static bool GenerateMeshData(IvyGraph ivyGraph, IvyProfile ivyProfile, bool forceGeneration = false)
{
var p = ivyProfile;
//branches
foreach (var root in ivyGraph.roots)
{
var cache = IvyRoot.GetMeshCacheFor(root);
if (root.useCachedBranchData && !forceGeneration)
{
combinedTriangleIndices.Clear();
cache.triangles.ForEach(localIndex => combinedTriangleIndices.Add(localIndex + verticesAll.Count));
trianglesAll.AddRange(combinedTriangleIndices);
verticesAll.AddRange(cache.vertices);
texCoordsAll.AddRange(cache.texCoords);
continue;
}
root.useCachedBranchData = true;
//process only roots with more than one node
if (root.nodes.Count < 2)
{
continue;
}
cache.vertices.Clear();
cache.texCoords.Clear();
cache.triangles.Clear();
//branch diameter depends on number of parents AND branch taper
float local_ivyBranchDiameter = 1.0f / Mathf.Lerp(1f, 1f + root.parents, ivyProfile.branchTaper);
// smooth the line... which increases points a lot
allPoints = root.nodes.Select(node => node.p).ToList();
var useThesePoints = allPoints;
if (ivyProfile.branchSmooth > 1)
{
SmoothLineCatmullRomNonAlloc(allPoints, smoothPoints, ivyProfile.branchSmooth);
useThesePoints = smoothPoints;
}
// generate simplified points for each root, to make it less wavy AND save tris
if (!root.isAlive && ivyProfile.branchOptimize > 0f)
{
newPoints.Clear();
newPoints.AddRange(SimplificationHelpers.Simplify <Vector3>(
useThesePoints,
(vec1, vec2) => vec1 == vec2,
(vec) => vec.x,
(vec) => vec.y,
(vec) => vec.z,
ivyProfile.branchOptimize * ivyProfile.ivyStepDistance * 0.5f,
false
));
useThesePoints = newPoints;
}
// I'm not sure why there's this bug when we use Catmull Rom + line simplify, but let's do this hacky fix
// if ( ivyProfile.branchSmooth > 1 && ivyProfile.branchOptimize > 0f ) {
// useThesePoints.ForEach( delegate(Vector3 point) {
// if ( float.IsInfinity(point.x) ) {point.x = 0f;}
// if ( float.IsInfinity(point.y) ) {point.y = 0f;}
// if ( float.IsInfinity(point.z) ) {point.z = 0f;}
// } );
// }
for (int n = 0; n < useThesePoints.Count; n++)
{
if (verticesAll.Count >= 65531)
{
Debug.LogWarning("Hedera: ending branch generation early, reached ~65536 vertex limit on mesh " + ivyGraph.seedPos + "... but this could technically be solved in Unity 2017.3+ or later with 32-bit index formats for meshes? The exercise is left to the reader.");
break;
}
cache.meshSegments = n + 1;
//weight depending on ratio of node length to total length
float taper = 1f * n / useThesePoints.Count;
taper = Mathf.Lerp(1f, (1f - taper) * taper, ivyProfile.branchTaper);
//create trihedral vertices... TODO: let user specify how many sides?
Vector3 up = Vector3.down;
Vector3 basis = Vector3.Normalize(n < useThesePoints.Count - 1 ? useThesePoints[n + 1] - useThesePoints[n] : -(useThesePoints[n] - useThesePoints[n - 1]));
// Debug.DrawLine( newPoints[node+1] + ivyGraph.seedPos, newPoints[node] + ivyGraph.seedPos, Color.cyan, 5f, false);
int edges = 3; // TODO: finish this, make it configurable
float texV = (n % 2 == 0 ? 1f : 0.0f); // vertical UV tiling
for (int b = 0; b < edges; b++)
{
// generate vertices
if (b == 0)
{
branchVertBasis[b] = Vector3.Cross(up, basis).normalized *Mathf.Max(0.001f, local_ivyBranchDiameter * p.ivyBranchSize * taper) + useThesePoints[n];
}
else
{
branchVertBasis[b] = RotateAroundAxis(branchVertBasis[0], useThesePoints[n], basis, 6.283f * b / edges);
}
cache.vertices.Add(branchVertBasis[b]);
// generate UVs
cache.texCoords.Add(new Vector2(1f * b / (edges - 1), texV));
// add triangles
// AddTriangle(root, 4, 1, 5);
// AddTriangle(root, 5, 1, 2);
// TODO: finish this
}
if (n == 0) // start cap
{
if (taper > 0f)
{
AddTriangle(cache, 1, 2, 3);
}
continue;
}
AddTriangle(cache, 4, 1, 5);
AddTriangle(cache, 5, 1, 2);
AddTriangle(cache, 5, 2, 6);
AddTriangle(cache, 6, 2, 3);
AddTriangle(cache, 6, 3, 1);
