public UVArea getArea(string name)
{
UVArea a = null;
uvAreas.TryGetValue(name, out a);
return(a);
}
public UVArea(UVArea input)
{
this.u1 = input.u1;
this.u2 = input.u2;
this.v1 = input.v1;
this.v2 = input.v2;
}
public List<Vertex> generateVertices(MeshBuilder builder, Vector3 offset, UVArea area, float v, float yCos, float ySin)
{
List<Vertex> vertices = builder.generateRadialVerticesFlatUVs(offset, faces, radius, height, startAngle, endAngle, v, area, yCos, ySin);
startVector = vertices[0].vertex;
endVector = vertices[vertices.Count - 1].vertex;
return vertices;
}
public void setUVArea(UVArea area)
{
this.u1 = area.u1;
this.u2 = area.u2;
this.v1 = area.v1;
this.v2 = area.v2;
}
public void setUVArea(UVArea area)
{
this.u1 = area.u1;
this.u2 = area.u2;
this.v1 = area.v1;
this.v2 = area.v2;
}
public List <Vertex> generateVertices(MeshBuilder builder, Vector3 offset, UVArea area, float v, float yCos, float ySin)
{
List <Vertex> vertices = builder.generateRadialVerticesFlatUVs(offset, faces, radius, height, startAngle, endAngle, v, area, yCos, ySin);
startVector = vertices[0].vertex;
endVector = vertices[vertices.Count - 1].vertex;
return(vertices);
}
public UVMap(ConfigNode node)
{
ConfigNode[] areaNodes = node.GetNodes("UVAREA");
int len = areaNodes.Length;
for (int i = 0; i < len; i++)
{
UVArea area = new UVArea(areaNodes[i]);
uvAreas.Add(area.name, area);
}
}
public Mesh generatePanels(Vector3 pos, UVArea outer, UVArea inner, UVArea caps)
{
int len = outerArcs.Count;
MeshBuilder builder = new MeshBuilder();
for (int i = 0; i < len - 1; i++)
{
generatePanelSegment(builder, pos, outerArcs[i], outerArcs[i + 1], outer, false, true, false); //outside panels
generatePanelSegment(builder, pos, innerArcs[i], innerArcs[i + 1], inner, true, false, true); //inside panels
}
generatePanelSegment(builder, pos, outerArcs[0], innerArcs[0], caps, true, false, false); //bottom cap
generatePanelSegment(builder, pos, outerArcs[outerArcs.Count - 1], innerArcs[innerArcs.Count - 1], caps, false, false, false); //top cap
if (shouldGenerateSidewalls)
{
generateSidewalls(builder, caps);
}
return(builder.buildMesh());
}
protected void generateFairingPanel(MeshGenerator gen)
{
//generate outer wall
generateFairingWallSection(gen, outerCap, outerPanel, 0, totalPanelHeight, maxPanelSectionHeight, boltPanelHeight, topOuterRadius, bottomOuterRadius, sidesPerPanel, anglePerSide, startAngle, true);
//generate inner wall
generateFairingWallSection(gen, innerCap, innerPanel, 0, totalPanelHeight, maxPanelSectionHeight, boltPanelHeight, topInnerRadius, bottomInnerRadius, sidesPerPanel, anglePerSide, startAngle, false);
//setup proper scaled UVs to maintain 1:1 aspect ratio for a straight cylinder panel
UVArea innerCapUV = new UVArea (this.innerCap);
float vHeight = innerCapUV.v2 - innerCapUV.v1;
float uScale = vHeight / wallThickness;
innerCapUV.u2 = (bottomOuterCirc / (float)numOfPanels) * uScale;
gen.setUVArea(innerCapUV);
//generate bottom cap
gen.generateCylinderPartialCap(0, -bottomOuterRadius, 0, bottomOuterRadius, bottomInnerRadius, sidesPerPanel, anglePerSide, startAngle, false);
innerCapUV.u2 = (topOuterCirc / (float)numOfPanels) * uScale;
gen.setUVArea(innerCapUV);
//generate top cap
gen.generateCylinderPartialCap(0, -bottomOuterRadius, 0 + totalPanelHeight, topOuterRadius, topInnerRadius, sidesPerPanel, anglePerSide, startAngle, true);
// uScale is already determined by wall thickness
// thus only uv-U needs scaled based on actual panel aspect ratio
Vector2 topMeasure = new Vector2 (topOuterRadius - bottomOuterRadius, totalPanelHeight);
float sideHeight = topMeasure.magnitude;
innerCapUV.u2 = sideHeight * uScale;
gen.setUVArea(innerCapUV);
//generate left? panel side
gen.generateCylinderPanelSidewall(0, -bottomOuterRadius, 0, totalPanelHeight, topOuterRadius, topInnerRadius, bottomOuterRadius, bottomInnerRadius, startAngle, true);
//generate right? panel side
gen.generateCylinderPanelSidewall(0, -bottomOuterRadius, 0, totalPanelHeight, topOuterRadius, topInnerRadius, bottomOuterRadius, bottomInnerRadius, startAngle + anglePerPanel, false);
}
public UVArea(UVArea input)
{
this.u1 = input.u1;
this.u2 = input.u2;
this.v1 = input.v1;
this.v2 = input.v2;
}
/// <summary>
/// Generates a ring of vertices using circular UV mapping, where the center of the ring is the center of the UV area.
