cascade styles

src/style/properties.cpp

@@ -0,0 +1,25 @@
+#include <llmr/style/properties.hpp>
+
+
+#include <cassert>
+
+using namespace llmr;
+
+
+float functions::null(float z, const std::vector<float>&) {
+    return 0;
+}
+
+bool functions::null(float z, const std::vector<bool>&) {
+    return false;
+}
+
+float functions::constant(float z, const std::vector<float>& values) {
+    assert(values.size() == 1);
+    return values.front();
+}
+
+bool functions::constant(float z, const std::vector<bool>& values) {
+    assert(values.size() == 1);
+    return values.front();
+}