private void ConstructSymbols(JSONNode legendSpecs, ref ChannelEncoding channelEncoding, GameObject markPrefab)
{
GameObject legendValuePrefab = Resources.Load("Legend/LegendValue", typeof(GameObject)) as GameObject;
if (channelEncoding.channel == "color")
{
foreach (string domainValue in channelEncoding.scale.domain)
{
// Create container for mark + label:
GameObject legendValueInstance = Instantiate(legendValuePrefab, gameObject.transform.position,
gameObject.transform.rotation, gameObject.transform);
// Create mark instance:
GameObject markInstance = Instantiate(markPrefab, legendValueInstance.transform.position,
legendValueInstance.transform.rotation, legendValueInstance.transform);
// Apply channel value for this domain:
string channelValue = channelEncoding.scale.ApplyScale(domainValue);
Mark markComponent = markInstance.GetComponent <Mark>();
markComponent.SetChannelValue(channelEncoding.channel, channelValue);
// Set size:
markComponent.SetChannelValue("size", "20");
// Assign mark and label:
legendValueInstance.GetComponent <LegendValue>().SetDataFieldName(channelEncoding.field);
legendValueInstance.GetComponent <LegendValue>().SetTitle(domainValue);
legendValueInstance.GetComponent <LegendValue>().SetMark(markInstance);
// Update the collection.
legendValueInstance.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().UpdateCollection();
}
gameObject.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().Rows = channelEncoding.scale.domain.Count + 1;
gameObject.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().CellHeight = 0.05f; // TODO: Set to height of each legendValue.
gameObject.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().UpdateCollection();
}
else if (channelEncoding.channel == "opacity")
{
// TODO:
}
else if (channelEncoding.channel == "size")
{
// TODO:
}
else if (channelEncoding.channel == "shape")
{
// TODO:
}
else
{
throw new Exception("Legend constructor does not know how to construct legend for " + channelEncoding.channel);
}
}
// TODO: Get rid of hard coded default values.
private void ConstructGradient(JSONNode legendSpecs, ref ChannelEncoding channelEncoding)
{
colorLine = gameObject.GetComponentInChildren <LineRenderer>(true);
bool addTicks = false;
Transform ticks = gameObject.transform.Find("Ticks");
GameObject tickPrefab = null;
if (ticks != null)
{
addTicks = true;
ticks.gameObject.SetActive(true);
tickPrefab = Resources.Load("Legend/LegendTick") as GameObject;
}
if (colorLine == null)
{
throw new Exception("Cannot find ColorLine LineRenderer object in legend.");
}
colorLine.gameObject.SetActive(true);
colorLine.material = new Material(Shader.Find("Sprites/Default"));
float width = 0.2f;
float height = 0.05f;
if (legendSpecs["gradientWidth"] == null || legendSpecs["gradientHeight"] == null)
{
width = legendSpecs["gradientWidth"].AsFloat * DxR.Vis.SIZE_UNIT_SCALE_FACTOR;
height = legendSpecs["gradientHeight"].AsFloat * DxR.Vis.SIZE_UNIT_SCALE_FACTOR;
}
List <Vector3> positionsList = new List <Vector3>();
List <GradientColorKey> colorKeyList = new List <GradientColorKey>();
List <GradientAlphaKey> alphaKeyList = new List <GradientAlphaKey>();
float alpha = 1.0f;
int domainCount = channelEncoding.scale.domain.Count;
for (int i = 0; i < domainCount; i++)
{
float pct = channelEncoding.scale.GetDomainPct(channelEncoding.scale.domain[i]);
positionsList.Add(new Vector3(width * pct, 0.0f, 0.0f));
Color col;
ColorUtility.TryParseHtmlString(channelEncoding.scale.range[i], out col);
colorKeyList.Add(new GradientColorKey(col, pct));
alphaKeyList.Add(new GradientAlphaKey(alpha, pct));
if (addTicks && tickPrefab != null)
{
GameObject tick = Instantiate(tickPrefab, ticks.transform.position, ticks.transform.rotation, ticks.transform);
Vector3 pos = Vector3.zero;
pos.x = width * pct;
pos.y = 0.04f; // TODO: Get this from text size.
tick.transform.Translate(pos);
tick.GetComponent <TextMesh>().text = channelEncoding.scale.domain[i];
}
}
colorLine.positionCount = positionsList.Count;
colorLine.SetPositions(positionsList.ToArray());
colorLine.startWidth = height;
colorLine.endWidth = height;
Gradient gradient = new Gradient();
gradient.SetKeys(colorKeyList.ToArray(), alphaKeyList.ToArray());
colorLine.colorGradient = gradient;
colorLine.transform.parent = gameObject.transform;
gameObject.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().Rows = 3; // TODO: Update this if no ticks are shown.
gameObject.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().CellHeight = 0.08f;
gameObject.GetComponent <HoloToolkit.Unity.Collections.ObjectCollection>().UpdateCollection();
}