/// Input radius is the radius of the actual ring, uvRadius is the radius to be used for maximal UV bounds
/// (e.g. they will only be different on an inner-ring; where radius=ring radius, and uvRadius = outerRingRadius)
/// </summary>
/// <param name="offset"></param>
/// <param name="faces"></param>
/// <param name="radius"></param>
/// <param name="height"></param>
/// <param name="startAngle"></param>
/// <param name="endAngle"></param>
/// <param name="area">The UV area to map the UV vertex to.</param>
/// <param name="uvRadius">The radius to be used for the UV area, in case it differs from the radius in use (basically scales the UV area)</param>
/// <param name="yCos">Determines the x/z normal component</param>
/// <param name="ySin">Used directly as the y normal component</param>
/// <returns></returns>
public List<Vertex> generateRadialVerticesCylinderUVs(Vector3 offset, int faces, float radius, float height, float startAngle, float endAngle, UVArea area, float uvRadius, float yCos, float ySin)
{
List<Vertex> verts = new List<Vertex>();
float totalAngle = endAngle - startAngle;
float anglePerFace = 360f / faces;
int numOfFaces = (int)(totalAngle / anglePerFace);
float angle, xCos, zSin, nx, ny, nz, x, y, z;
Vector2 min = new Vector2(-uvRadius, -uvRadius);
Vector2 max = new Vector2(uvRadius, uvRadius);
Vector2 pos;
Vector2 uv;
for (int i = 0; i < numOfFaces + 1; i++)
{
angle = startAngle + anglePerFace * i;
xCos = Mathf.Cos(angle * Mathf.Deg2Rad);
zSin = Mathf.Sin(angle * Mathf.Deg2Rad);
x = xCos * radius + offset.x;
y = height + offset.y;
z = zSin * radius + offset.z;
nx = xCos * yCos;
ny = ySin;
nz = zSin * yCos;
pos = new Vector2(xCos * radius, zSin * radius);
uv = area.getUV(min, max, pos);
verts.Add(addVertex(new Vector3(x, y, z), new Vector3(nx, ny, nz), uv));
}
return verts;
}
/// <summary>
/// Used to generate a ring of vertices with the uvMapping appropriate for a cylinder wall (increments in +x)
/// </summary>
/// <param name="offset"></param>
/// <param name="faces"></param>
/// <param name="radius"></param>
/// <param name="height"></param>
/// <param name="startAngle"></param>
/// <param name="endAngle"></param>
/// <param name="v"></param>
/// <param name="area"></param>
/// <param name="yCos"></param>
/// <param name="ySin"></param>
/// <returns></returns>
public List<Vertex> generateRadialVerticesFlatUVs(Vector3 offset, int faces, float radius, float height, float startAngle, float endAngle, float v, UVArea area, float yCos, float ySin)
{
List<Vertex> verts = new List<Vertex>();
float startRad = startAngle * Mathf.Deg2Rad;
float endRad = endAngle * Mathf.Deg2Rad;
float totalRad = endRad - startRad;
float radPerFace = (float)((2.0 * Math.PI) / faces);
float radPerSub = radPerFace / subdivision;
int numOfFaces = (int)Math.Round(totalRad / radPerFace, 0);
float rads, xCos, zSin, nx, ny, nz, x, y, z, percentTotalAngle;
float subRads, x2 = 0, z2 = 0, x3, z3, xCos2 = 0, zSin2 = 0, nextRads = 0, nextPerc=0, subPerc, lerp;
y = height + offset.y;
ny = ySin;
for (int i = 0; i < numOfFaces + 1; i++)
{
if (i > 0)//vars were caled last round for the interpolation
{
rads = nextRads;
percentTotalAngle = nextPerc;
xCos = xCos2;
zSin = zSin2;
x = x2;
z = z2;
}
else
{
rads = startRad + (radPerFace * i);
percentTotalAngle = (rads - startRad) / totalRad;
