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-rw-r--r--src/mesh.cpp162
1 files changed, 87 insertions, 75 deletions
diff --git a/src/mesh.cpp b/src/mesh.cpp
index b68862d22..3ab67510a 100644
--- a/src/mesh.cpp
+++ b/src/mesh.cpp
@@ -33,13 +33,33 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#define MY_ETLM_READ_ONLY video::ETLM_READ_ONLY
#endif
-static void applyFacesShading(video::SColor& color, float factor)
+inline static void applyShadeFactor(video::SColor& color, float factor)
{
color.setRed(core::clamp(core::round32(color.getRed()*factor), 0, 255));
color.setGreen(core::clamp(core::round32(color.getGreen()*factor), 0, 255));
color.setBlue(core::clamp(core::round32(color.getBlue()*factor), 0, 255));
}
+void applyFacesShading(video::SColor &color, const v3f &normal)
+{
+ /*
+ Some drawtypes have normals set to (0, 0, 0), this must result in
+ maximum brightness: shade factor 1.0.
+ Shade factors for aligned cube faces are:
+ +Y 1.000000 sqrt(1.0)
+ -Y 0.447213 sqrt(0.2)
+ +-X 0.670820 sqrt(0.45)
+ +-Z 0.836660 sqrt(0.7)
+ */
+ float x2 = normal.X * normal.X;
+ float y2 = normal.Y * normal.Y;
+ float z2 = normal.Z * normal.Z;
+ if (normal.Y < 0)
+ applyShadeFactor(color, 0.670820f * x2 + 0.447213f * y2 + 0.836660f * z2);
+ else if ((x2 > 1e-3) || (z2 > 1e-3))
+ applyShadeFactor(color, 0.670820f * x2 + 1.000000f * y2 + 0.836660f * z2);
+}
+
scene::IAnimatedMesh* createCubeMesh(v3f scale)
{
video::SColor c(255,255,255,255);
@@ -155,6 +175,14 @@ void translateMesh(scene::IMesh *mesh, v3f vec)
mesh->setBoundingBox(bbox);
}
+void setMeshBufferColor(scene::IMeshBuffer *buf, const video::SColor &color)
+{
+ const u32 stride = getVertexPitchFromType(buf->getVertexType());
+ u32 vertex_count = buf->getVertexCount();
+ u8 *vertices = (u8 *) buf->getVertices();
+ for (u32 i = 0; i < vertex_count; i++)
+ ((video::S3DVertex *) (vertices + i * stride))->Color = color;
+}
void setMeshColor(scene::IMesh *mesh, const video::SColor &color)
{
@@ -162,42 +190,22 @@ void setMeshColor(scene::IMesh *mesh, const video::SColor &color)
return;
u32 mc = mesh->getMeshBufferCount();
- for (u32 j = 0; j < mc; j++) {
- scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
- const u32 stride = getVertexPitchFromType(buf->getVertexType());
- u32 vertex_count = buf->getVertexCount();
- u8 *vertices = (u8 *)buf->getVertices();
- for (u32 i = 0; i < vertex_count; i++)
- ((video::S3DVertex *)(vertices + i * stride))->Color = color;
- }
+ for (u32 j = 0; j < mc; j++)
+ setMeshBufferColor(mesh->getMeshBuffer(j), color);
}
-void shadeMeshFaces(scene::IMesh *mesh)
+void colorizeMeshBuffer(scene::IMeshBuffer *buf, const video::SColor *buffercolor)
{
- if (mesh == NULL)
- return;
-
- u32 mc = mesh->getMeshBufferCount();
- for (u32 j = 0; j < mc; j++) {
- scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
- const u32 stride = getVertexPitchFromType(buf->getVertexType());
- u32 vertex_count = buf->getVertexCount();
- u8 *vertices = (u8 *)buf->getVertices();
- for (u32 i = 0; i < vertex_count; i++) {
- video::S3DVertex *vertex = (video::S3DVertex *)(vertices + i * stride);
- video::SColor &vc = vertex->Color;
- if (vertex->Normal.Y < -0.5) {
- applyFacesShading (vc, 0.447213);
- } else if (vertex->Normal.Z > 0.5) {
- applyFacesShading (vc, 0.670820);
- } else if (vertex->Normal.Z < -0.5) {
- applyFacesShading (vc, 0.670820);
- } else if (vertex->Normal.X > 0.5) {
- applyFacesShading (vc, 0.836660);
- } else if (vertex->Normal.X < -0.5) {
- applyFacesShading (vc, 0.836660);
- }
- }
+ const u32 stride = getVertexPitchFromType(buf->getVertexType());
+ u32 vertex_count = buf->getVertexCount();
+ u8 *vertices = (u8 *) buf->getVertices();
