vegetation: Added basic distribution algorithm
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3 changed files with 38 additions and 7 deletions
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@ -155,7 +155,7 @@ void VegetationModelDefinition::randomize()
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}
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// Add foliage items
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for (int i = 0; i < 150; i++)
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for (int i = 0; i < 50; i++)
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{
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double radius = 0.15;
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Vector3 dir = Vector3::randomInSphere(1.0 - radius);
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@ -3,19 +3,46 @@
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#include "Scenery.h"
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#include "TerrainDefinition.h"
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#include "VegetationLayerDefinition.h"
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#include "VegetationModelDefinition.h"
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#include "VegetationInstance.h"
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#include "FloatNode.h"
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#include "NoiseNode.h"
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#include "NoiseGenerator.h"
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VegetationPresenceDefinition::VegetationPresenceDefinition(VegetationLayerDefinition *parent):
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DefinitionNode(parent, "presence")
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{
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noise = new NoiseNode(this);
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noise->setLevels(4);
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interval = new FloatNode(this, "interval", 0.1);
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}
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bool VegetationPresenceDefinition::collectInstances(std::vector<VegetationInstance> *result, const VegetationModelDefinition &model, double xmin, double zmin, double xmax, double zmax, bool outcomers) const
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{
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// TEMP debug implementation
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double x = (xmin + xmax) / 2.0;
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double z = (zmax + zmin) / 2.0;
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double y = getScenery()->getTerrain()->getInterpolatedHeight(x, z, true, true);
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result->push_back(VegetationInstance(model, Vector3(x, y, z), 0.2));
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return true;
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bool added = 0;
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const NoiseGenerator *generator = noise->getGenerator();
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double interval_value = interval->getValue();
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double xstart = xmin - fmod(xmin, interval_value);
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double zstart = zmin - fmod(zmin, interval_value);
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for (double x = xstart; x < xmax; x += interval_value)
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{
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for (double z = zstart; z < zmax; z += interval_value)
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{
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double noise_presence = generator->get2DTotal(x * 0.1, z * 0.1);
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if (noise_presence > 0.0)
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{
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double size = 0.1 + 0.2 * fabs(generator->get2DTotal(z * 10.0, x * 10.0)) * (noise_presence * 0.5 + 0.5);
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double angle = 3.0 * generator->get2DTotal(-x * 20.0, z * 20.0); // TODO balanced distribution
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double xoffset = fabs(generator->get2DTotal(x * 12.0, -z * 12.0));
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double zoffset = fabs(generator->get2DTotal(-x * 27.0, -z * 27.0));
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double y = getScenery()->getTerrain()->getInterpolatedHeight(x + xoffset, z + zoffset, true, true);
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result->push_back(VegetationInstance(model, Vector3(x + xoffset, y, z + zoffset), size, angle));
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added++;
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}
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}
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}
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return added > 0;
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}
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@ -26,6 +26,10 @@ public:
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* It's the renderer role to apply the correct displacement.
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*/
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bool collectInstances(std::vector<VegetationInstance> *result, const VegetationModelDefinition &model, double xmin, double zmin, double xmax, double zmax, bool outcomers=true) const;
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private:
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NoiseNode *noise;
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FloatNode *interval;
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};
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}
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