xCos = Mathf.Cos(rads);
zSin = Mathf.Sin(rads);
x = xCos * radius + offset.x;
z = zSin * radius + offset.z;
}
nx = xCos * yCos;
nz = zSin * yCos;
verts.Add(addVertex(new Vector3(x, y, z), new Vector3(nx, ny, nz), new Vector2(area.getU(percentTotalAngle), v)));
//calculate the points/etc for the next panel face, to lerp between positions; data is re-used next iteration if present
nextRads = startRad + (radPerFace * (i + 1));
nextPerc = (nextRads - startRad) / totalRad;
xCos2 = Mathf.Cos(nextRads);
zSin2 = Mathf.Sin(nextRads);
x2 = xCos2 * radius + offset.x;
z2 = zSin2 * radius + offset.z;
//do not add subdivision panel if the next vertex is the last one in the ring
if (i == numOfFaces) { break; }
//if was the last vert... do not add subs
for (int k = 1; k < subdivision; k++)
{
lerp = (float)k / subdivision;
x3 = Mathf.Lerp(x, x2, lerp);
z3 = Mathf.Lerp(z, z2, lerp);
subRads = rads + (radPerSub * k);//subangle used for normal calc... position calculated from interpolation to maintain cylinder side matching
subPerc = (subRads - startRad) / totalRad;
xCos = Mathf.Cos(subRads);
zSin = Mathf.Sin(subRads);
nx = xCos * yCos;
nz = zSin * yCos;
verts.Add(addVertex(new Vector3(x3, y, z3), new Vector3(nx, ny, nz), new Vector2(area.getU(subPerc), v)));
}
}
return verts;
}
public Mesh generatePanels(Vector3 pos, UVArea outer, UVArea inner, UVArea caps)
{
int len = outerArcs.Count;
MeshBuilder builder = new MeshBuilder();
for (int i = 0; i < len - 1; i++)
{
generatePanelSegment(builder, pos, outerArcs[i], outerArcs[i + 1], outer, false, true, false);//outside panels
generatePanelSegment(builder, pos, innerArcs[i], innerArcs[i + 1], inner, true, false, true);//inside panels
}
generatePanelSegment(builder, pos, outerArcs[0], innerArcs[0], caps, true, false, false);//bottom cap
generatePanelSegment(builder, pos, outerArcs[outerArcs.Count - 1], innerArcs[innerArcs.Count - 1], caps, false, false, false);//top cap
if (shouldGenerateSidewalls)
{
generateSidewalls(builder, caps);
}
return builder.buildMesh();
}
private void loadConfigData()
{
ConfigNode node = SSTUConfigNodeUtils.parseConfigNode(configNodeData);
ConfigNode insideUVNode = node.GetNode("UVMAP", "name", "inside");
ConfigNode outsideUVNode = node.GetNode("UVMAP", "name", "outside");
ConfigNode topNode = node.GetNode("UVMAP", "name", "top");
ConfigNode bottomNode = node.GetNode("UVMAP", "name", "bottom");
insideUV = new UVArea(insideUVNode);
outsideUV = new UVArea(outsideUVNode);
topUV = new UVArea(topNode);
bottomUV = new UVArea(bottomNode);
techLimits = TechLimitHeightDiameter.loadTechLimits(node.GetNodes("TECHLIMIT"));
updateTechLimits();
}
private void generateSidewalls(MeshBuilder builder, UVArea caps)
{
int len = outerArcs.Count;
float[] distances = new float[len];
float[] us = new float[len];
float totalLength = 0;
float length;
Vector3 a, b;
for (int i = 0; i < len - 1; i++)
{
a = outerArcs[i].startVector;
b = outerArcs[i + 1].startVector;
length = Vector3.Distance(a, b);
totalLength += length;
distances[i + 1] = length;
}
length = 0;
float percent;
float uDelta = caps.u2 - caps.u1;
for (int i = 0; i < len; i++)
{
length += distances[i];
percent = length / totalLength;
us[i] = caps.u1 + percent * uDelta;
}
Vector3 leftNorm = new Vector3();
leftNorm.x = outerArcs[0].startVector.z;
leftNorm.z = -outerArcs[0].startVector.x;
