diff --git a/jme3-core/src/main/java/com/jme3/scene/shape/Curve.java b/jme3-core/src/main/java/com/jme3/scene/shape/Curve.java index 009b41c64..d6eb8dc20 100644 --- a/jme3-core/src/main/java/com/jme3/scene/shape/Curve.java +++ b/jme3-core/src/main/java/com/jme3/scene/shape/Curve.java @@ -198,35 +198,42 @@ public class Curve extends Mesh { * points */ private void createNurbMesh(int nbSubSegments) { - float minKnot = spline.getMinNurbKnot(); - float maxKnot = spline.getMaxNurbKnot(); - float deltaU = (maxKnot - minKnot) / nbSubSegments; + if(spline.getControlPoints() != null && spline.getControlPoints().size() > 0) { + if(nbSubSegments == 0) { + nbSubSegments = spline.getControlPoints().size() + 1; + } else { + nbSubSegments = spline.getControlPoints().size() * nbSubSegments + 1; + } + float minKnot = spline.getMinNurbKnot(); + float maxKnot = spline.getMaxNurbKnot(); + float deltaU = (maxKnot - minKnot) / nbSubSegments; - float[] array = new float[(nbSubSegments + 1) * 3]; + float[] array = new float[(nbSubSegments + 1) * 3]; - float u = minKnot; - Vector3f interpolationResult = new Vector3f(); - for (int i = 0; i < array.length; i += 3) { - spline.interpolate(u, 0, interpolationResult); - array[i] = interpolationResult.x; - array[i + 1] = interpolationResult.y; - array[i + 2] = interpolationResult.z; - u += deltaU; - } + float u = minKnot; + Vector3f interpolationResult = new Vector3f(); + for (int i = 0; i < array.length; i += 3) { + spline.interpolate(u, 0, interpolationResult); + array[i] = interpolationResult.x; + array[i + 1] = interpolationResult.y; + array[i + 2] = interpolationResult.z; + u += deltaU; + } - //calculating indexes - int i = 0; - short[] indices = new short[nbSubSegments << 1]; - for (int j = 0; j < nbSubSegments; ++j) { - indices[i++] = (short) j; - indices[i++] = (short) (j + 1); - } + //calculating indexes + int i = 0; + short[] indices = new short[nbSubSegments << 1]; + for (int j = 0; j < nbSubSegments; ++j) { + indices[i++] = (short) j; + indices[i++] = (short) (j + 1); + } - this.setMode(Mesh.Mode.Lines); - this.setBuffer(VertexBuffer.Type.Position, 3, array); - this.setBuffer(VertexBuffer.Type.Index, 2, indices); - this.updateBound(); - this.updateCounts(); + this.setMode(Mesh.Mode.Lines); + this.setBuffer(VertexBuffer.Type.Position, 3, array); + this.setBuffer(VertexBuffer.Type.Index, 2, indices); + this.updateBound(); + this.updateCounts(); + } } private void createLinearMesh() {