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4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 5x 5x 5x 5x 5x 5x 5x 5x 5x 4x 5x 5x 5x 5x 5x 5x 5x 5x 1x | import * as d3 from 'd3-scale';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import macro from 'vtk.js/Sources/macros';
import vtkActor from 'vtk.js/Sources/Rendering/Core/Actor';
import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray';
import vtkScalarsToColors from 'vtk.js/Sources/Common/Core/ScalarsToColors';
import vtkMapper from 'vtk.js/Sources/Rendering/Core/Mapper';
import vtkPolyData from 'vtk.js/Sources/Common/DataModel/PolyData';
import vtkTexture from 'vtk.js/Sources/Rendering/Core/Texture';
const { VectorMode } = vtkScalarsToColors;
// ----------------------------------------------------------------------------
// vtkScalarBarActor
//
// Note log scales are currently not supported
//
// Developer note: This class is broken into the main class and a helper
// class. The main class holds view independent properties (those properties
// that do not change as the view's resolution/aspect ratio change). The
// helper class is instantiated one per view and holds properties that can
// depend on view specific values such as resolution. The helper class code
// could have been left to the View specific implementation (such as
// vtkWebGPUScalarBarActor) but is instead placed here to it can be shared by
// multiple rendering backends.
//
// ----------------------------------------------------------------------------
function applyTextStyle(ctx, style) {
ctx.strokeStyle = style.strokeColor;
ctx.lineWidth = style.strokeSize;
ctx.fillStyle = style.fontColor;
ctx.font = `${style.fontStyle} ${style.fontSize}px ${style.fontFamily}`;
}
// ----------------------------------------------------------------------------
// Default autoLayout function
// ----------------------------------------------------------------------------
// compute good values to use based on window size etc a bunch of heuristics
// here with hand tuned constants These values worked for me but really this
// method could be redically changed. The basic gist is
// 1) compute a resonable font size
// 2) render the text atlas using those font sizes
// 3) pick horizontal or vertical bsed on window size
// 4) based on the size of the title and tick labels rendered
// compute the box size and position such that
// the text will all fit nicely and the bar will be a resonable size
// 5) compute the bar segments based on the above settings
//
// Note that this function can and should read values from the
// ScalarBarActor but should only write values to the view dependent helper
// instance that is provided as those values are the ones that will be used
// for rendering.
//
function defaultAutoLayout(publicAPI, model) {
return (helper) => {
// we don't do a linear scale, the proportions for
// a 700 pixel window differ from a 1400
const lastSize = helper.getLastSize();
const xAxisAdjust = (lastSize[0] / 700) ** 0.8;
const yAxisAdjust = (lastSize[1] / 700) ** 0.8;
const minAdjust = Math.min(xAxisAdjust, yAxisAdjust);
const axisTextStyle = helper.getAxisTextStyle();
const tickTextStyle = helper.getTickTextStyle();
Object.assign(axisTextStyle, model.axisTextStyle);
Object.assign(tickTextStyle, model.tickTextStyle);
// compute a reasonable font size first
axisTextStyle.fontSize = Math.max(24 * minAdjust, 12);
if (helper.getLastAspectRatio() > 1.0) {
tickTextStyle.fontSize = Math.max(20 * minAdjust, 10);
} else E{
tickTextStyle.fontSize = Math.max(16 * minAdjust, 10);
}
// rebuild the text atlas
const textSizes = helper.updateTextureAtlas();
// now compute the boxSize and pixel offsets, different algorithm
// for horizonal versus vertical
helper.setTopTitle(false);
const boxSize = helper.getBoxSizeByReference();
// if vertical
if (helper.getLastAspectRatio() > 1.0) {