leftNorm.Normalize();
Vector3 rightNorm = new Vector3();
rightNorm.x = outerArcs[0].endVector.z;
rightNorm.z = -outerArcs[0].endVector.x;
rightNorm.Normalize();
rightNorm = -rightNorm;//as faces get inverted for this side, so norms get inverted as well
//left
List <Vertex> outerStartVerts = new List <Vertex>();
List <Vertex> innerStartVerts = new List <Vertex>();
//right
List <Vertex> outerEndVerts = new List <Vertex>();
List <Vertex> innerEndVerts = new List <Vertex>();
len = outerArcs.Count;
Vector3 outer, inner;
Vector2 uv;
for (int i = 0; i < len; i++)
{
outer = outerArcs[i].startVector;
uv = new Vector2(us[i], caps.v1);
outerStartVerts.Add(builder.addVertex(outer, leftNorm, uv));
inner = innerArcs[i].startVector;
uv = new Vector2(us[i], caps.v2);
innerStartVerts.Add(builder.addVertex(inner, leftNorm, uv));
outer = outerArcs[i].endVector;
uv = new Vector2(us[i], caps.v1);
outerEndVerts.Add(builder.addVertex(outer, rightNorm, uv));
inner = innerArcs[i].endVector;
uv = new Vector2(us[i], caps.v2);
innerEndVerts.Add(builder.addVertex(inner, rightNorm, uv));
}
builder.generateQuads(outerStartVerts, innerStartVerts, false);
builder.generateQuads(outerEndVerts, innerEndVerts, true);
}
private void generatePanelSegment(MeshBuilder builder, Vector3 pos, Arc arcA, Arc arcB, UVArea area, bool invertFaces, bool invertNormalY, bool invertNormalXZ)
{
float heightDiff = arcB.height - arcA.height;
float offset = arcA.radius - arcB.radius;
float sideRadians = Mathf.Atan2(heightDiff, offset) - 90 * Mathf.Deg2Rad;
float yCos = Mathf.Cos(sideRadians);
float ySin = Mathf.Sin(sideRadians);
if (invertNormalY)
{
ySin *= -1;
}
if (invertNormalXZ)
{
yCos *= -1;
}
List <Vertex> verts1 = new List <Vertex>();
List <Vertex> verts2 = new List <Vertex>();
verts1.AddRange(arcA.generateVertices(builder, pos, area, area.v1, yCos, ySin));
verts2.AddRange(arcB.generateVertices(builder, pos, area, area.v2, yCos, ySin));
builder.generateQuads(verts1, verts2, invertFaces);
}
/// <summary>
/// Generates a ring of vertices using circular UV mapping, where the center of the ring is the center of the UV area.
/// This would be used to generate a partial ring, such as the procedural decoupler
/// Input radius is the radius of the actual ring, uvRadius is the radius to be used for maximal UV bounds
/// (e.g. they will only be different on an inner-ring; where radius=ring radius, and uvRadius = outerRingRadius)
/// </summary>
/// <param name="offset"></param>
/// <param name="faces"></param>
/// <param name="radius"></param>
/// <param name="height"></param>
/// <param name="startAngle"></param>
/// <param name="endAngle"></param>
/// <param name="area">The UV area to map the UV vertex to.</param>
/// <param name="uvRadius">The radius to be used for the UV area, in case it differs from the radius in use (basically scales the UV area)</param>
/// <param name="yCos">Determines the x/z normal component</param>
/// <param name="ySin">Used directly as the y normal component</param>
/// <returns></returns>
public List<Vertex> generateRadialVerticesCylinderUVs(Vector3 offset, int faces, float radius, float height, float startAngle, float endAngle, UVArea area, float uvRadius, float yCos, float ySin)
{
List<Vertex> verts = new List<Vertex>();
float startRad = startAngle * Mathf.Deg2Rad;
float endRad = endAngle * Mathf.Deg2Rad;
