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Fix skillion calculation on triangles

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This commit is contained in:
Gustl22 2018-02-20 12:08:35 +01:00
parent f1570a9531
commit 884f524fb1
1 changed files with 31 additions and 12 deletions
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43
vtm/src/org/oscim/layers/tile/buildings/S3DBUtils.java
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@ -976,8 +976,11 @@ public final class S3DBUtils {
boolean hasOutlines = calcOutlines(specialParts, minHeight, maxHeight);
// Use 3 points that match the angle the best and use as plane
float[] min = null, max1 = null, max2 = null;
float minDif = Float.MAX_VALUE, maxDif1 = 0, maxDif2 = 0;
float[] min1 = null, min2 = null, max1 = null, max2 = null;
float minDif1, minDif2, maxDif1, maxDif2;
minDif1 = minDif2 = Float.MAX_VALUE;
maxDif1 = maxDif2 = 0;
if (calcFlatMesh(element, maxHeight)) {
// To positive radian
roofDegree = ((MathUtils.degreesToRadians * roofDegree) + MathUtils.PI2) % MathUtils.PI2;
@ -1002,20 +1005,36 @@ public final class S3DBUtils {
max2 = point;
maxDif2 = currentDiff;
}
if (min == null || currentDiff < minDif) {
min = point;
minDif = currentDiff;
if (min1 == null || currentDiff < minDif1) {
if (min1 != null) {
min2 = min1;
minDif2 = minDif1;
}
min1 = point;
minDif1 = currentDiff;
} else if (min2 == null || currentDiff < minDif2) {
min2 = point;
minDif2 = currentDiff;
}
}
if (min == max1) return false;
if (min1 == max1) return false;
// Calc intersection points of ground points with plane of the three points
float[] zVector = new float[]{0, 0, 1}; // Calc only height intersection
min[2] = minHeight;
max1[2] = max2[2] = maxHeight;
float[] normal = GeometryUtils.normalOfPlane(min, max1, max2);
float[] normal, zVector = new float[]{0, 0, 1}; // height intersection
min1[2] = minHeight;
max1[2] = maxHeight;
// Use lower two points if they promise better results (e.g. at triangles)
if (Math.abs(minDif2 - minDif1) < Math.abs(maxDif2 - maxDif1)) {
min2[2] = minHeight; // Note: min2 == max2 is possible
normal = GeometryUtils.normalOfPlane(min1, max1, min2);
} else {
max2[2] = maxHeight;
normal = GeometryUtils.normalOfPlane(min1, max1, max2);
}
// Calc intersection points of ground points with plane
for (int k = 0; k < point3Fs.size(); k++) {
float[] intersection = GeometryUtils.intersectionLinePlane(point3Fs.get(k), zVector, min, normal);
float[] intersection = GeometryUtils.intersectionLinePlane(point3Fs.get(k), zVector, min1, normal);
if (intersection == null) return false;
intersection[2] = intersection[2] > (2 * maxHeight) ? maxHeight : (intersection[2] < minHeight ? minHeight : intersection[2]);
element.points[3 * k + 2] = intersection[2];