animated_mesh.py works!

Author: catilac

crates/processing_pyo3/examples/animated_mesh.py

@@ -1,9 +1,11 @@
 from processing import *
+from math import sin, cos
 
 mesh = None
 grid_size = 20 
 spacing = 10.0
 offset = (grid_size * spacing) / 2.0;
+time = 0.0
 
 def setup():
     global mesh
@@ -39,13 +41,23 @@ def draw():
     global grid_size
     global offset
     global spacing
+    global time
 
     camera_position(150.0, 150.0, 150.0)
     camera_look_at( 0.0, 0.0, 0.0)
     background(220, 200, 140)
 
+    for z in range(grid_size):
+        for x in range(grid_size):
+            idx = int(z * grid_size + x)
+            px = x * spacing - offset
+            pz = z * spacing - offset
+            wave = sin(px * 0.1 + time) * cos(pz * 0.1 + time) * 20.0
+            mesh.set_vertex(idx, px, wave, pz)
+
     draw_mesh(mesh)
 
+    time += 0.05
 
 
 # TODO: this should happen implicitly on module load somehow

crates/processing_pyo3/src/graphics.rs

@@ -65,6 +65,11 @@ impl Mesh {
     pub fn index(&self, i: u32) -> PyResult<()> {
         geometry_index(self.entity, i).map_err(|e| PyRuntimeError::new_err(format!("{e}")))
     }
+
+    pub fn set_vertex(&self, i: u32, x: f32, y: f32, z: f32) -> PyResult<()> {
+        geometry_set_vertex(self.entity, i, x, y, z)
+            .map_err(|e| PyRuntimeError::new_err(format!("{e}")))
+    }
 }
 
 #[pyclass(unsendable)]