float totalRad = endRad - startRad;
float radPerFace = (2f*Mathf.PI) / faces;
//int numOfFaces = (int)(totalRad / radPerFace);
int numOfFaces = (int)Math.Round(totalRad / radPerFace, 0);
float rads, xCos, zSin, nx, nz, x, y, z;
Vector2 min = new Vector2(-uvRadius, -uvRadius);
Vector2 max = new Vector2(uvRadius, uvRadius);
Vector2 pos;
Vector2 uv;
//unchanging vars
y = height + offset.y;
for (int i = 0; i < numOfFaces + 1; i++)
{
rads = startRad + (radPerFace * i);
xCos = Mathf.Cos(rads);
zSin = Mathf.Sin(rads);
x = xCos * radius + offset.x;
z = zSin * radius + offset.z;
nx = xCos * yCos;
nz = zSin * yCos;
pos = new Vector2(xCos * radius, zSin * radius);
uv = area.getUV(min, max, pos);
verts.Add(addVertex(new Vector3(x, y, z), new Vector3(nx, ySin, nz), uv));
}
return verts;
}
private void generatePanelSegment(MeshBuilder builder, Vector3 pos, Arc arcA, Arc arcB, UVArea area, bool invertFaces, bool invertNormalY, bool invertNormalXZ)
{
float heightDiff = arcB.height - arcA.height;
float offset = arcA.radius - arcB.radius;
float sideRadians = Mathf.Atan2(heightDiff, offset) - 90 * Mathf.Deg2Rad;
float yCos = Mathf.Cos(sideRadians);
float ySin = Mathf.Sin(sideRadians);
if (invertNormalY) { ySin *= -1; }
if (invertNormalXZ) { yCos *= -1; }
List<Vertex> verts1 = new List<Vertex>();
List<Vertex> verts2 = new List<Vertex>();
verts1.AddRange(arcA.generateVertices(builder, pos, area, area.v1, yCos, ySin));
verts2.AddRange(arcB.generateVertices(builder, pos, area, area.v2, yCos, ySin));
builder.generateQuads(verts1, verts2, invertFaces);
}
public UVMap(ConfigNode node)
{
ConfigNode[] areaNodes = node.GetNodes("UVAREA");
int len = areaNodes.Length;
for (int i = 0; i < len; i++)
{
UVArea area = new UVArea(areaNodes[i]);
uvAreas.Add(area.name, area);
}
}
private void generateSidewalls(MeshBuilder builder, UVArea caps)
{
int len = outerArcs.Count;
float[] distances = new float[len];
float[] us = new float[len];
float totalLength = 0;
float length;
Vector3 a, b;
for (int i = 0; i < len - 1; i++)
{
a = outerArcs[i].startVector;
b = outerArcs[i + 1].startVector;
length = Vector3.Distance(a, b);
totalLength += length;
distances[i + 1] = length;
}
length = 0;
float percent;
float uDelta = caps.u2 - caps.u1;
for (int i = 0; i < len; i++)
{
length += distances[i];
percent = length / totalLength;
us[i] = caps.u1 + percent * uDelta;
}
Vector3 leftNorm = new Vector3();
leftNorm.x = outerArcs[0].startVector.z;
leftNorm.z = -outerArcs[0].startVector.x;
leftNorm.Normalize();
Vector3 rightNorm = new Vector3();
rightNorm.x = outerArcs[0].endVector.z;
rightNorm.z = -outerArcs[0].endVector.x;
rightNorm.Normalize();
rightNorm = -rightNorm;//as faces get inverted for this side, so norms get inverted as well
//left
List<Vertex> outerStartVerts = new List<Vertex>();
List<Vertex> innerStartVerts = new List<Vertex>();
//right
List<Vertex> outerEndVerts = new List<Vertex>();
List<Vertex> innerEndVerts = new List<Vertex>();
len = outerArcs.Count;
Vector3 outer, inner;
Vector2 uv;
for (int i = 0; i < len; i++)
{
outer = outerArcs[i].startVector;
uv = new Vector2(us[i], caps.v1);
outerStartVerts.Add(builder.addVertex(outer, leftNorm, uv));
inner = innerArcs[i].startVector;
uv = new Vector2(us[i], caps.v2);
innerStartVerts.Add(builder.addVertex(inner, leftNorm, uv));
outer = outerArcs[i].endVector;