AddTriangle(cache, 6, 1, 4);
if (n == useThesePoints.Count - 1 && taper > 0f) // end cap
{
AddTriangle(cache, 3, 2, 1);
}
}
combinedTriangleIndices.Clear();
cache.triangles.ForEach(localIndex => combinedTriangleIndices.Add(localIndex + verticesAll.Count));
trianglesAll.AddRange(combinedTriangleIndices);
verticesAll.AddRange(cache.vertices);
texCoordsAll.AddRange(cache.texCoords);
}
if (ivyProfile.ivyLeafSize <= 0.001f || ivyProfile.leafProbability <= 0.001f)
{
return(true);
}
//create leafs
allLeafPoints.Clear();
foreach (var root in ivyGraph.roots)
{
// don't bother on small roots
if (root.nodes.Count <= 2)
{
root.useCachedLeafData = false;
continue;
}
var cache = IvyRoot.GetMeshCacheFor(root);
// use cached mesh data for leaves only if (a) we're supposed to, and (b) if not using vertex colors OR vertex colors seem valid
if (root.useCachedLeafData && !forceGeneration && (!ivyProfile.useVertexColors || cache.leafVertices.Count == cache.leafVertexColors.Count))
{
combinedTriangleIndices.Clear();
cache.leafTriangles.ForEach(index => combinedTriangleIndices.Add(index + leafVerticesAll.Count));
leafTrianglesAll.AddRange(combinedTriangleIndices);
allLeafPoints.AddRange(cache.leafPoints);
leafVerticesAll.AddRange(cache.leafVertices);
leafUVsAll.AddRange(cache.leafUVs);
if (ivyProfile.useVertexColors)
{
leafColorsAll.AddRange(cache.leafVertexColors);
}
continue;
}
root.useCachedLeafData = true;
cache.leafPoints.Clear();
cache.leafVertices.Clear();
cache.leafUVs.Clear();
cache.leafTriangles.Clear();
cache.leafVertexColors.Clear();
// simple multiplier, just to make it a more dense
for (int i = 0; i < 1; ++i)
{
var leafPositions = GetAllSamplePosAlongRoot(root, p.ivyLeafSize);
// for(int n=0; n<root.nodes.Count; n++)
foreach (var kvp in leafPositions)
{
if (leafVerticesAll.Count >= 65530)
{
Debug.LogWarning("Hedera: ending leaf generation early, reached ~65536 vertex limit on mesh " + ivyGraph.seedPos + "... but this could technically be solved in Unity 2017.3+ or later with 32-bit index formats for meshes? The exercise is left to the reader.");
break;
}
int n = kvp.Value;
Vector3 newLeafPos = kvp.Key;
var node = root.nodes[n];
// // do not generate a leaf on the first few nodes
// if ( n <= 1 ) { // || n >= root.nodes.Count
// continue;
// }
// probability of leaves on the ground is increased
float groundedness = Vector3.Dot(Vector3.down, node.c.normalized);
if (groundedness < -0.02f)
{
groundedness -= 0.1f;
groundedness *= 3f;
}
else
{
groundedness = (groundedness - 0.25f) * 0.5f;
}
groundedness *= ivyProfile.leafSunlightBonus * p.leafProbability;
// don't spawn a leaf on top of another leaf
bool badLeafPos = false;
float leafSqrSize = p.ivyLeafSize * p.ivyLeafSize * Mathf.Clamp(1f - p.leafProbability - groundedness, 0.01f, 2f);
for (int f = 0; f < allLeafPoints.Count; f++)
{
if (Vector3.SqrMagnitude(allLeafPoints[f] - newLeafPos) < leafSqrSize)
{
badLeafPos = true;
break;
}
}
if (badLeafPos)
{
continue;
}
IvyNode previousNode = root.nodes[Mathf.Max(0, n - 1)];
float randomSpreadHack = 0.25f;
if (n <= 1 || n == root.nodes.Count - 1)
{
randomSpreadHack = 0f;
}
// randomize leaf probability // guarantee a leaf on the first or last node
if ((Random.value + groundedness > 1f - p.leafProbability) || randomSpreadHack == 0f)
{
cache.leafPoints.Add(node.p);
allLeafPoints.Add(node.p);
//center of leaf quad
Vector3 up = (newLeafPos - previousNode.p).normalized;
Vector3 right = Vector3.Cross(up, node.c);
Vector3 center = newLeafPos - node.c.normalized * 0.05f + (up * Random.Range(-1f, 1f) + right * Random.Range(-1f, 1f)) * randomSpreadHack * p.ivyLeafSize;
//size of leaf
float sizeWeight = 1.5f - (Mathf.Abs(Mathf.Cos(2.0f * Mathf.PI)) * 0.5f + 0.5f);
float leafSize = p.ivyLeafSize * sizeWeight + Random.Range(-p.ivyLeafSize, p.ivyLeafSize) * 0.1f + (p.ivyLeafSize * groundedness);
