Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 35 insertions, 0 deletions

diff --git a/vendor/exr/examples/3b_read_all_channels_with_metadata.rs b/vendor/exr/examples/3b_read_all_channels_with_metadata.rs
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+++ b/vendor/exr/examples/3b_read_all_channels_with_metadata.rs
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+
+// exr imports
+extern crate exr;
+
+/// Read an image and print information about the image into the console.
+/// This example shows how to read an image with multiple layers and arbitrary channels.
+/// For example, a layer with XYZ channels, and additionally a separate Depth layer.
+/// This example does not include resolution levels (mipmaps or ripmaps).
+fn main() {
+    use exr::prelude::*;
+
+    let image = read().no_deep_data()
+        .largest_resolution_level().all_channels().all_layers().all_attributes()
+        .on_progress(|progress| println!("progress: {:.1}", progress*100.0))
+        .from_file("generated_rgba_with_meta.exr")
+        .expect("run example `1_write_rgba_with_metadata` to generate this image file");
+
+    println!("image was read: {:#?}", image);
+
+    // output the average value for each channel of each layer
+    for layer in &image.layer_data {
+        for channel in &layer.channel_data.list {
+
+            let sample_vec = &channel.sample_data;
+            let average = sample_vec.values_as_f32().sum::<f32>() / sample_vec.len() as f32;
+
+            if let Some(layer_name) = &layer.attributes.layer_name {
+                println!("Channel `{}` of Layer `{}` has an average value of {}", channel.name, layer_name, average);
+            }
+            else {
+                println!("Channel `{}` has an average value of {}", channel.name, average);
+            }
+        }
+    }
+}
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