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PolygonBucket: reenable per bucket visibility test

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This commit is contained in:
Hannes Janetzek 2014-09-20 00:19:23 +02:00
parent 33c48b3d53
commit c632b865b0
2 changed files with 55 additions and 40 deletions
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88
vtm/src/org/oscim/renderer/bucket/PolygonBucket.java
View File

@ -40,6 +40,7 @@ import org.oscim.renderer.GLUtils;
import org.oscim.renderer.GLViewport;
import org.oscim.renderer.MapRenderer;
import org.oscim.theme.styles.AreaStyle;
import org.oscim.utils.ArrayUtils;
import org.oscim.utils.geom.LineClipper;
import org.oscim.utils.math.Interpolation;
import org.slf4j.Logger;
@ -75,7 +76,8 @@ public final class PolygonBucket extends RenderBucket {
float ymin = Short.MAX_VALUE;
float xmax = Short.MIN_VALUE;
float ymax = Short.MIN_VALUE;
float[] bbox = new float[8];
final float[] bbox = new float[8];
public void addPolygon(float[] points, int[] index) {
short center = (short) ((Tile.SIZE >> 1) * S);
@ -101,15 +103,10 @@ public final class PolygonBucket extends RenderBucket {
for (int j = 0; j < length; j += 2) {
float x = (points[inPos++] * S);
float y = (points[inPos++] * S);
if (x > xmax)
xmax = x;
if (x < xmin)
xmin = x;
if (y > ymax)
ymax = y;
if (y < ymin)
ymin = y;
xmax = Math.max(xmax, x);
xmin = Math.min(xmin, x);
ymax = Math.max(ymax, y);
ymin = Math.min(ymin, y);
if (outline) {
indiceItems.add((short) numVertices);
@ -133,29 +130,20 @@ public final class PolygonBucket extends RenderBucket {
}
}
// FIXME move to prepare
@Override
protected void prepare() {
ArrayUtils.setBox2D(bbox, xmin, ymin, xmax, ymax);
}
@Override
protected void compile(ShortBuffer vboData, ShortBuffer iboData) {
if (area.strokeWidth == 0) {
/* add vertices to shared VBO */
compileVertexItems(vboData);
return;
} else {
/* compile with indexed outline */
super.compile(vboData, iboData);
}
bbox[0] = xmin;
bbox[1] = ymin;
bbox[2] = xmax;
bbox[3] = ymin;
bbox[4] = xmax;
bbox[5] = ymax;
bbox[6] = xmin;
bbox[7] = xmax;
/* compile with indexed outline */
super.compile(vboData, iboData);
}
static class Shader extends GLShader {
@ -361,6 +349,8 @@ public final class PolygonBucket extends RenderBucket {
byte stencilMask = 0;
float[] box = mBBox;
RenderBucket b = buckets;
for (; b != null && b.type == POLYGON; b = b.next) {
PolygonBucket pb = (PolygonBucket) b;
@ -370,19 +360,37 @@ public final class PolygonBucket extends RenderBucket {
if (area.fadeScale > 0 && area.fadeScale > zoom)
continue;
// v.mvp.prj2D(pl.bbox, 0, mBBox, 0, 4);
// mScreenClip.clipStart(mBBox[0], mBBox[1]);
//
// if (mScreenClip.clipNext(mBBox[2], mBBox[3]) == 0 &&
// mScreenClip.clipNext(mBBox[4], mBBox[5]) == 0 &&
// mScreenClip.clipNext(mBBox[6], mBBox[7]) == 0 &&
// mScreenClip.clipNext(mBBox[0], mBBox[1]) == 0) {
//
// /* check the very unlikely case where the view might be
// * completly contained within mBBox */
// if (!ArrayUtils.withinRange(mBBox, -1f, 1f))
// continue;
// }
v.mvp.prj2D(pb.bbox, 0, box, 0, 4);
boolean clipRect = true;
int out = 0;
for (int i = 0; i < 8; i += 2) {
int o = mScreenClip.outcode(box[i], box[i + 1]);
if (o == 0) {
/* at least one corner is inside */
clipRect = false;
break;
}
out |= o;
}
/* Check if any polygon-bucket edge intersects the screen.
* Also check the very unlikely case where the view might be
* completly contained within box */
if (clipRect && (out != 0xF)) {
mScreenClip.clipStart(box[0], box[1]);
if (mScreenClip.clipNext(box[2], box[3]) == 0 &&
mScreenClip.clipNext(box[4], box[5]) == 0 &&
mScreenClip.clipNext(box[6], box[7]) == 0 &&
mScreenClip.clipNext(box[0], box[1]) == 0) {
// log.debug("outside {} {} {}", out,
// Arrays.toString(box),
// Arrays.toString(pb.bbox));
continue;
}
}
if (mClear) {
clearStencilRegion();

7
vtm/src/org/oscim/utils/ArrayUtils.java
View File

@ -147,4 +147,11 @@ public class ArrayUtils {
}
return true;
}
public static void setBox2D(float[] bbox, float xmin, float ymin, float xmax, float ymax) {
bbox[0] = bbox[2] = xmin;
bbox[4] = bbox[6] = xmax;
bbox[1] = bbox[5] = ymin;
bbox[3] = bbox[7] = ymax;
}
}