leafSize = Mathf.Max(0.01f, leafSize);
Quaternion facing = node.c.sqrMagnitude < 0.001f ? Quaternion.identity : Quaternion.LookRotation(Vector3.Lerp(-node.c, Vector3.up, Mathf.Clamp01(0.68f - Mathf.Abs(groundedness)) * ivyProfile.leafSunlightBonus), Random.onUnitSphere);
AddLeafVertex(cache, center, new Vector3(-1f, 1f, 0f), leafSize, facing);
AddLeafVertex(cache, center, new Vector3(1f, 1f, 0f), leafSize, facing);
AddLeafVertex(cache, center, new Vector3(-1f, -1f, 0f), leafSize, facing);
AddLeafVertex(cache, center, new Vector3(1f, -1f, 0f), leafSize, facing);
cache.leafUVs.Add(new Vector2(1.0f, 1.0f));
cache.leafUVs.Add(new Vector2(0.0f, 1.0f));
cache.leafUVs.Add(new Vector2(1.0f, 0.0f));
cache.leafUVs.Add(new Vector2(0.0f, 0.0f));
if (ivyProfile.useVertexColors)
{
var randomColor = ivyProfile.leafVertexColors.Evaluate(Random.value);
cache.leafVertexColors.Add(randomColor);
cache.leafVertexColors.Add(randomColor);
cache.leafVertexColors.Add(randomColor);
cache.leafVertexColors.Add(randomColor);
}
// calculate normal of the leaf tri, and make it face outwards
// var normal = GetNormal(
// ivyGraph.leafVertices[ivyGraph.leafVertices.Count - 2],
// ivyGraph.leafVertices[ivyGraph.leafVertices.Count - 4],
// ivyGraph.leafVertices[ivyGraph.leafVertices.Count - 3]
// );
// if ( Vector3.Dot( normal, node.adhesionVector) < 0f) {
// AddLeafTriangle(ivyGraph, 2, 4, 3);
// AddLeafTriangle(ivyGraph, 3, 1, 2);
// } else {
AddLeafTriangle(cache, 1, 3, 4);
AddLeafTriangle(cache, 4, 2, 1);
// }
}
}
combinedTriangleIndices.Clear();
cache.leafTriangles.ForEach(index => combinedTriangleIndices.Add(index + leafVerticesAll.Count));
leafTrianglesAll.AddRange(combinedTriangleIndices);
leafVerticesAll.AddRange(cache.leafVertices);
leafUVsAll.AddRange(cache.leafUVs);
if (ivyProfile.useVertexColors)
{
leafColorsAll.AddRange(cache.leafVertexColors);
}
}
}
return(true);
}
private void pb_Draw_MouseUp(object sender, MouseEventArgs e)
{
isMouseDown = false;
if (drawCheckbox.Checked)
{
try
{
IList <Point> simplifiedPointsLine = SimplificationHelpers.Simplify <Point>(
pointCollection,
(p1, p2) => p1 == p2,
(p) => p.X,
(p) => p.Y,
Convert.ToDouble(tolerance_textbox.Text),
hq_checkbox.Checked
);
pointCollection = new List <Point>();
outputPointsLabel.Text = "Output points: " + simplifiedPointsLine.Count;
if (tb_width.Text != "" && lv_charmap.SelectedItems.Count != 0)
{
if (autoInputOutputPoints.Checked && simplifiedPointsLine.Count > 0) //if checked - adding input point as input point
{
lv_points.Items.Add(simplifiedPointsLine[0].X / 2 + "," + simplifiedPointsLine[0].Y / 2 + ",-1,-1");
segs++;
}
for (int i = 0; i < simplifiedPointsLine.Count - 1; i++) //iterating through every point except the last one because line builds of two points - this and next
{
lv_points.Items.Add(simplifiedPointsLine[i].X / 2 + "," + simplifiedPointsLine[i].Y / 2 + "," + (simplifiedPointsLine[i + 1].X / 2 + "," + simplifiedPointsLine[i + 1].Y / 2));
segs++;
}
selected_seg = segs - 1;
for (int i = 0; i < segs; i++)
{
lv_points.Items[i].Selected = false;
lv_points.Items[i].Focused = false;
}
lv_points.Items[segs - 1].Selected = true;
lv_points.Items[segs - 1].Focused = true;
if (autoInputOutputPoints.Checked && simplifiedPointsLine.Count > 0) //if checked - adding last point as output point
{
lv_points.Items.Add("-1,-1," + simplifiedPointsLine[simplifiedPointsLine.Count - 1].X / 2 + "," + simplifiedPointsLine[simplifiedPointsLine.Count - 1].Y / 2);
segs++;
}
if (autogapCheckbox.Checked) //autogapping on fly
{
remove_gaps(null, null); //it removes gapps and saves the array
}
else
{
setButton_Click(null, null); //it saves the array
}
}
else
{
MaterialMessageBox.Show("Select the char and enter the width first!");
}
}
catch (FormatException exep)
{
MaterialMessageBox.Show("Tolerance value is incorrect!");
}
//simplifying the pointcollection
}
}