helper.setTickLabelPixelOffset(0.3 * tickTextStyle.fontSize);
// if the title will fit within the width of the bar then that looks
// nicer to put it at the top (helper.topTitle), otherwise rotate it
// and place it sideways
Iif (
textSizes.titleWidth <=
textSizes.tickWidth +
helper.getTickLabelPixelOffset() +
0.8 * tickTextStyle.fontSize
) {
helper.setTopTitle(true);
helper.setAxisTitlePixelOffset(0.2 * tickTextStyle.fontSize);
boxSize[0] =
(2.0 *
(textSizes.tickWidth +
helper.getTickLabelPixelOffset() +
0.8 * tickTextStyle.fontSize)) /
lastSize[0];
helper.setBoxPosition([0.98 - boxSize[0], -0.92]);
} else {
helper.setAxisTitlePixelOffset(0.2 * tickTextStyle.fontSize);
boxSize[0] =
(2.0 *
(textSizes.titleHeight +
helper.getAxisTitlePixelOffset() +
textSizes.tickWidth +
helper.getTickLabelPixelOffset() +
0.8 * tickTextStyle.fontSize)) /
lastSize[0];
helper.setBoxPosition([0.99 - boxSize[0], -0.92]);
}
boxSize[1] = Math.max(1.2, Math.min(1.84 / yAxisAdjust, 1.84));
} else E{
// horizontal
helper.setAxisTitlePixelOffset(1.2 * tickTextStyle.fontSize);
helper.setTickLabelPixelOffset(0.1 * tickTextStyle.fontSize);
const titleHeight = // total offset from top of bar (includes ticks)
(2.0 *
(0.8 * tickTextStyle.fontSize +
textSizes.titleHeight +
helper.getAxisTitlePixelOffset())) /
lastSize[1];
const tickWidth = (2.0 * textSizes.tickWidth) / lastSize[0];
boxSize[0] = Math.min(
1.9,
Math.max(1.4, 1.4 * tickWidth * (helper.getTicks().length + 3))
);
boxSize[1] = titleHeight;
helper.setBoxPosition([-0.5 * boxSize[0], -0.97]);
}
// recomute bar segments based on positioning
helper.recomputeBarSegments(textSizes);
};
}
// ----------------------------------------------------------------------------
// Default generateTicks function
// ----------------------------------------------------------------------------
// This function returns the default function used to generate vtkScalarBarActor ticks.
// The default function makes use of d3.scaleLinear() to generate 5 tick marks between
// the minimum and maximum values of the scalar bar. Customize this behavior by passing
// a function to vtkScalarBarActor.newInstance({ generateTicks: customGenerateTicks })
// or by calling scalarBarActor.setGenerateTicks(customGenerateTicks).
function defaultGenerateTicks(publicApi, model) {
return (helper) => {
const lastTickBounds = helper.getLastTickBounds();
const scale = d3
.scaleLinear()
.domain([lastTickBounds[0], lastTickBounds[1]]);
const ticks = scale.ticks(5);
const format = scale.tickFormat(5);
helper.setTicks(ticks);
helper.setTickStrings(ticks.map(format));
};
}
// many properties of this actor depend on the API specific view The main
// dependency being the resolution as that drives what font sizes to use.
// Bacause of this we need to do some of the calculations in a API specific
// subclass. But... we don't want a lot of duplicated code between WebGL and
// WebGPU for example so we have this helper class, that is designed to be
// fairly API independent so that API specific views can call this to do
// most of the work.
function vtkScalarBarActorHelper(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkScalarBarActorHelper');
publicAPI.setRenderable = (renderable) => {
Iif (model.renderable === renderable) {
return;
}
model.renderable = renderable;
model.barActor.setProperty(renderable.getProperty());
model.barActor.setParentProp(renderable);
model.barActor.setCoordinateSystemToDisplay();
model.tmActor.setProperty(renderable.getProperty());
model.tmActor.setParentProp(renderable);
model.tmActor.setCoordinateSystemToDisplay();
model.generateTicks = renderable.generateTicks;
model.axisTextStyle = { ...renderable.getAxisTextStyle() };
model.tickTextStyle = { ...renderable.getTickTextStyle() };
publicAPI.modified();
};
publicAPI.updateAPISpecificData = (size, camera, renderWindow) => {
// has the size changed?
