paysages : Added cloud color preview.
git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@262 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
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3 changed files with 137 additions and 22 deletions
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@ -51,6 +51,89 @@ private:
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CloudsLayerDefinition _preview_layer;
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};
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class PreviewCloudsColor:public Preview
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{
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public:
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PreviewCloudsColor(QWidget* parent):Preview(parent)
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{
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LightDefinition light;
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_preview_layer = cloudsLayerCreateDefinition();
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_lighting = lightingCreateDefinition();
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light.color = COLOR_WHITE;
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light.amplitude = 0.0;
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light.direction.x = 0.0;
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light.direction.y = -0.4794;
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light.direction.z = 0.8776;
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light.filtered = 0;
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light.masked = 1;
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light.reflection = 1.0;
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lightingAddLight(&_lighting, light);
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lightingValidateDefinition(&_lighting);
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_renderer = rendererCreate();
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_renderer.render_quality = 3;
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_renderer.applyLightingToSurface = _applyLightingToSurface;
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_renderer.maskLight = _maskLight;
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_renderer.customData[0] = &_preview_layer;
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_renderer.customData[1] = &_lighting;
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}
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protected:
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QColor getColor(double x, double y)
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{
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Vector3 start, end;
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Color color_layer, result;
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start.x = x;
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start.y = y;
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start.z = -100.0;
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end.x = x;
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end.y = y;
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end.z = 100.0;
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result = COLOR_BLUE;
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color_layer = cloudsGetLayerColor(&_preview_layer, &_renderer, start, end);
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colorMask(&result, &color_layer);
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return colorToQColor(result);
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}
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void updateData()
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{
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cloudsLayerCopyDefinition(&_layer, &_preview_layer);
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_preview_layer.ymin = -100.0;
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_preview_layer.ycenter = 0.0;
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_preview_layer.ymax = 100.0;
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_preview_layer.customcoverage = _coverageFunc;
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}
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private:
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Renderer _renderer;
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CloudsLayerDefinition _preview_layer;
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LightingDefinition _lighting;
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static double _coverageFunc(CloudsLayerDefinition* layer, Vector3 position)
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{
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double dist = v3Norm(position);
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if (dist >= 100.0)
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{
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return 0.0;
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}
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else
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{
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return 1.0 - dist / 100.0;
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}
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}
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static Color _applyLightingToSurface(Renderer* renderer, Vector3 location, Vector3 normal, SurfaceMaterial material)
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{
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return lightingApplyToSurface((LightingDefinition*)renderer->customData[1], renderer, location, normal, material);
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}
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static Color _maskLight(Renderer* renderer, Color light_color, Vector3 at_location, Vector3 light_location, Vector3 direction_to_light)
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{
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return cloudsLayerFilterLight((CloudsLayerDefinition*)renderer->customData[0], renderer, light_color, at_location, light_location, direction_to_light);
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}
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};
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/**************** Form ****************/
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FormClouds::FormClouds(QWidget *parent):
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BaseForm(parent, false, true)
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@ -59,6 +142,7 @@ FormClouds::FormClouds(QWidget *parent):
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_layer = cloudsLayerCreateDefinition();
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addPreview(new PreviewCloudsCoverage(parent), "Layer coverage (no lighting)");
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addPreview(new PreviewCloudsColor(parent), "Color and lighting");
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addInputDouble("Start altitude", &_layer.ymin, -10.0, 250.0, 0.5, 5.0);
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addInputDouble("Max density altitude", &_layer.ycenter, -10.0, 250.0, 0.5, 5.0);
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@ -117,6 +117,29 @@ void cloudsValidateDefinition(CloudsDefinition* definition)
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}
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}
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static double _standardCoverageFunc(CloudsLayerDefinition* layer, Vector3 position)
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{
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double inside;
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if (position.y > layer->ycenter)
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{
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inside = 1.0 - (position.y - layer->ycenter) / (layer->ymax - layer->ycenter);
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}
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else
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{
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inside = 1.0 - (layer->ycenter - position.y) / (layer->ycenter - layer->ymin);
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}
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if (inside <= 0.0)
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{
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return 0.0;
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}
