Add texture displacement info in terrain tab

src/editing/terrain/mainterrainform.cpp

@@ -7,6 +7,7 @@
 #include "previewterrainshape.h"
 #include "tools.h"
 #include "rendering/scenery.h"
+#include "rendering/textures/public.h"
 
 MainTerrainForm::MainTerrainForm(QWidget *parent) :
     QWidget(parent),
@@ -67,7 +68,19 @@ void MainTerrainForm::refreshFromLocalData()
 
 void MainTerrainForm::refreshFromFellowData()
 {
-    // TODO Refresh texture info
+    TexturesDefinition* textures = (TexturesDefinition*)TexturesDefinitionClass.create();
+    sceneryGetTextures(textures);
+    double disp = texturesGetMaximalDisplacement(textures);
+    TexturesDefinitionClass.destroy(textures);
+
+    if (disp == 0.0)
+    {
+        ui->label_info_textures->setText(tr("No displacement textures"));
+    }
+    else
+    {
+        ui->label_info_textures->setText(tr("Maximal displacement : %1% of total height").arg(100.0 * disp / _terrain->height, 0, 'f', 1));
+    }
 }
 
 void MainTerrainForm::updateLocalDataFromScenery()

src/editing/terrain/mainterrainform.ui

@@ -298,7 +298,7 @@
                </widget>
               </item>
               <item>
-               <widget class="QLabel" name="label_7">
+               <widget class="QLabel" name="label_info_textures">
                 <property name="text">
                  <string notr="true">{ textures info }</string>
                 </property>

src/editing/terrain/widgetheightmap.cpp

@@ -274,7 +274,6 @@ void WidgetHeightMap::timerEvent(QTimerEvent*)
 
 void WidgetHeightMap::initializeGL()
 {
-
     glClearColor(0.0, 0.0, 0.0, 0.0);
 
     GLfloat light_diffuse[] = {0.75, 0.74, 0.7, 1.0};
@@ -312,7 +311,6 @@ void WidgetHeightMap::initializeGL()
 
 void WidgetHeightMap::resizeGL(int w, int h)
 {
-
     glViewport(0, 0, w, h);
 
     glMatrixMode(GL_PROJECTION);

src/rendering/textures/public.h

@@ -96,6 +96,8 @@ LayerType texturesGetLayerType();
 void texturesAutoPreset(TexturesDefinition* definition, TexturesPreset preset);
 void texturesLayerAutoPreset(TexturesLayerDefinition* definition, TexturesLayerPreset preset);
 
+double texturesGetMaximalDisplacement(TexturesDefinition* textures);
+
 /*Renderer* cloudsCreatePreviewCoverageRenderer();
 Color cloudsGetPreviewCoverage(Renderer* renderer, double x, double y, double scaling, int perspective);
 

src/rendering/textures/tex_tools.c

@@ -32,3 +32,20 @@ double texturesGetTriplanarNoise(NoiseGenerator* noise, Vector3 location, Vector
 
     return noiseXY * mXY + noiseXZ * mXZ + noiseYZ * mYZ;
 }
+
+double texturesGetMaximalDisplacement(TexturesDefinition* textures)
+{
+    int i, n;
+    double disp = 0.0;
+    n = layersCount(textures->layers);
+    for (i = 0; i < n; i++)
+    {
+        TexturesLayerDefinition* layer = layersGetLayer(textures->layers, i);
+
+        if (layer->displacement_height > 0.0)
+        {
+            disp += layer->displacement_height;
+        }
+    }
+    return disp;
+}