if (model.lastSize[0] !== size[0] || model.lastSize[1] !== size[1]) {
model.lastSize[0] = size[0];
model.lastSize[1] = size[1];
model.lastAspectRatio = size[0] / size[1];
model.forceUpdate = true;
}
const scalarsToColors = model.renderable.getScalarsToColors();
Iif (!scalarsToColors || !model.renderable.getVisibility()) {
return;
}
// make sure the lut is assigned to our mapper
model.barMapper.setLookupTable(scalarsToColors);
// camera should be the same for all views
model.camera = camera;
model.renderWindow = renderWindow;
// did something significant change? If so rebuild a lot of things
if (
model.forceUpdate ||
Math.max(
scalarsToColors.getMTime(),
publicAPI.getMTime(),
model.renderable.getMTime()
) > model.lastRebuildTime.getMTime()
) {
const range = scalarsToColors.getMappingRange();
model.lastTickBounds = [...range];
// compute tick marks for axes (update for log scale)
model.renderable.getGenerateTicks()(publicAPI);
if (model.renderable.getAutomated()) {
model.renderable.getAutoLayout()(publicAPI);
} else {
// copy values from renderable
model.axisTextStyle = { ...model.renderable.getAxisTextStyle() };
model.tickTextStyle = { ...model.renderable.getTickTextStyle() };
model.barPosition = [...model.renderable.getBarPosition()];
model.barSize = [...model.renderable.getBarSize()];
model.boxPosition = [...model.renderable.getBoxPosition()];
model.boxSize = [...model.renderable.getBoxSize()];
model.axisTitlePixelOffset = model.renderable.getAxisTitlePixelOffset();
model.tickLabelPixelOffset = model.renderable.getTickLabelPixelOffset();
// rebuild the texture only when force or changed bounds, face
// visibility changes do to change the atlas
const textSizes = publicAPI.updateTextureAtlas();
// recompute bar segments based on positioning
publicAPI.recomputeBarSegments(textSizes);
}
publicAPI.updatePolyDataForLabels();
publicAPI.updatePolyDataForBarSegments();
model.lastRebuildTime.modified();
model.forceUpdate = false;
}
};
// create the texture map atlas that contains the rendering of
// all the text strings. Only needs to be called when the text strings
// have changed (labels and ticks)
publicAPI.updateTextureAtlas = () => {
// set the text properties
model.tmContext.textBaseline = 'bottom';
model.tmContext.textAlign = 'left';
// return some factors about the text atlas
const results = {};
// first the axislabel
const newTmAtlas = new Map();
let maxWidth = 0;
let totalHeight = 1; // start one pixel in so we have a border
applyTextStyle(model.tmContext, model.axisTextStyle);
let metrics = model.tmContext.measureText(model.renderable.getAxisLabel());
let entry = {
height: metrics.actualBoundingBoxAscent + 2,
startingHeight: totalHeight,
width: metrics.width + 2,
textStyle: model.axisTextStyle,
};
newTmAtlas.set(model.renderable.getAxisLabel(), entry);
totalHeight += entry.height;
maxWidth = entry.width;
results.titleWidth = entry.width;
results.titleHeight = entry.height;
// and the ticks, NaN Below and Above
results.tickWidth = 0;
results.tickHeight = 0;
applyTextStyle(model.tmContext, model.tickTextStyle);
const strings = [...publicAPI.getTickStrings(), 'NaN', 'Below', 'Above'];
for (let t = 0; t < strings.length; t++) {
if (!newTmAtlas.has(strings[t])) {
metrics = model.tmContext.measureText(strings[t]);
entry = {
height: metrics.actualBoundingBoxAscent + 2,
startingHeight: totalHeight,
width: metrics.width + 2,
textStyle: model.tickTextStyle,
};
newTmAtlas.set(strings[t], entry);
totalHeight += entry.height;
Iif (maxWidth < entry.width) {
maxWidth = entry.width;
}
if (results.tickWidth < entry.width) {
results.tickWidth = entry.width;