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else
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{
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return layer->coverage * inside;
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}
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}
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CloudsLayerDefinition cloudsLayerCreateDefinition()
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{
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CloudsLayerDefinition result;
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@ -133,6 +156,8 @@ CloudsLayerDefinition cloudsLayerCreateDefinition()
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result.ymin = 50.0;
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result.ycenter = 100.0;
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result.ymax = 200.0;
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result.customcoverage = _standardCoverageFunc;
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return result;
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}
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@ -188,8 +213,7 @@ int cloudsAddLayer(CloudsDefinition* definition)
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if (definition->nblayers < CLOUDS_MAX_LAYERS)
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{
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layer = definition->layers + definition->nblayers;
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layer->noise = noiseCreateGenerator();
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layer->coverage = 0.0;
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*layer = cloudsLayerCreateDefinition();
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return definition->nblayers++;
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}
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@ -214,45 +238,47 @@ void cloudsDeleteLayer(CloudsDefinition* definition, int layer)
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static inline double _getDistanceToBorder(CloudsLayerDefinition* layer, Vector3 position)
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{
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double val, min;
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if (position.y > layer->ycenter)
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{
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min = (position.y - layer->ycenter) / (layer->ymax - layer->ycenter);
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}
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else
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{
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min = (layer->ycenter - position.y) / (layer->ycenter - layer->ymin);
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}
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double val;
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val = 0.5 * noiseGet3DTotal(layer->noise, position.x / layer->scaling, position.y / layer->scaling, position.z / layer->scaling) / noiseGetMaxValue(layer->noise);
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return (val - 0.5 - min + layer->coverage) * layer->scaling;
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return (val - 0.5 + layer->customcoverage(layer, position)) * layer->scaling;
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}
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static inline Vector3 _getNormal(CloudsLayerDefinition* layer, Vector3 position, double detail)
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{
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Vector3 result = {0.0, 0.0, 0.0};
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Vector3 dposition;
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double val, dval;
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val = noiseGet3DDetail(layer->noise, position.x / layer->scaling, position.y / layer->scaling, position.z / layer->scaling, detail);
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val = _getDistanceToBorder(layer, position);
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dval = val - noiseGet3DDetail(layer->noise, (position.x + detail) / layer->scaling, position.y / layer->scaling, position.z / layer->scaling, detail);
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dposition.x = position.x + detail;
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dposition.y = position.y;
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dposition.z = position.z;
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dval = val - _getDistanceToBorder(layer, dposition);
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result.x += dval;
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dval = val - noiseGet3DDetail(layer->noise, (position.x - detail) / layer->scaling, position.y / layer->scaling, position.z / layer->scaling, detail);
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dposition.x = position.x - detail;
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dval = val - _getDistanceToBorder(layer, dposition);
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result.x -= dval;
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dval = val - noiseGet3DDetail(layer->noise, position.x / layer->scaling, (position.y + detail) / layer->scaling, position.z / layer->scaling, detail);
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dposition.x = position.x;
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dposition.y = position.y + detail;
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dval = val - _getDistanceToBorder(layer, dposition);
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result.y += dval;
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dval = val - noiseGet3DDetail(layer->noise, position.x / layer->scaling, (position.y - detail) / layer->scaling, position.z / layer->scaling, detail);
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dposition.y = position.y - detail;
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dval = val - _getDistanceToBorder(layer, dposition);
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result.y -= dval;
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dval = val - noiseGet3DDetail(layer->noise, position.x / layer->scaling, position.y / layer->scaling, (position.z + detail) / layer->scaling, detail);
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dposition.y = position.y;
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dposition.z = position.z + detail;
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dval = val - _getDistanceToBorder(layer, dposition);
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result.z += dval;
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dval = val - noiseGet3DDetail(layer->noise, position.x / layer->scaling, position.y / layer->scaling, (position.z - detail) / layer->scaling, detail);
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dposition.z = position.z - detail;
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dval = val - _getDistanceToBorder(layer, dposition);
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result.z -= dval;
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return v3Normalize(result);
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@ -12,7 +12,11 @@ extern "C" {
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#define CLOUDS_MAX_LAYERS 6
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typedef struct
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typedef struct CloudsLayerDefinition CloudsLayerDefinition;
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typedef double (*CloudCoverageFunc)(CloudsLayerDefinition* definition, Vector3 position);
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struct CloudsLayerDefinition
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{
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double ycenter;
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double ymin;
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@ -24,7 +28,8 @@ typedef struct
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double minimumlight;
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double scaling;
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double coverage;
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} CloudsLayerDefinition;
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CloudCoverageFunc customcoverage;
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};
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typedef struct
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{
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