Change Orthographic Zoom via render script

britzl · October 14, 2024, 11:20am

The camera will send a view and projection matrix based on the camera configuration. You would have to do the calculation of the projection matrix in the render script instead. There is code in the default render script to create an orthographic projection with zoom:

github.com

defold/defold/blob/dev/engine/engine/content/builtins/render/default.render_script#L34-L41

    
      
          camera.zoom = camera.zoom or DEFAULT_ZOOM
          local projected_width = state.window_width / camera.zoom
          local projected_height = state.window_height / camera.zoom
          local left = -(projected_width - state.width) / 2
          local bottom = -(projected_height - state.height) / 2
          local right = left + projected_width
          local top = bottom + projected_height
          return vmath.matrix4_orthographic(left, right, bottom, top, camera.near, camera.far)