}
if (results.tickHeight < entry.height) {
results.tickHeight = entry.height;
}
}
}
// always use power of two to avoid interpolation
// in cases where PO2 is required
maxWidth = vtkMath.nearestPowerOfTwo(maxWidth);
totalHeight = vtkMath.nearestPowerOfTwo(totalHeight);
// set the tcoord values
newTmAtlas.forEach((value) => {
value.tcoords = [
0.0,
(totalHeight - value.startingHeight - value.height) / totalHeight,
value.width / maxWidth,
(totalHeight - value.startingHeight - value.height) / totalHeight,
value.width / maxWidth,
(totalHeight - value.startingHeight) / totalHeight,
0.0,
(totalHeight - value.startingHeight) / totalHeight,
];
});
// make sure we have power of two dimensions
model.tmCanvas.width = maxWidth;
model.tmCanvas.height = totalHeight;
model.tmContext.textBaseline = 'bottom';
model.tmContext.textAlign = 'left';
model.tmContext.clearRect(0, 0, maxWidth, totalHeight);
// draw the text onto the texture
newTmAtlas.forEach((value, key) => {
applyTextStyle(model.tmContext, value.textStyle);
model.tmContext.fillText(key, 1, value.startingHeight + value.height - 1);
});
model.tmTexture.setCanvas(model.tmCanvas);
// mark as modified since the canvas typically doesn't change
model.tmTexture.modified();
model._tmAtlas = newTmAtlas;
return results;
};
publicAPI.computeBarSize = (textSizes) => {
// compute orientation
model.vertical = model.boxSize[1] > model.boxSize[0];
const tickHeight = (2.0 * textSizes.tickHeight) / model.lastSize[1];
const segSize = [1, 1];
// horizontal and vertical have different astetics so adjust based on
// orientation
if (model.vertical) {
const tickWidth =
(2.0 * (textSizes.tickWidth + model.tickLabelPixelOffset)) /
model.lastSize[0];
Iif (model.topTitle) {
const titleHeight =
(2.0 * (textSizes.titleHeight + model.axisTitlePixelOffset)) /
model.lastSize[1];
model.barSize[0] = model.boxSize[0] - tickWidth;
model.barSize[1] = model.boxSize[1] - titleHeight;
} else {
// rotated title so width is based off height
const titleWidth =
(2.0 * (textSizes.titleHeight + model.axisTitlePixelOffset)) /
model.lastSize[0];
model.barSize[0] = model.boxSize[0] - titleWidth - tickWidth;
model.barSize[1] = model.boxSize[1];
}
model.barPosition[0] = model.boxPosition[0] + tickWidth;
model.barPosition[1] = model.boxPosition[1];
segSize[1] = tickHeight;
} else {
const tickWidth = (2.0 * textSizes.tickWidth - 8) / model.lastSize[0];
const titleHeight =
(2.0 * (textSizes.titleHeight + model.axisTitlePixelOffset)) /
model.lastSize[1];
model.barSize[0] = model.boxSize[0];
model.barPosition[0] = model.boxPosition[0];
model.barSize[1] = model.boxSize[1] - titleHeight;
model.barPosition[1] = model.boxPosition[1];
segSize[0] = tickWidth;
}
return segSize;
};
// based on all the settins compute a barSegments array
// containing the segments of the scalar bar
// each segment contains
// corners[4][2]
// title - e.g. NaN, Above, ticks
// scalars - the normalized scalars values to use for that segment
//
// Note that the bar consumes the space in the box that remains after
// leaving room for the text labels
publicAPI.recomputeBarSegments = (textSizes) => {
// first compute the barSize/Position
const segSize = publicAPI.computeBarSize(textSizes);
model.barSegments = [];
const startPos = [0.0, 0.0];
// horizontal and vertical have different astetics so adjust based on
// orientation
const barAxis = model.vertical ? 1 : 0;
const segSpace = model.vertical ? 0.01 : 0.02;
function pushSeg(title, scalars) {
model.barSegments.push({
corners: [
[...startPos],
[startPos[0] + segSize[0], startPos[1]],
[startPos[0] + segSize[0], startPos[1] + segSize[1]],