uv = new Vector2(us[i], caps.v1);
outerEndVerts.Add(builder.addVertex(outer, rightNorm, uv));
inner = innerArcs[i].endVector;
uv = new Vector2(us[i], caps.v2);
innerEndVerts.Add(builder.addVertex(inner, rightNorm, uv));
}
builder.generateQuads(outerStartVerts, innerStartVerts, false);
builder.generateQuads(outerEndVerts, innerEndVerts, true);
}
public List<Vertex> generateRadialVerticesFlatUVs(Vector3 offset, int faces, float radius, float height, float startAngle, float endAngle, float v, UVArea area, float yCos, float ySin)
{
List<Vertex> verts = new List<Vertex>();
float totalAngle = endAngle - startAngle;
float anglePerFace = 360f / faces;
int numOfFaces = (int)(totalAngle / anglePerFace);
float anglePerVert = totalAngle / (float)(numOfFaces + 1);
float angle, xCos, zSin, nx, ny, nz, x, y, z, percentTotalAngle;
for (int i = 0; i < numOfFaces + 1; i++)
{
angle = startAngle + anglePerFace * i;
percentTotalAngle = (angle - startAngle) / totalAngle;
xCos = Mathf.Cos(angle * Mathf.Deg2Rad);
zSin = Mathf.Sin(angle * Mathf.Deg2Rad);
x = xCos * radius + offset.x;
y = height + offset.y;
z = zSin * radius + offset.z;
nx = xCos * yCos;
ny = ySin;
nz = zSin * yCos;
verts.Add(addVertex(new Vector3(x, y, z), new Vector3(nx, ny, nz), new Vector2(area.getU(percentTotalAngle), v)));
}
return verts;
}
public void generateCylinderCap(Vector3 offset, int faces, float outerRadius, float innerRadius, float height, float startAngle, float endAngle, UVArea area, bool bottomCap)
{
float ySin = bottomCap ? -1 : 1;
List <Vertex> outerVerts = generateRadialVerticesCylinderUVs(offset, faces, outerRadius, height, startAngle, endAngle, area, outerRadius, 0, ySin);
if (innerRadius > 0)//partial cap
{
List <Vertex> innerVerts = generateRadialVerticesCylinderUVs(offset, faces, innerRadius, height, startAngle, endAngle, area, outerRadius, 0, ySin);
generateQuads(outerVerts, innerVerts, bottomCap);
}
else
{
Vector2 min = new Vector2(-outerRadius, -outerRadius);
Vector2 max = new Vector2(outerRadius, outerRadius);
Vector2 centerUV = area.getUV(min, max, new Vector2(0, 0));
Vertex center = addVertex(offset + new Vector3(0, height, 0), bottomCap ? Vector3.down : Vector3.up, centerUV);
generateTriangleFan(outerVerts, center, bottomCap);
}
}
public void generateCylinderCap(Vector3 offset, int faces, float outerRadius, float innerRadius, float height, float startAngle, float endAngle, UVArea area, bool bottomCap)
{
float ySin = bottomCap ? -1 : 1;
List<Vertex> outerVerts = generateRadialVerticesCylinderUVs(offset, faces, outerRadius, height, startAngle, endAngle, area, outerRadius, 0, ySin);
if (innerRadius > 0)//partial cap
{
List<Vertex> innerVerts = generateRadialVerticesCylinderUVs(offset, faces, innerRadius, height, startAngle, endAngle, area, outerRadius, 0, ySin);
generateQuads(outerVerts, innerVerts, bottomCap);
}
else
{
Vector2 min = new Vector2(-outerRadius, -outerRadius);
Vector2 max = new Vector2(outerRadius, outerRadius);
Vector2 centerUV = area.getUV(min, max, new Vector2(0, 0));
Vertex center = addVertex(offset + new Vector3(0, height, 0), bottomCap ? Vector3.down : Vector3.up, centerUV);
generateTriangleFan(outerVerts, center, bottomCap);
}
}
/// <summary>
/// Generates a ring of vertices using circular UV mapping, where the center of the ring is the center of the UV area.
