Add toggles for heightfield filtering

pboyer · Jan 12, 2017 · 12e8950 · 12e8950
1 parent a2e16b8
commit 12e8950
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Showing 4 changed files with 29 additions and 7 deletions.
diff --git a/RecastDemo/Include/Sample.h b/RecastDemo/Include/Sample.h
@@ -114,6 +114,10 @@ class Sample
 	float m_detailSampleDist;
 	float m_detailSampleMaxError;
 	int m_partitionType;
+
+	bool m_filterLowHangingObstacles;
+	bool m_filterLedgeSpans;
+	bool m_filterWalkableLowHeightSpans;
 
 	SampleTool* m_tool;
 	SampleToolState* m_toolStates[MAX_TOOLS];

diff --git a/RecastDemo/Source/Sample.cpp b/RecastDemo/Source/Sample.cpp
@@ -42,7 +42,10 @@ Sample::Sample() :
 	m_crowd(0),
 	m_navMeshDrawFlags(DU_DRAWNAVMESH_OFFMESHCONS|DU_DRAWNAVMESH_CLOSEDLIST),
 	m_tool(0),
-	m_ctx(0)
+	m_ctx(0),
+	m_filterLowHangingObstacles(true),
+	m_filterLedgeSpans(true),
+	m_filterWalkableLowHeightSpans(true)
 {
 	resetCommonSettings();
 	m_navQuery = dtAllocNavMeshQuery();
@@ -201,6 +204,15 @@ void Sample::handleCommonSettings()
 	if (imguiCheck("Layers", m_partitionType == SAMPLE_PARTITION_LAYERS))
 		m_partitionType = SAMPLE_PARTITION_LAYERS;
 
+	imguiSeparator();
+	imguiLabel("Filtering");
+	if (imguiCheck("Low Hanging Obstacles", m_filterLowHangingObstacles))
+		m_filterLowHangingObstacles = !m_filterLowHangingObstacles;
+	if (imguiCheck("Ledge Spans", m_filterLedgeSpans))
+		m_filterLedgeSpans= !m_filterLedgeSpans;
+	if (imguiCheck("Walkable Low Height Spans", m_filterWalkableLowHeightSpans))
+		m_filterWalkableLowHeightSpans = !m_filterWalkableLowHeightSpans;
+
 	imguiSeparator();
 	imguiLabel("Polygonization");
 	imguiSlider("Max Edge Length", &m_edgeMaxLen, 0.0f, 50.0f, 1.0f);

diff --git a/RecastDemo/Source/Sample_SoloMesh.cpp b/RecastDemo/Source/Sample_SoloMesh.cpp
@@ -457,9 +457,12 @@ bool Sample_SoloMesh::handleBuild()
 	// Once all geoemtry is rasterized, we do initial pass of filtering to
 	// remove unwanted overhangs caused by the conservative rasterization
 	// as well as filter spans where the character cannot possibly stand.
-	rcFilterLowHangingWalkableObstacles(m_ctx, m_cfg.walkableClimb, *m_solid);
-	rcFilterLedgeSpans(m_ctx, m_cfg.walkableHeight, m_cfg.walkableClimb, *m_solid);
-	rcFilterWalkableLowHeightSpans(m_ctx, m_cfg.walkableHeight, *m_solid);
+	if (m_filterLowHangingObstacles)
+		rcFilterLowHangingWalkableObstacles(m_ctx, m_cfg.walkableClimb, *m_solid);
+	if (m_filterLedgeSpans)
+		rcFilterLedgeSpans(m_ctx, m_cfg.walkableHeight, m_cfg.walkableClimb, *m_solid);
+	if (m_filterWalkableLowHeightSpans)
+		rcFilterWalkableLowHeightSpans(m_ctx, m_cfg.walkableHeight, *m_solid);
 
 
 	//

diff --git a/RecastDemo/Source/Sample_TileMesh.cpp b/RecastDemo/Source/Sample_TileMesh.cpp
@@ -1056,9 +1056,12 @@ unsigned char* Sample_TileMesh::buildTileMesh(const int tx, const int ty, const
 	// Once all geometry is rasterized, we do initial pass of filtering to
 	// remove unwanted overhangs caused by the conservative rasterization
 	// as well as filter spans where the character cannot possibly stand.
-	rcFilterLowHangingWalkableObstacles(m_ctx, m_cfg.walkableClimb, *m_solid);
-	rcFilterLedgeSpans(m_ctx, m_cfg.walkableHeight, m_cfg.walkableClimb, *m_solid);
-	rcFilterWalkableLowHeightSpans(m_ctx, m_cfg.walkableHeight, *m_solid);
+	if (m_filterLowHangingObstacles)
+		rcFilterLowHangingWalkableObstacles(m_ctx, m_cfg.walkableClimb, *m_solid);
+	if (m_filterLedgeSpans)
+		rcFilterLedgeSpans(m_ctx, m_cfg.walkableHeight, m_cfg.walkableClimb, *m_solid);
+	if (m_filterWalkableLowHeightSpans)
+		rcFilterWalkableLowHeightSpans(m_ctx, m_cfg.walkableHeight, *m_solid);
 
 	// Compact the heightfield so that it is faster to handle from now on.
 	// This will result more cache coherent data as well as the neighbours