[startPos[0], startPos[1] + segSize[1]],
],
scalars,
title,
});
startPos[barAxis] += segSize[barAxis] + segSpace;
}
if (
model.renderable.getDrawNanAnnotation() &&
model.renderable.getScalarsToColors().getNanColor()
) {
pushSeg('NaN', [NaN, NaN, NaN, NaN]);
}
if (
model.renderable.getDrawBelowRangeSwatch() &&
model.renderable.getScalarsToColors().getUseBelowRangeColor?.()
) {
pushSeg('Below', [-0.1, -0.1, -0.1, -0.1]);
}
const haveAbove = model.renderable
.getScalarsToColors()
.getUseAboveRangeColor?.();
// extra space around the ticks section
startPos[barAxis] += segSpace;
const oldSegSize = segSize[barAxis];
segSize[barAxis] = haveAbove
? 1.0 - 2.0 * segSpace - segSize[barAxis] - startPos[barAxis]
: 1.0 - segSpace - startPos[barAxis];
pushSeg(
'ticks',
model.vertical ? [0, 0, 0.995, 0.995] : [0, 0.995, 0.995, 0]
);
if (model.renderable.getDrawAboveRangeSwatch() && haveAbove) {
segSize[barAxis] = oldSegSize;
startPos[barAxis] += segSpace;
pushSeg('Above', [1.1, 1.1, 1.1, 1.1]);
}
};
// called by updatePolyDataForLabels
// modifies class constants tmp2v3
const tmp2v3 = new Float64Array(3);
// anchor point = pos
// H alignment = left, middle, right
// V alignment = bottom, middle, top
// Text Orientation = horizontal, vertical
// orientation
publicAPI.createPolyDataForOneLabel = (
text,
pos,
alignment,
orientation,
offset,
results
) => {
const value = model._tmAtlas.get(text);
Iif (!value) {
return;
}
// have to find the four corners of the texture polygon for this label
let ptIdx = results.ptIdx;
let cellIdx = results.cellIdx;
// get achor point in pixels
tmp2v3[0] = (0.5 * pos[0] + 0.5) * model.lastSize[0];
tmp2v3[1] = (0.5 * pos[1] + 0.5) * model.lastSize[1];
tmp2v3[2] = pos[2];
tmp2v3[0] += offset[0];
tmp2v3[1] += offset[1];
// get text size in display pixels
const textSize = [];
const textAxes = orientation === 'vertical' ? [1, 0] : [0, 1];
if (orientation === 'vertical') {
textSize[0] = value.width;
textSize[1] = -value.height;
// update anchor point based on alignment
if (alignment[0] === 'middle') {
tmp2v3[1] -= value.width / 2.0;
} else Eif (alignment[0] === 'right') {
tmp2v3[1] -= value.width;
}
Iif (alignment[1] === 'middle') {
tmp2v3[0] += value.height / 2.0;
} else if (alignment[1] === 'top') {
tmp2v3[0] += value.height;
}
} else {
textSize[0] = value.width;
textSize[1] = value.height;
// update anchor point based on alignment
if (alignment[0] === 'middle') {
tmp2v3[0] -= value.width / 2.0;
} else if (alignment[0] === 'right') {
tmp2v3[0] -= value.width;
}
if (alignment[1] === 'middle') {
tmp2v3[1] -= value.height / 2.0;
} else Iif (alignment[1] === 'top') {
tmp2v3[1] -= value.height;
}
}
results.points[ptIdx * 3] = tmp2v3[0];
results.points[ptIdx * 3 + 1] = tmp2v3[1];
results.points[ptIdx * 3 + 2] = tmp2v3[2];
results.tcoords[ptIdx * 2] = value.tcoords[0];
results.tcoords[ptIdx * 2 + 1] = value.tcoords[1];
ptIdx++;
tmp2v3[textAxes[0]] += textSize[0];
results.points[ptIdx * 3] = tmp2v3[0];
results.points[ptIdx * 3 + 1] = tmp2v3[1];
results.points[ptIdx * 3 + 2] = tmp2v3[2];
results.tcoords[ptIdx * 2] = value.tcoords[2];
results.tcoords[ptIdx * 2 + 1] = value.tcoords[3];
ptIdx++;
tmp2v3[textAxes[1]] += textSize[1];
results.points[ptIdx * 3] = tmp2v3[0];
results.points[ptIdx * 3 + 1] = tmp2v3[1];
results.points[ptIdx * 3 + 2] = tmp2v3[2];
results.tcoords[ptIdx * 2] = value.tcoords[4];
results.tcoords[ptIdx * 2 + 1] = value.tcoords[5];
ptIdx++;
tmp2v3[textAxes[0]] -= textSize[0];
results.points[ptIdx * 3] = tmp2v3[0];
results.points[ptIdx * 3 + 1] = tmp2v3[1];
results.points[ptIdx * 3 + 2] = tmp2v3[2];
