void SetNewNode(Vector3 nodePos, Color nodeColor, TrailData trailData, Trail trail)
{
Node node;
node.time = Time.time;
node.pos = nodePos;
node.trailId = trailData.currentTrailId;
node.color = color;
trailData.currentNodeIdx++;
if (trailData.currentNodeIdx >= nodeNum)
{
trailData.currentNodeIdx = 0;
}
// update trail
trailData.trails[trailData.currentTrailId] = trail;
// write new node
trailData.nodes[trailData.currentNodeIdx] = node;
trailData.trailBuffer.SetData(trailData.trails, trailData.currentTrailId, trailData.currentTrailId, 1);
trailData.nodeBuffer.SetData(trailData.nodes, trailData.currentNodeIdx, trailData.currentNodeIdx, 1);
}
void Start()
{
trailDatas = new TrailData[Enum.GetValues(typeof(TrailType)).Length];
for (int i = 0; i < trailDatas.Length; i++)
{
trailDatas[i] = new TrailData(trailNum, nodeNum, (TrailType)i);
}
}
public void InputPoint(Input input, bool isNewTrail)
{
TrailData trailData = trailDatas[(int)currentTrailType];
if (isNewTrail)
{
trailData.currentTrailId++;
}
if (trailData.currentTrailId < trailNum)
{
Trail trail = trailData.trails[trailData.currentTrailId];
if (isNewTrail)
{
trail.type = (int)currentTrailType;
trail.witdh = width;
trail.particleSpeed = particleSpeed;
}
float dist = 0;
if (trailData.currentNodeIdx >= 0)
{
dist = Vector3.Distance(input.pos, trailData.nodes[trailData.currentNodeIdx].pos);
}
//input positionと前フレームでの最後の点を結ぶ
//一定の距離で正規化して配置。そのため、厳密には、マウスの点を通らない可能性あり
while (dist > updateDistaceMin && !isNewTrail)
{
Vector3 currentNodePos = trailData.nodes[trailData.currentNodeIdx].pos;
Vector3 nodePos = currentNodePos + updateDistaceMin * (input.pos - trailData.nodes[trailData.currentNodeIdx].pos).normalized;
SetNewNode(nodePos, new Color(UnityEngine.Random.value, UnityEngine.Random.value, UnityEngine.Random.value, 1), trailData, trail);
dist = Vector3.Distance(input.pos, nodePos);
}
//ラインの最初の点だけは指定された位置
if (isNewTrail)
{
SetNewNode(input.pos, new Color(UnityEngine.Random.value, UnityEngine.Random.value, UnityEngine.Random.value, 1), trailData, trail);
}
}
}