Show parameters for thumbnail as table.

rtiow/src/bin/noise_explorer.rs

@@ -84,6 +84,22 @@ impl NoiseType {
             ),
         }
     }
+
+    fn parameters(&self) -> Vec<(&str, String)> {
+        match &self {
+            NoiseType::Scale(scale) => vec![("Scale", scale.to_string())],
+            NoiseType::Turbulence(turbulence) => vec![("Turbulence", turbulence.to_string())],
+            NoiseType::Marble {
+                period,
+                power,
+                size,
+            } => vec![
+                ("Period", period.to_string()),
+                ("Power", power.to_string()),
+                ("Size", size.to_string()),
+            ],
+        }
+    }
 }
 
 #[derive(Debug, Deserialize)]
@@ -289,12 +305,17 @@ fn build_specimens(width: u32, height: u32) -> Vec<Specimen> {
         }
         specimens.push(specimen);
 
-        let mut specimen = Specimen {
-            title: "Varying Marble".into(),
-            params: Vec::new(),
-        };
-        for power in 1..10 {
-            for size in 1..6 {
+        let max_size = 8;
+        for power in 1..12 {
+            let mut specimen = Specimen {
+                title: format!(
+                    "Marble power {}, varying size 2-{}",
+                    power,
+                    1 << (max_size - 1)
+                ),
+                params: Vec::new(),
+            };
+            for size in 1..max_size {
                 let params = NoiseParams {
                     width,
                     height,
@@ -306,7 +327,13 @@ fn build_specimens(width: u32, height: u32) -> Vec<Specimen> {
                 };
                 specimen.params.push(params);
             }
+            specimens.push(specimen);
         }
+
+        let mut specimen = Specimen {
+            title: "Marble varying power, size = 32".into(),
+            params: Vec::new(),
+        };
         for power in 1..10 {
             let params = NoiseParams {
                 width,