results.tcoords[ptIdx * 2] = value.tcoords[6];
results.tcoords[ptIdx * 2 + 1] = value.tcoords[7];
ptIdx++;
// add the two triangles to represent the quad
results.polys[cellIdx * 4] = 3;
results.polys[cellIdx * 4 + 1] = ptIdx - 4;
results.polys[cellIdx * 4 + 2] = ptIdx - 3;
results.polys[cellIdx * 4 + 3] = ptIdx - 2;
cellIdx++;
results.polys[cellIdx * 4] = 3;
results.polys[cellIdx * 4 + 1] = ptIdx - 4;
results.polys[cellIdx * 4 + 2] = ptIdx - 2;
results.polys[cellIdx * 4 + 3] = ptIdx - 1;
results.ptIdx += 4;
results.cellIdx += 2;
};
// update the polydata associated with drawing the text labels
// specifically the quads used for each label and their associated tcoords
// etc. This changes every time the camera viewpoint changes
const tmpv3 = new Float64Array(3);
publicAPI.updatePolyDataForLabels = () => {
// update the polydata
const numLabels =
publicAPI.getTickStrings().length + model.barSegments.length;
const numPts = numLabels * 4;
const numTris = numLabels * 2;
const points = new Float64Array(numPts * 3);
const polys = new Uint16Array(numTris * 4);
const tcoords = new Float32Array(numPts * 2);
const results = {
ptIdx: 0,
cellIdx: 0,
polys,
points,
tcoords,
};
// compute the direction vector
const offsetAxis = model.vertical ? 0 : 1;
const spacedAxis = model.vertical ? 1 : 0;
tmpv3[2] = -0.99; // near plane
// draw the title
const alignment = model.vertical
? ['right', 'middle']
: ['middle', 'bottom'];
let dir = [0, 1];
const tickOffsets = [0, 0];
if (model.vertical) {
tickOffsets[0] = -model.tickLabelPixelOffset;
Iif (model.topTitle) {
tmpv3[0] = model.boxPosition[0] + 0.5 * model.boxSize[0];
tmpv3[1] = model.barPosition[1] + model.barSize[1];
// write the axis label
publicAPI.createPolyDataForOneLabel(
model.renderable.getAxisLabel(),
tmpv3,
['middle', 'bottom'],
'horizontal',
[0, model.axisTitlePixelOffset],
results
);
} else {
tmpv3[0] = model.barPosition[0] + model.barSize[0];
tmpv3[1] = model.barPosition[1] + 0.5 * model.barSize[1];
// write the axis label
publicAPI.createPolyDataForOneLabel(
model.renderable.getAxisLabel(),
tmpv3,
['middle', 'top'],
'vertical',
[model.axisTitlePixelOffset, 0],
results
);
}
dir = [-1, 0];
} else {
tickOffsets[1] = model.tickLabelPixelOffset;
tmpv3[0] = model.barPosition[0] + 0.5 * model.barSize[0];
tmpv3[1] = model.barPosition[1] + model.barSize[1];
publicAPI.createPolyDataForOneLabel(
model.renderable.getAxisLabel(),
tmpv3,
['middle', 'bottom'],
'horizontal',
[0, model.axisTitlePixelOffset],
results
);
}
tmpv3[offsetAxis] =
model.barPosition[offsetAxis] +
(0.5 * dir[offsetAxis] + 0.5) * model.barSize[offsetAxis];
tmpv3[spacedAxis] =
model.barPosition[spacedAxis] + model.barSize[spacedAxis] * 0.5;
// draw bar segment labels
let tickSeg = null;
for (let i = 0; i < model.barSegments.length; i++) {
const seg = model.barSegments[i];
if (seg.title === 'ticks') {
// handle ticks below
tickSeg = seg;
} else {
tmpv3[spacedAxis] =
model.barPosition[spacedAxis] +
0.5 *
model.barSize[spacedAxis] *
(seg.corners[2][spacedAxis] + seg.corners[0][spacedAxis]);
publicAPI.createPolyDataForOneLabel(
seg.title,
tmpv3,
alignment,
'horizontal',
tickOffsets,
results
);
}
}
// write the tick labels
const tickSegmentStart =
model.barPosition[spacedAxis] +
model.barSize[spacedAxis] * tickSeg.corners[0][spacedAxis];
const tickSegmentSize =
model.barSize[spacedAxis] *
(tickSeg.corners[2][spacedAxis] - tickSeg.corners[0][spacedAxis]);
const ticks = publicAPI.getTicks();
const tickStrings = publicAPI.getTickStrings();
for (let t = 0; t < ticks.length; t++) {
const tickPos =
(ticks[t] - model.lastTickBounds[0]) /
