QgsSimplifyMethod class

Public types

enum MethodType { NoSimplification, OptimizeForRendering, PreserveTopology }

Public static functions

static auto createGeometrySimplifier(const QgsSimplifyMethod& simplifyMethod) -> QgsAbstractGeometrySimplifier*

Creates a geometry simplifier according to specified method.

Constructors, destructors, conversion operators

QgsSimplifyMethod() defaulted

construct a default method

Public functions

auto forceLocalOptimization() const -> bool

Gets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries.

auto methodType() const -> MethodType

Gets the simplification type.

void setForceLocalOptimization(bool localOptimization)

Sets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries.

void setMethodType(MethodType methodType)

Sets the simplification type.

void setThreshold(float threshold)

Sets the simplification threshold in pixels. Represents the maximum distance in pixels between two coordinates which can be considered equal.

void setTolerance(double tolerance)

Sets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.

auto threshold() const -> float

Gets the simplification threshold in pixels. Represents the maximum distance in pixels between two coordinates which can be considered equal.

auto tolerance() const -> double

Gets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.

Protected variables

bool mForceLocalOptimization

Simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries.

MethodType mMethodType

Simplification method.

float mThreshold

Simplification threshold.

double mTolerance

Simplification tolerance, it represents the maximum distance between two coordinates which can be considered equal.

Enum documentation