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paysages: Apply canvas height limits to terrain

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git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@396 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
This commit is contained in:
Michaël Lemaire 2012-07-23 16:21:33 +00:00 committed by ThunderK
parent 4477d40e7a
commit 3ad79c9b7c
4 changed files with 30 additions and 3 deletions
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26
lib_paysages/terrain.c
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@ -72,11 +72,31 @@ void terrainCopyDefinition(TerrainDefinition* source, TerrainDefinition* destina
void terrainValidateDefinition(TerrainDefinition* definition)
{
int i, n;
TerrainCanvas* canvas;
double min, max;
noiseValidate(definition->height_noise);
layersValidate(definition->canvases);
/* Get minimal and maximal height */
definition->_min_height = -noiseGetMaxValue(definition->height_noise) * definition->height_factor;
definition->_max_height = noiseGetMaxValue(definition->height_noise) * definition->height_factor;
/* FIXME _max_height depends on canvases/modifiers */
n = layersCount(definition->canvases);
for (i = 0; i < n; i++)
{
canvas = layersGetLayer(definition->canvases, i);
terrainCanvasGetLimits(canvas, &min, &max);
if (min < definition->_min_height)
{
definition->_min_height = min;
}
if (max > definition->_max_height)
{
definition->_max_height = max;
}
}
}
static inline double _getHeight(TerrainDefinition* definition, double x, double z)
@ -309,13 +329,13 @@ double terrainGetHeight(TerrainDefinition* definition, double x, double z)
double terrainGetHeightNormalized(TerrainDefinition* definition, double x, double z)
{
if (definition->_max_height == 0.0)
if (definition->_max_height - definition->_min_height <= 0.0000001)
{
return 0.5;
}
else
{
return 0.5 + _getHeight(definition, x, z) / (definition->_max_height * 2.0);
return _getHeight(definition, x, z) - definition->_min_height / (definition->_max_height - definition->_min_height);
}
}

1
lib_paysages/terrain.h
View file

@ -22,6 +22,7 @@ typedef struct
Layers* canvases;
double shadow_smoothing;
double _min_height;
double _max_height;
} TerrainDefinition;

5
lib_paysages/terraincanvas.c
View file

@ -106,6 +106,11 @@ void terrainCanvasLoad(PackStream* stream, TerrainCanvas* canvas)
packReadDouble(stream, &canvas->mask.smoothing);
}
double terrainCanvasGetLimits(TerrainCanvas* canvas, double* ymin, double* ymax)
{
return heightmapGetLimits(canvas->height_map, ymin, ymax);
}
void terrainCanvasRevertToTerrain(TerrainCanvas* canvas, TerrainDefinition* terrain, int only_masked)
{
}

1
lib_paysages/terraincanvas.h
View file

@ -52,6 +52,7 @@ LayerType terrainCanvasGetLayerType();
void terrainCanvasSave(PackStream* stream, TerrainCanvas* canvas);
void terrainCanvasLoad(PackStream* stream, TerrainCanvas* canvas);
double terrainCanvasGetLimits(TerrainCanvas* canvas, double* ymin, double* ymax);
void terrainCanvasRevertToTerrain(TerrainCanvas* canvas, TerrainDefinition* terrain, int only_masked);
Vector3 terrainCanvasApply(TerrainCanvas* canvas, Vector3 location);