(model.lastTickBounds[1] - model.lastTickBounds[0]);
tmpv3[spacedAxis] = tickSegmentStart + tickSegmentSize * tickPos;
publicAPI.createPolyDataForOneLabel(
tickStrings[t],
tmpv3,
alignment,
'horizontal',
tickOffsets,
results
);
}
const tcoordDA = vtkDataArray.newInstance({
numberOfComponents: 2,
values: tcoords,
name: 'TextureCoordinates',
});
model.tmPolyData.getPointData().setTCoords(tcoordDA);
model.tmPolyData.getPoints().setData(points, 3);
model.tmPolyData.getPoints().modified();
model.tmPolyData.getPolys().setData(polys, 1);
model.tmPolyData.getPolys().modified();
model.tmPolyData.modified();
};
publicAPI.updatePolyDataForBarSegments = () => {
const scalarsToColors = model.renderable.getScalarsToColors();
let numberOfExtraColors = 0;
if (
model.renderable.getDrawNanAnnotation() &&
scalarsToColors.getNanColor()
) {
numberOfExtraColors += 1;
}
if (
model.renderable.getDrawBelowRangeSwatch() &&
scalarsToColors.getUseBelowRangeColor?.()
) {
numberOfExtraColors += 1;
}
if (
model.renderable.getDrawAboveRangeSwatch() &&
scalarsToColors.getUseAboveRangeColor?.()
) {
numberOfExtraColors += 1;
}
const numPts = 4 * (1 + numberOfExtraColors);
const numQuads = numPts;
// handle vector component mode
let numComps = 1;
if (scalarsToColors.getVectorMode() === VectorMode.COMPONENT) {
numComps = scalarsToColors.getVectorComponent() + 1;
}
// create the colored bars
const points = new Float64Array(numPts * 3);
const cells = new Uint16Array(numQuads * 5);
const scalars = new Float32Array(numPts * numComps);
let ptIdx = 0;
let cellIdx = 0;
for (let i = 0; i < model.barSegments.length; i++) {
const seg = model.barSegments[i];
for (let e = 0; e < 4; e++) {
tmpv3[0] = model.barPosition[0] + seg.corners[e][0] * model.barSize[0];
tmpv3[1] = model.barPosition[1] + seg.corners[e][1] * model.barSize[1];
points[ptIdx * 3] = (0.5 * tmpv3[0] + 0.5) * model.lastSize[0];
points[ptIdx * 3 + 1] = (0.5 * tmpv3[1] + 0.5) * model.lastSize[1];
points[ptIdx * 3 + 2] = tmpv3[2];
for (let nc = 0; nc < numComps; nc++) {
scalars[ptIdx * numComps + nc] =
model.lastTickBounds[0] +
seg.scalars[e] *
(model.lastTickBounds[1] - model.lastTickBounds[0]);
}
ptIdx++;
}
cells[cellIdx * 5] = 4;
cells[cellIdx * 5 + 1] = ptIdx - 4;
cells[cellIdx * 5 + 2] = ptIdx - 3;
cells[cellIdx * 5 + 3] = ptIdx - 2;
cells[cellIdx * 5 + 4] = ptIdx - 1;
cellIdx++;
}
const scalarsDA = vtkDataArray.newInstance({
numberOfComponents: numComps,
values: scalars,
name: 'Scalars',
});
model.polyData.getPointData().setScalars(scalarsDA);
model.polyData.getPoints().setData(points, 3);
model.polyData.getPoints().modified();
model.polyData.getPolys().setData(cells, 1);
model.polyData.getPolys().modified();
model.polyData.modified();
};
}
const newScalarBarActorHelper = macro.newInstance(
(publicAPI, model, initialValues = { renderable: null }) => {
Object.assign(model, {}, initialValues);
// Inheritance
macro.obj(publicAPI, model);
macro.setGet(publicAPI, model, [
'axisTitlePixelOffset',
'tickLabelPixelOffset',
'renderable',
'topTitle',
'ticks',
'tickStrings',
]);
macro.get(publicAPI, model, [
'lastSize',
'lastAspectRatio',
'lastTickBounds',
'axisTextStyle',
'tickTextStyle',
'barActor',
'tmActor',
]);
macro.getArray(publicAPI, model, ['boxPosition', 'boxSize']);
macro.setArray(publicAPI, model, ['boxPosition', 'boxSize'], 2);
model.forceUpdate = false;
model.lastRebuildTime = {};
macro.obj(model.lastRebuildTime, { mtime: 0 });
model.lastSize = [-1, -1];
model.tmCanvas = document.createElement('canvas');
model.tmContext = model.tmCanvas.getContext('2d');
model._tmAtlas = new Map();
model.barMapper = vtkMapper.newInstance();
