@Override
public void setupRendererLights(RendererLights zlights, boolean isGammaInput) {
Float32Array hemiSkyColors = zlights.hemi.skyColors;
Float32Array hemiGroundColors = zlights.hemi.groundColors;
Float32Array hemiPositions = zlights.hemi.positions;
Color skyColor = getColor();
Color groundColor = getGroundColor();
double intensity = getIntensity();
int hemiOffset = hemiSkyColors.getLength() * 3;
if (isGammaInput) {
setColorGamma(hemiSkyColors, hemiOffset, skyColor, intensity);
setColorGamma(hemiGroundColors, hemiOffset, groundColor, intensity);
} else {
setColorLinear(hemiSkyColors, hemiOffset, skyColor, intensity);
setColorLinear(hemiGroundColors, hemiOffset, groundColor, intensity);
}
Vector3 _direction = new Vector3();
_direction.setFromMatrixPosition(getMatrixWorld());
_direction.normalize();
hemiPositions.set(hemiOffset, _direction.getX());
hemiPositions.set(hemiOffset + 1, _direction.getY());
hemiPositions.set(hemiOffset + 2, _direction.getZ());
}
public CylinderGeometry(
double radiusTop,
double radiusBottom,
double height,
int radialSegments,
int heightSegments,
boolean openEnded,
double thetaStart,
double thetaLength) {
super();
double heightHalf = height / 2.0;
// int segmentsX = radialSegments;
// int segmentsY = heightSegments;
int x = 0, y = 0;
List<List<Integer>> vertices = new ArrayList<List<Integer>>();
List<List<Vector2>> uvs = new ArrayList<List<Vector2>>();
for (y = 0; y <= heightSegments; y++) {
List<Integer> verticesRow = new ArrayList<Integer>();
List<Vector2> uvsRow = new ArrayList<Vector2>();
double v = (double) y / (double) heightSegments;
double radius = v * (radiusBottom - radiusTop) + radiusTop;
for (x = 0; x <= radialSegments; x++) {
double u = (double) x / (double) radialSegments;
Vector3 vertex = new Vector3();
vertex.setX(radius * Math.sin(u * thetaLength + thetaStart));
vertex.setY(-v * height + heightHalf);
vertex.setZ(radius * Math.cos(u * thetaLength + thetaStart));
getVertices().add(vertex);
verticesRow.add(getVertices().size() - 1);
uvsRow.add(new Vector2(u, 1 - v));
}
vertices.add(verticesRow);
uvs.add(uvsRow);
}
double tanTheta = (radiusBottom - radiusTop) / height;
Vector3 na, nb;
for (x = 0; x < radialSegments; x++) {
if (radiusTop != 0) {
na = getVertices().get(vertices.get(0).get(x)).clone();
nb = getVertices().get(vertices.get(0).get(x + 1)).clone();
} else {
na = getVertices().get(vertices.get(1).get(x)).clone();
nb = getVertices().get(vertices.get(1).get(x + 1)).clone();
}
na.setY(Math.sqrt(na.getX() * na.getX() + na.getZ() * na.getZ()) * tanTheta);
na.normalize();
nb.setY(Math.sqrt(nb.getX() * nb.getX() + nb.getZ() * nb.getZ()) * tanTheta);
nb.normalize();
for (y = 0; y < heightSegments; y++) {
int v1 = vertices.get(y).get(x);
int v2 = vertices.get(y + 1).get(x);
int v3 = vertices.get(y + 1).get(x + 1);
int v4 = vertices.get(y).get(x + 1);
Vector3 n1 = na.clone();
Vector3 n2 = na.clone();
Vector3 n3 = nb.clone();
Vector3 n4 = nb.clone();
Vector2 uv1 = uvs.get(y).get(x).clone();
Vector2 uv2 = uvs.get(y + 1).get(x).clone();
Vector2 uv3 = uvs.get(y + 1).get(x + 1).clone();
Vector2 uv4 = uvs.get(y).get(x + 1).clone();
this.getFaces().add(new Face3(v1, v2, v4, Arrays.asList(n1, n2, n4)));
this.getFaceVertexUvs().get(0).add(Arrays.asList(uv1, uv2, uv4));
this.getFaces().add(new Face3(v2, v3, v4, Arrays.asList(n2.clone(), n3, n4.clone())));
this.getFaceVertexUvs().get(0).add(Arrays.asList(uv2.clone(), uv3, uv4.clone()));
}
}
// top cap
if (!openEnded && radiusTop > 0) {
getVertices().add(new Vector3(0.0, heightHalf, 0.0));
for (x = 0; x < radialSegments; x++) {
int v1 = vertices.get(0).get(x);
int v2 = vertices.get(0).get(x + 1);
int v3 = getVertices().size() - 1;
Vector3 n1 = new Vector3(0, 1, 0);
Vector3 n2 = new Vector3(0, 1, 0);
Vector3 n3 = new Vector3(0, 1, 0);
Vector2 uv1 = uvs.get(0).get(x).clone();
Vector2 uv2 = uvs.get(0).get(x + 1).clone();
Vector2 uv3 = new Vector2(uv2.getX(), 0);
getFaces().add(new Face3(v1, v2, v3, Arrays.asList(n1, n2, n3)));
getFaceVertexUvs().get(0).add(Arrays.asList(uv1, uv2, uv3));
}
}
// bottom cap
if (!openEnded && radiusBottom > 0) {
getVertices().add(new Vector3(0, -heightHalf, 0));
for (x = 0; x < radialSegments; x++) {
int v1 = vertices.get(y).get(x + 1);
int v2 = vertices.get(y).get(x);
int v3 = getVertices().size() - 1;
Vector3 n1 = new Vector3(0.0, -1.0, 0.0);
Vector3 n2 = new Vector3(0.0, -1.0, 0.0);
Vector3 n3 = new Vector3(0.0, -1.0, 0.0);
Vector2 uv1 = uvs.get(y).get(x + 1).clone();
Vector2 uv2 = uvs.get(y).get(x).clone();
Vector2 uv3 = new Vector2(uv2.getX(), 1);
getFaces().add(new Face3(v1, v2, v3, Arrays.asList(n1, n2, n3)));
getFaceVertexUvs().get(0).add(Arrays.asList(uv1, uv2, uv3));
}
}
computeFaceNormals();
}