/// This would be used to generate a partial ring, such as the procedural decoupler
/// Input radius is the radius of the actual ring, uvRadius is the radius to be used for maximal UV bounds
/// (e.g. they will only be different on an inner-ring; where radius=ring radius, and uvRadius = outerRingRadius)
/// </summary>
/// <param name="offset"></param>
/// <param name="faces"></param>
/// <param name="radius"></param>
/// <param name="height"></param>
/// <param name="startAngle"></param>
/// <param name="endAngle"></param>
/// <param name="area">The UV area to map the UV vertex to.</param>
/// <param name="uvRadius">The radius to be used for the UV area, in case it differs from the radius in use (basically scales the UV area)</param>
/// <param name="yCos">Determines the x/z normal component</param>
/// <param name="ySin">Used directly as the y normal component</param>
/// <returns></returns>
public List <Vertex> generateRadialVerticesCylinderUVs(Vector3 offset, int faces, float radius, float height, float startAngle, float endAngle, UVArea area, float uvRadius, float yCos, float ySin)
{
List <Vertex> verts = new List <Vertex>();
float startRad = startAngle * Mathf.Deg2Rad;
float endRad = endAngle * Mathf.Deg2Rad;
float totalRad = endRad - startRad;
float radPerFace = (2f * Mathf.PI) / faces;
//int numOfFaces = (int)(totalRad / radPerFace);
int numOfFaces = (int)Math.Round(totalRad / radPerFace, 0);
float rads, xCos, zSin, nx, nz, x, y, z;
Vector2 min = new Vector2(-uvRadius, -uvRadius);
Vector2 max = new Vector2(uvRadius, uvRadius);
Vector2 pos;
Vector2 uv;
//unchanging vars
y = height + offset.y;
for (int i = 0; i < numOfFaces + 1; i++)
{
rads = startRad + (radPerFace * i);
xCos = Mathf.Cos(rads);
zSin = Mathf.Sin(rads);
x = xCos * radius + offset.x;
z = zSin * radius + offset.z;
nx = xCos * yCos;
nz = zSin * yCos;
pos = new Vector2(xCos * radius, zSin * radius);
uv = area.getUV(min, max, pos);
verts.Add(addVertex(new Vector3(x, y, z), new Vector3(nx, ySin, nz), uv));
}
return(verts);
}
protected void generateFairingWallSection(MeshGenerator gen, UVArea capUV, UVArea panelUV, float startY, float totalHeight, float maxHeightPerPanel, float boltPanelHeight, float topRadius, float bottomRadius, int sides, float anglePerSide, float startAngle, bool outsideWall)
{
UVArea capUVCopy = new UVArea(capUV);
UVArea panelUVCopy = new UVArea(panelUV);
Vector2 start = new Vector2(bottomRadius, startY);//1.25, 0
Vector2 topOffset = new Vector2(topRadius - bottomRadius, totalHeight);
float vlen = topOffset.magnitude;
float capPercent = boltPanelHeight / vlen;
float fullPanelPercent = maxHeightPerPanel / vlen;
float panelHeight = vlen - boltPanelHeight*2.0f;
float height;
Vector2 pBottom;
Vector2 pTop;
if(boltPanelHeight>0)
{
//generate caps
float capVHeight = capUV.v2 - capUV.v1;
float capVScale = capVHeight / boltPanelHeight;
float capU = (bottomOuterCirc / (float)this.numOfPanels) * capVScale;
capUVCopy.u2 = capU;
//top cap
pBottom = start;
pTop = start + (topOffset * capPercent);
height = pTop.y - pBottom.y;
gen.setUVArea(capUVCopy);
gen.generateCylinderWallSection(centerX, centerZ, pBottom.y, height, pTop.x, pBottom.x, sides, anglePerSide, startAngle, outsideWall);
capU = (topOuterCirc / (float)this.numOfPanels) * capVScale;
capUVCopy.u2 = capU;
//bottom cap
pBottom = start + topOffset - (topOffset*capPercent);
pTop = start + topOffset;
height = pTop.y - pBottom.y;
gen.setUVArea(capUVCopy);
gen.generateCylinderWallSection(centerX, centerZ, pBottom.y, height, pTop.x, pBottom.x, sides, anglePerSide, startAngle, outsideWall);
}
//generate panels
//setup UV scaling for full height panels
float panelVHeight = panelUV.v2 - panelUV.v1;
float panelVScale = panelVHeight / maxHeightPerPanel;
float panelU = (bottomOuterCirc / (float)this.numOfPanels) * panelVScale;
panelUVCopy.u2 = panelU;//scale the u2 coordinate (right-hand extent) by the scale factor, to setup a 1:1 texture ratio across the panel
gen.setUVArea(panelUVCopy);
// modulus operation to get the whole and remainder
