tools: Improve seq_compiler usage with example command

Adds a copy-pasteable example line to the seq_compiler usage message when run without arguments.

2 files changed, 23 insertions, 0 deletions

diff --git a/src/generated/timeline.cc b/src/generated/timeline.cc
new file mode 100644
index 0000000..c7aad2f
--- /dev/null
+++ b/src/generated/timeline.cc
@@ -0,0 +1,22 @@
+// Auto-generated by seq_compiler. Do not edit.
+#include "gpu/demo_effects.h"
+#include "gpu/effect.h"
+
+void LoadTimeline(MainSequence& main_seq, WGPUDevice device, WGPUQueue queue, WGPUTextureFormat format) {
+  {
+    auto seq = std::make_shared<Sequence>();
+    seq->add_effect(std::make_shared<HeptagonEffect>(device, queue, format), 0.0f, 1000.0f, 0);
+    seq->add_effect(std::make_shared<MovingEllipseEffect>(device, queue, format), 0.0f, 1000.0f, 1);
+    seq->add_effect(std::make_shared<ParticlesEffect>(device, queue, format), 0.0f, 1000.0f, 2);
+    seq->add_effect(std::make_shared<ParticleSprayEffect>(device, queue, format), 0.0f, 1000.0f, 3);
+    main_seq.add_sequence(seq, 0.0f, 0);
+  }
+  {
+    auto seq = std::make_shared<Sequence>();
+    seq->add_effect(std::make_shared<SolarizeEffect>(device, queue, format), 5.0f, 10.0f, 0);
+    seq->add_effect(std::make_shared<GaussianBlurEffect>(device, queue, format), 10.0f, 15.0f, 0);
+    seq->add_effect(std::make_shared<DistortEffect>(device, queue, format), 15.0f, 20.0f, 0);
+    seq->add_effect(std::make_shared<ChromaAberrationEffect>(device, queue, format), 20.0f, 25.0f, 0);
+    main_seq.add_sequence(seq, 0.0f, 1);
+  }
+}
diff --git a/tools/seq_compiler.cc b/tools/seq_compiler.cc
index fabb43f..a04bb5d 100644
--- a/tools/seq_compiler.cc
+++ b/tools/seq_compiler.cc
@@ -33,6 +33,7 @@ std::string trim(const std::string &str) {
 int main(int argc, char *argv[]) {
   if (argc != 3) {
     std::cerr << "Usage: " << argv[0] << " <input.seq> <output.cc>\n";
+    std::cerr << "Example: " << argv[0] << " assets/demo.seq src/timeline.cc\n";
     return 1;
   }