/// <summary>
/// Render and show a preview of a building.
/// </summary>
/// <param name="building">The building to render</param>
public void RenderPreview()
{
bool validRender = false;
if (renderPrefab is PropInfo prop)
{
if (prop.m_isDecal)
{
// Special case for decals - just use main texture directly.
previewSprite.texture = prop.m_material.mainTexture?.MakeReadable();
// Change width of previw sprite for non-square decals and ensure preview is centred in window; use double multiplied by 100 to avoid bizarre rounding errors.
double widthRatio = 100d, heightRatio = 100d;
if (prop.m_material.mainTexture.width > prop.m_material.mainTexture.height)
{
// Wider than high.
heightRatio = ((prop.m_material.mainTexture.height * 100d) / prop.m_material.mainTexture.width);
}
if (prop.m_material.mainTexture.width < prop.m_material.mainTexture.height)
{
// Higher than wide.
widthRatio = ((prop.m_material.mainTexture.width * 100d) / prop.m_material.mainTexture.height);
}
// Set preview sprite size and centre in renderPanel.
previewSprite.width = (float)((renderPanel.width * widthRatio) / 100d);
previewSprite.height = (float)((renderPanel.height * heightRatio) / 100d);
previewSprite.relativePosition = new Vector2((renderPanel.width - previewSprite.width) / 2f, (renderPanel.height - previewSprite.height) / 2f);
// Treat this as a valid render.
validRender = true;
}
else
{
// Not a decal - don't render anything without a mesh or material.
if (prop?.m_mesh != null && prop.m_material != null && !prop.m_mesh.name.Equals("none"))
{
// Set mesh and material for render.
renderer.Mesh = prop.m_mesh;
renderer.Material = prop.m_material;
if (prop.m_material?.mainTexture == null)
{
if (prop.m_variations != null && prop.m_variations.Length > 0 && prop.m_variations[0].m_prop != null)
{
renderer.Mesh = prop.m_variations[0].m_prop.m_mesh;
renderer.Material = prop.m_variations[0].m_prop.m_material;
}
}
// If the selected prop has colour variations, temporarily set the colour to the default for rendering.
if (prop.m_useColorVariations)
{
Color originalColor = prop.m_material.color;
prop.m_material.color = prop.m_color0;
renderer.Render();
prop.m_material.color = originalColor;
}
else
{
// No temporary colour change needed.
renderer.Render();
}
// We got a valid render; ensure preview sprite is square (decal previews can change width), set display texture, and set status flag.
previewSprite.relativePosition = Vector3.zero;
previewSprite.size = renderPanel.size;
previewSprite.texture = renderer.Texture;
validRender = true;
}
// If not a valid render, try to show thumbnail instead.
else if (prop.m_Atlas != null && !string.IsNullOrEmpty(prop.m_Thumbnail))
{
// Show thumbnail.
ShowThumbnail(prop.m_Atlas, prop.m_Thumbnail);
// All done here.
return;
}
}
}
else if (renderPrefab is TreeInfo tree)
{
// Don't render anything without a mesh or material.
if (tree?.m_mesh != null && tree.m_material != null)
{
// Set mesh and material for render.
renderer.Mesh = tree.m_mesh;
renderer.Material = tree.m_material;
// Render.
renderer.Render();
// We got a valid render; ensure preview sprite is square (decal previews can change width), set display texture, and set status flag.
previewSprite.relativePosition = Vector3.zero;
previewSprite.size = renderPanel.size;
previewSprite.texture = renderer.Texture;
validRender = true;
}
// If not a valid render, try to show thumbnail instead.
else if (tree.m_Atlas != null && !string.IsNullOrEmpty(tree.m_Thumbnail))
{
// Show thumbnail.
ShowThumbnail(tree.m_Atlas, tree.m_Thumbnail);
// All done here.
return;
}
}
// Reset background if we didn't get a valid render.
if (!validRender)
{
previewSprite.Hide();
thumbnailSprite.Hide();
noPreviewSprite.Show();
return;
}
// If we got here, we should have a render; show it.
noPreviewSprite.Hide();
thumbnailSprite.Hide();
previewSprite.Show();
}