float extraPanelHeight = panelHeight / maxHeightPerPanel;
int numOfVerticalSections = (int)extraPanelHeight;
extraPanelHeight-=numOfVerticalSections;
pBottom = start + (topOffset * capPercent);
for(int i = 0; i<numOfVerticalSections; i++)//generate full panels
{
pTop = pBottom + (fullPanelPercent * topOffset);
height = pTop.y - pBottom.y;
gen.generateCylinderWallSection(centerX, centerZ, pBottom.y, height, pTop.x, pBottom.x, sides, anglePerSide, startAngle, outsideWall);
//increment for next full panel
pBottom = pTop;
}
if(extraPanelHeight>0)//gen extra partial panel if needed
{
//gen 'extra' panel
//setup UV scaling for partial height panel, both u and V;
panelVHeight = panelUV.v2 - panelUV.v1;
panelVScale = panelVHeight / maxHeightPerPanel;
panelU = (bottomOuterCirc / (float)this.numOfPanels) * panelVScale;
panelUVCopy.u2 = panelU;//scale u area
float panelV = panelUVCopy.v1 + panelVScale * extraPanelHeight;
panelUVCopy.v2 = panelV;//scale v area
float extraPanelPercent = extraPanelHeight / vlen;
pTop = pBottom + (extraPanelPercent * topOffset);
height = pTop.y - pBottom.y;
gen.setUVArea(panelUVCopy);
gen.generateCylinderWallSection(centerX, centerZ, pBottom.y, height, pTop.x, pBottom.x, sides, anglePerSide, startAngle, outsideWall);
}
}
/// <summary>
/// Used to generate a ring of vertices with the uvMapping appropriate for a cylinder wall (increments in +x)
/// </summary>
/// <param name="offset"></param>
/// <param name="faces"></param>
/// <param name="radius"></param>
/// <param name="height"></param>
/// <param name="startAngle"></param>
/// <param name="endAngle"></param>
/// <param name="v"></param>
/// <param name="area"></param>
/// <param name="yCos"></param>
/// <param name="ySin"></param>
/// <returns></returns>
public List <Vertex> generateRadialVerticesFlatUVs(Vector3 offset, int faces, float radius, float height, float startAngle, float endAngle, float v, UVArea area, float yCos, float ySin)
{
List <Vertex> verts = new List <Vertex>();
float startRad = startAngle * Mathf.Deg2Rad;
float endRad = endAngle * Mathf.Deg2Rad;
float totalRad = endRad - startRad;
float radPerFace = (float)((2.0 * Math.PI) / faces);
float radPerSub = radPerFace / subdivision;
int numOfFaces = (int)Math.Round(totalRad / radPerFace, 0);
float rads, xCos, zSin, nx, ny, nz, x, y, z, percentTotalAngle;
float subRads, x2 = 0, z2 = 0, x3, z3, xCos2 = 0, zSin2 = 0, nextRads = 0, nextPerc = 0, subPerc, lerp;
y = height + offset.y;
ny = ySin;
for (int i = 0; i < numOfFaces + 1; i++)
{
if (i > 0)//vars were caled last round for the interpolation
{
rads = nextRads;
percentTotalAngle = nextPerc;
xCos = xCos2;
zSin = zSin2;
x = x2;
z = z2;
}
else
{
rads = startRad + (radPerFace * i);
percentTotalAngle = (rads - startRad) / totalRad;
xCos = Mathf.Cos(rads);
zSin = Mathf.Sin(rads);
x = xCos * radius + offset.x;
z = zSin * radius + offset.z;
}
nx = xCos * yCos;
nz = zSin * yCos;
verts.Add(addVertex(new Vector3(x, y, z), new Vector3(nx, ny, nz), new Vector2(area.getU(percentTotalAngle), v)));
//calculate the points/etc for the next panel face, to lerp between positions; data is re-used next iteration if present
nextRads = startRad + (radPerFace * (i + 1));
nextPerc = (nextRads - startRad) / totalRad;
xCos2 = Mathf.Cos(nextRads);
zSin2 = Mathf.Sin(nextRads);
x2 = xCos2 * radius + offset.x;
z2 = zSin2 * radius + offset.z;
//do not add subdivision panel if the next vertex is the last one in the ring
if (i == numOfFaces)
{
break;
}
//if was the last vert... do not add subs
for (int k = 1; k < subdivision; k++)
{
lerp = (float)k / subdivision;
x3 = Mathf.Lerp(x, x2, lerp);
z3 = Mathf.Lerp(z, z2, lerp);
subRads = rads + (radPerSub * k);//subangle used for normal calc... position calculated from interpolation to maintain cylinder side matching
subPerc = (subRads - startRad) / totalRad;
xCos = Mathf.Cos(subRads);
zSin = Mathf.Sin(subRads);
nx = xCos * yCos;
nz = zSin * yCos;
verts.Add(addVertex(new Vector3(x3, y, z3), new Vector3(nx, ny, nz), new Vector2(area.getU(subPerc), v)));
}
}
return(verts);
}