lucaspalomodevelop/meshlab
1
0
Fork 0
mirror of https://github.com/lucaspalomodevelop/meshlab.git synced 2026-03-13 08:09:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add rnd() and randInt(n) functions to muparse

Browse Source 
Add two functions to muParse to generate random numbers

* rnd() will generate a random double value in [0.0 .. 1.0) interval
* randInt(n) will generate a random integer value in [0 .. n) interval

Those functions may be used to generate noise custom noise algorithm that can be aplied to geometry, colors, normals, etc. or select a random number of vertex/faces than can be erased/processed in posterior filters.
This commit is contained in:
jmespadero 2023-07-28 13:42:38 +02:00 committed by GitHub
parent cb34356dad
commit 1bc6afaafd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 54 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
src/meshlabplugins/filter_func/filter_func.cpp
View File

@ -33,6 +33,20 @@
using namespace mu;
using namespace vcg;
std::random_device randomDev;
std::default_random_engine rndEngine(randomDev());
//Function to generate a random double number in [0..1) interval
double ML_Rnd() { return std::generate_canonical<double, 24>(rndEngine); }
//Function to generate a random integer number in [0..a) interval
double ML_RandInt(const double a) { return std::floor(a*MyRnd()); }
//Add rnd() and randint() custom functions to a mu::Parser
void setCustomFunctions(mu::Parser& p)
{
p.DefineFun("rnd", ML_Rnd);
p.DefineFun("randInt", ML_RandInt);
}
// Constructor
FilterFunctionPlugin::FilterFunctionPlugin()
{
@ -703,7 +717,9 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
// muparser initialization and explicitly define parser variables
Parser p;
setPerVertexVariables(p, m.cm);
setCustomFunctions(p);
// set expression inserted by user as string (required by muparser)
p.SetExpr(wexpr);
@ -749,7 +765,8 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
// muparser initialization and explicitly define parser variables
Parser p;
setPerFaceVariables(p, m.cm);
setCustomFunctions(p);
// set expression inserted by user as string (required by muparser)
p.SetExpr(conversion::fromStringToWString(select.toStdString()));
@ -817,12 +834,16 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
// muparser initialization and explicitly define parser variables
// function for x,y and z must use different parser and variables
Parser p1, p2, p3, p4;
setPerVertexVariables(p1, m.cm);
setPerVertexVariables(p2, m.cm);
setPerVertexVariables(p3, m.cm);
setPerVertexVariables(p4, m.cm);
setCustomFunctions(p1);
setCustomFunctions(p2);
setCustomFunctions(p3);
setCustomFunctions(p4);
p1.SetExpr(conversion::fromStringToWString(func_x));
p2.SetExpr(conversion::fromStringToWString(func_y));
p3.SetExpr(conversion::fromStringToWString(func_z));
@ -918,6 +939,9 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
Parser p;
setPerVertexVariables(p, m.cm);
//Add rnd() and randInt() internal functions
setCustomFunctions(p);
// set expression to calc with parser
p.SetExpr(conversion::fromStringToWString(func_q));
@ -977,6 +1001,8 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
Parser pu, pv;
setPerVertexVariables(pu, m.cm);
setPerVertexVariables(pv, m.cm);
setCustomFunctions(pu);
setCustomFunctions(pv);
// set expression to calc with parser
#ifdef _UNICODE
@ -1035,6 +1061,12 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
setPerFaceVariables(pv1, m.cm);
setPerFaceVariables(pu2, m.cm);
setPerFaceVariables(pv2, m.cm);
setCustomFunctions(pu0);
setCustomFunctions(pv0);
setCustomFunctions(pu1);
setCustomFunctions(pv1);
setCustomFunctions(pu2);
setCustomFunctions(pv2);
// set expression to calc with parser
pu0.SetExpr(conversion::fromStringToWString(func_u0));
@ -1084,6 +1116,10 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
setPerFaceVariables(p_nx, m.cm);
setPerFaceVariables(p_ny, m.cm);
setPerFaceVariables(p_nz, m.cm);
setCustomFunctions(p_nx);
setCustomFunctions(p_ny);
setCustomFunctions(p_nz);
p_nx.SetExpr(conversion::fromStringToWString(func_nx));
p_ny.SetExpr(conversion::fromStringToWString(func_ny));
p_nz.SetExpr(conversion::fromStringToWString(func_nz));
@ -1156,6 +1192,10 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
setPerFaceVariables(p2, m.cm);
setPerFaceVariables(p3, m.cm);
setPerFaceVariables(p4, m.cm);
setCustomFunctions(p1);
setCustomFunctions(p2);
setCustomFunctions(p3);
setCustomFunctions(p4);
p1.SetExpr(conversion::fromStringToWString(func_r));
p2.SetExpr(conversion::fromStringToWString(func_g));
@ -1229,6 +1269,7 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
// muparser initialization and define custom variables
Parser pf;
setPerFaceVariables(pf, m.cm);
setCustomFunctions(pf);
// set expression to calc with parser
pf.SetExpr(conversion::fromStringToWString(func_q));
@ -1288,6 +1329,7 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
Parser p;
setPerVertexVariables(p, m.cm);
setCustomFunctions(p);
p.SetExpr(conversion::fromStringToWString(expr));
@ -1340,6 +1382,7 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
h = tri::Allocator<CMeshO>::AddPerFaceAttribute<Scalarm>(m.cm, name);
Parser p;
setPerFaceVariables(p, m.cm);
setCustomFunctions(p);
p.SetExpr(conversion::fromStringToWString(expr));
time_t start = clock();
@ -1386,6 +1429,10 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
setPerVertexVariables(p_x, m.cm);
setPerVertexVariables(p_y, m.cm);
setPerVertexVariables(p_z, m.cm);
setCustomFunctions(p_x);
setCustomFunctions(p_y);
setCustomFunctions(p_z);
p_x.SetExpr(conversion::fromStringToWString(x_expr));
p_y.SetExpr(conversion::fromStringToWString(y_expr));
p_z.SetExpr(conversion::fromStringToWString(z_expr));
@ -1445,6 +1492,9 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
setPerFaceVariables(p_x, m.cm);
setPerFaceVariables(p_y, m.cm);
setPerFaceVariables(p_z, m.cm);
setCustomFunctions(p_x);
setCustomFunctions(p_y);
setCustomFunctions(p_z);
p_x.SetExpr(conversion::fromStringToWString(x_expr));
p_y.SetExpr(conversion::fromStringToWString(y_expr));
p_z.SetExpr(conversion::fromStringToWString(z_expr));
@ -1526,6 +1576,8 @@ std::map<std::string, QVariant> FilterFunctionPlugin::applyFilter(
Parser p;
double x, y, z;
setCustomFunctions(p);
p.DefineVar(conversion::fromStringToWString("x"), &x);
p.DefineVar(conversion::fromStringToWString("y"), &y);
p.DefineVar(conversion::fromStringToWString("z"), &z);