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This commit is contained in:
cola98765
2021-10-10 11:16:54 +02:00
parent ecb01c731e
commit 6c2b707c02
1 changed files with 38 additions and 40 deletions
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src/main/java/com/seibel/lod/render/RenderUtil.java
+38 -40
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@@ -15,15 +15,13 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.seibel.lod.render;
import com.seibel.lod.config.LodConfig;
import com.seibel.lod.enums.LodTemplate;
import com.seibel.lod.objects.LodRegion;
import com.seibel.lod.util.DetailDistanceUtil;
import com.seibel.lod.util.LodUtil;
import com.seibel.lod.wrappers.MinecraftWrapper;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.ChunkPos;
import net.minecraft.util.math.vector.Vector3d;
@@ -31,7 +29,7 @@ import net.minecraft.util.math.vector.Vector3d;
/**
* This holds miscellaneous helper code
* to be used in the rendering process.
*
*
* @author James Seibel
* @version 8-21-2021
*/
@@ -46,11 +44,11 @@ public class RenderUtil
*/
public static boolean isChunkPosInLoadedArea(ChunkPos pos, ChunkPos center)
{
return (pos.x >= center.x - mc.getRenderDistance()
&& pos.x <= center.x + mc.getRenderDistance())
&&
(pos.z >= center.z - mc.getRenderDistance()
&& pos.z <= center.z + mc.getRenderDistance());
return (pos.x >= center.x - mc.getRenderDistance()
&& pos.x <= center.x + mc.getRenderDistance())
&&
(pos.z >= center.z - mc.getRenderDistance()
&& pos.z <= center.z + mc.getRenderDistance());
}
/**
@@ -59,11 +57,11 @@ public class RenderUtil
*/
public static boolean isCoordinateInLoadedArea(int x, int z, int centerCoordinate)
{
return (x >= centerCoordinate - mc.getRenderDistance()
&& x <= centerCoordinate + mc.getRenderDistance())
&&
(z >= centerCoordinate - mc.getRenderDistance()
&& z <= centerCoordinate + mc.getRenderDistance());
return (x >= centerCoordinate - mc.getRenderDistance()
&& x <= centerCoordinate + mc.getRenderDistance())
&&
(z >= centerCoordinate - mc.getRenderDistance()
&& z <= centerCoordinate + mc.getRenderDistance());
}
@@ -75,17 +73,17 @@ public class RenderUtil
{
int halfRadius = lodRadius / 2;
return (i >= lodRadius - halfRadius
&& i <= lodRadius + halfRadius)
&&
return (i >= lodRadius - halfRadius
&& i <= lodRadius + halfRadius)
&&
(j >= lodRadius - halfRadius
&& j <= lodRadius + halfRadius);
&& j <= lodRadius + halfRadius);
}
/**
* Get how much buffer memory would be required for the given radius multiplier
*
*
* issue #62
* TODO check if this is actually returning the correct memory needed
* it is possible (albeit unlikely) to have a buffer indexOutOfBounds exception
@@ -116,37 +114,37 @@ public class RenderUtil
*/
public static boolean isRegionInViewFrustum(BlockPos playerBlockPos, Vector3d cameraDir, BlockPos vboCenterPos)
{
// convert the vbo position into a direction vector
// starting from the player's position
// convert the vbo position into a direction vector
// starting from the player's position
Vector3d vboVec = new Vector3d(vboCenterPos.getX(), 0, vboCenterPos.getZ());
Vector3d playerVec = new Vector3d(playerBlockPos.getX(), playerBlockPos.getY(), playerBlockPos.getZ());
Vector3d vboCenterVec = vboVec.subtract(playerVec);
int halfRegionWidth = LodUtil.REGION_WIDTH / 2;
// calculate the 4 corners
Vector3d vboSeVec = new Vector3d(vboCenterVec.x + halfRegionWidth, vboCenterVec.y, vboCenterVec.z + halfRegionWidth);//.normalize();
Vector3d vboSwVec = new Vector3d(vboCenterVec.x - halfRegionWidth, vboCenterVec.y, vboCenterVec.z + halfRegionWidth);//.normalize();
Vector3d vboNwVec = new Vector3d(vboCenterVec.x - halfRegionWidth, vboCenterVec.y, vboCenterVec.z - halfRegionWidth);//.normalize();
Vector3d vboNeVec = new Vector3d(vboCenterVec.x + halfRegionWidth, vboCenterVec.y, vboCenterVec.z - halfRegionWidth);//.normalize();
// if any corner is visible, this region should be rendered
return isNormalizedVectorInViewFrustum(vboSeVec, cameraDir) ||
isNormalizedVectorInViewFrustum(vboSwVec, cameraDir) ||
isNormalizedVectorInViewFrustum(vboNwVec, cameraDir) ||
isNormalizedVectorInViewFrustum(vboNeVec, cameraDir);
int halfRegionWidth = LodUtil.REGION_WIDTH / 2;
// calculate the 4 corners
Vector3d vboSeVec = new Vector3d(vboCenterVec.x + halfRegionWidth, vboCenterVec.y, vboCenterVec.z + halfRegionWidth);//.normalize();
Vector3d vboSwVec = new Vector3d(vboCenterVec.x - halfRegionWidth, vboCenterVec.y, vboCenterVec.z + halfRegionWidth);//.normalize();
Vector3d vboNwVec = new Vector3d(vboCenterVec.x - halfRegionWidth, vboCenterVec.y, vboCenterVec.z - halfRegionWidth);//.normalize();
Vector3d vboNeVec = new Vector3d(vboCenterVec.x + halfRegionWidth, vboCenterVec.y, vboCenterVec.z - halfRegionWidth);//.normalize();
// if any corner is visible, this region should be rendered
return isNormalizedVectorInViewFrustum(vboSeVec, cameraDir) ||
isNormalizedVectorInViewFrustum(vboSwVec, cameraDir) ||
isNormalizedVectorInViewFrustum(vboNwVec, cameraDir) ||
isNormalizedVectorInViewFrustum(vboNeVec, cameraDir);
}
/**
* Currently takes the dot product of the two vectors,
* but in the future could do more complicated frustum culling tests.
*/
private static boolean isNormalizedVectorInViewFrustum(Vector3d objectVector, Vector3d cameraDir)
private static boolean isNormalizedVectorInViewFrustum(Vector3d objectVector, Vector3d cameraDir)
{
// the -0.1 is to offer a slight buffer, so we are
// more likely to render LODs and thus, hopefully prevent
// flickering or odd disappearances
return objectVector.dot(cameraDir) > -0.1;
// the -0.1 is to offer a slight buffer, so we are
// more likely to render LODs and thus, hopefully prevent
// flickering or odd disappearances
return objectVector.dot(cameraDir) > -0.1;
}
}