+ for (u32 i = 0; i < vertex_count; i++) {
+ video::S3DVertex *vertex = (video::S3DVertex *) (vertices + i * stride);
+ video::SColor *vc = &(vertex->Color);
+ // Reset color
+ *vc = *buffercolor;
+ // Apply shading
+ applyFacesShading(*vc, vertex->Normal);
}
}
@@ -379,48 +387,52 @@ void recalculateBoundingBox(scene::IMesh *src_mesh)
src_mesh->setBoundingBox(bbox);
}
-scene::IMesh* cloneMesh(scene::IMesh *src_mesh)
+scene::IMeshBuffer* cloneMeshBuffer(scene::IMeshBuffer *mesh_buffer)
+{
+ switch (mesh_buffer->getVertexType()) {
+ case video::EVT_STANDARD: {
+ video::S3DVertex *v = (video::S3DVertex *) mesh_buffer->getVertices();
+ u16 *indices = mesh_buffer->getIndices();
+ scene::SMeshBuffer *cloned_buffer = new scene::SMeshBuffer();
+ cloned_buffer->append(v, mesh_buffer->getVertexCount(), indices,
+ mesh_buffer->getIndexCount());
+ return cloned_buffer;
+ }
+ case video::EVT_2TCOORDS: {
+ video::S3DVertex2TCoords *v =
+ (video::S3DVertex2TCoords *) mesh_buffer->getVertices();
+ u16 *indices = mesh_buffer->getIndices();
+ scene::SMeshBufferTangents *cloned_buffer =
+ new scene::SMeshBufferTangents();
+ cloned_buffer->append(v, mesh_buffer->getVertexCount(), indices,
+ mesh_buffer->getIndexCount());
+ return cloned_buffer;
+ }
+ case video::EVT_TANGENTS: {
+ video::S3DVertexTangents *v =
+ (video::S3DVertexTangents *) mesh_buffer->getVertices();
+ u16 *indices = mesh_buffer->getIndices();
+ scene::SMeshBufferTangents *cloned_buffer =
+ new scene::SMeshBufferTangents();
+ cloned_buffer->append(v, mesh_buffer->getVertexCount(), indices,
+ mesh_buffer->getIndexCount());
+ return cloned_buffer;
+ }
+ }
+ // This should not happen.
+ sanity_check(false);
+ return NULL;
+}
+
+scene::SMesh* cloneMesh(scene::IMesh *src_mesh)
{
scene::SMesh* dst_mesh = new scene::SMesh();
for (u16 j = 0; j < src_mesh->getMeshBufferCount(); j++) {
- scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
- switch (buf->getVertexType()) {
- case video::EVT_STANDARD: {
- video::S3DVertex *v =
- (video::S3DVertex *) buf->getVertices();
- u16 *indices = (u16*)buf->getIndices();
- scene::SMeshBuffer *temp_buf = new scene::SMeshBuffer();
- temp_buf->append(v, buf->getVertexCount(),
- indices, buf->getIndexCount());
- dst_mesh->addMeshBuffer(temp_buf);
- temp_buf->drop();
- break;
- }
- case video::EVT_2TCOORDS: {
- video::S3DVertex2TCoords *v =
- (video::S3DVertex2TCoords *) buf->getVertices();
- u16 *indices = (u16*)buf->getIndices();
- scene::SMeshBufferTangents *temp_buf =
- new scene::SMeshBufferTangents();
- temp_buf->append(v, buf->getVertexCount(),
- indices, buf->getIndexCount());
- dst_mesh->addMeshBuffer(temp_buf);
- temp_buf->drop();
- break;
- }
- case video::EVT_TANGENTS: {
- video::S3DVertexTangents *v =
- (video::S3DVertexTangents *) buf->getVertices();
- u16 *indices = (u16*)buf->getIndices();
- scene::SMeshBufferTangents *temp_buf =
- new scene::SMeshBufferTangents();
- temp_buf->append(v, buf->getVertexCount(),
- indices, buf->getIndexCount());
- dst_mesh->addMeshBuffer(temp_buf);
- temp_buf->drop();
- break;
- }
- }
+ scene::IMeshBuffer *temp_buf = cloneMeshBuffer(
+ src_mesh->getMeshBuffer(j));
+ dst_mesh->addMeshBuffer(temp_buf);
+ temp_buf->drop();
+
}
return dst_mesh;
}
@@ -439,7 +451,7 @@ scene::IMesh* convertNodeboxesToMesh(const std::vector<aabb3f> &boxes,
buf->drop();
}
- video::SColor c(255,255,255,255);
+ video::SColor c(255,255,255,255);
for (std::vector<aabb3f>::const_iterator
i = boxes.begin();
@@ -526,7 +538,7 @@ scene::IMesh* convertNodeboxesToMesh(const std::vector<aabb3f> &boxes,
buf->append(vertices + j, 4, indices, 6);
}
}
- return dst_mesh;
+ return dst_mesh;
}
struct vcache
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 07:52:15 +0000