible:true.

Could we be more stringent and use traceOut instead, to ensure that i,j,k are all non-empty arrays.

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Good Call. Now traceOut is applied.
Noting that visible would "only" be false in case of bad 'vertices'.

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Hmm. I don't understand traceOut.i, traceOut.j and traceOut.k should be defined at this stage. They get filled in during the coerce() calls in readComponents below.

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You are right. That is fixed in 29f5a06
Now the traces become invisible in case of bad index arrays.

(traceIn.j && (!traceIn.k || !traceIn.i)) ||
(traceIn.k && (!traceIn.i || !traceIn.j))
) {
traceOut.visible = false;
return;
}
readComponents(['i', 'j', 'k']);

var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
handleCalendarDefaults(traceIn, traceOut, ['x', 'y', 'z'], layout);
Expand Down
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