model.barMapper.setInterpolateScalarsBeforeMapping(true);
model.barMapper.setUseLookupTableScalarRange(true);
model.polyData = vtkPolyData.newInstance();
model.barMapper.setInputData(model.polyData);
model.barActor = vtkActor.newInstance();
model.barActor.setMapper(model.barMapper);
// for texture atlas
model.tmPolyData = vtkPolyData.newInstance();
model.tmMapper = vtkMapper.newInstance();
model.tmMapper.setInputData(model.tmPolyData);
model.tmTexture = vtkTexture.newInstance({ resizable: true });
model.tmTexture.setInterpolate(false);
model.tmActor = vtkActor.newInstance({ parentProp: publicAPI });
model.tmActor.setMapper(model.tmMapper);
model.tmActor.addTexture(model.tmTexture);
model.barPosition = [0, 0];
model.barSize = [0, 0];
model.boxPosition = [0.88, -0.92];
model.boxSize = [0.1, 1.1];
// internal variables
model.lastTickBounds = [];
vtkScalarBarActorHelper(publicAPI, model);
},
'vtkScalarBarActorHelper'
);
//
// Now we define the public class that the application sets view independent
// properties on. This class is fairly small as it mainly just holds
// properties setter and getters leaving all calculations to the helper
// class.
//
function vtkScalarBarActor(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkScalarBarActor');
publicAPI.setTickTextStyle = (tickStyle) => {
model.tickTextStyle = { ...model.tickTextStyle, ...tickStyle };
publicAPI.modified();
};
publicAPI.setAxisTextStyle = (axisStyle) => {
model.axisTextStyle = { ...model.axisTextStyle, ...axisStyle };
publicAPI.modified();
};
publicAPI.resetAutoLayoutToDefault = () => {
publicAPI.setAutoLayout(defaultAutoLayout(publicAPI, model));
};
publicAPI.resetGenerateTicksToDefault = () => {
publicAPI.setGenerateTicks(defaultGenerateTicks(publicAPI, model));
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
function defaultValues(initialValues) {
return {
automated: true,
autoLayout: null,
axisLabel: 'Scalar Value',
barPosition: [0, 0],
barSize: [0, 0],
boxPosition: [0.88, -0.92],
boxSize: [0.1, 1.1],
scalarToColors: null,
axisTitlePixelOffset: 36.0,
axisTextStyle: {
fontColor: 'white',
fontStyle: 'normal',
fontSize: 18,
fontFamily: 'serif',
},
tickLabelPixelOffset: 14.0,
tickTextStyle: {
fontColor: 'white',
fontStyle: 'normal',
fontSize: 14,
fontFamily: 'serif',
},
generateTicks: null,
drawNanAnnotation: true,
drawBelowRangeSwatch: true,
drawAboveRangeSwatch: true,
...initialValues,
};
}
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, defaultValues(initialValues));
if (!model.autoLayout) model.autoLayout = defaultAutoLayout(publicAPI, model);
if (!model.generateTicks)
model.generateTicks = defaultGenerateTicks(publicAPI, model);
// Inheritance
vtkActor.extend(publicAPI, model, initialValues);
publicAPI.getProperty().setDiffuse(0.0);
publicAPI.getProperty().setAmbient(1.0);
macro.setGet(publicAPI, model, [
'automated',
'autoLayout',
'axisTitlePixelOffset',
'axisLabel',
'scalarsToColors',
'tickLabelPixelOffset',
'generateTicks',
'drawNanAnnotation',
'drawBelowRangeSwatch',
'drawAboveRangeSwatch',
]);
macro.get(publicAPI, model, ['axisTextStyle', 'tickTextStyle']);
macro.getArray(publicAPI, model, [
'barPosition',
'barSize',
'boxPosition',
'boxSize',
]);
macro.setArray(
publicAPI,
model,
['barPosition', 'barSize', 'boxPosition', 'boxSize'],
2
);
// Object methods
vtkScalarBarActor(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkScalarBarActor');
// ----------------------------------------------------------------------------
export default { newInstance, extend, newScalarBarActorHelper };
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