From 53fee65d08081b7259e143b01c0edbbc89572e75 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Mon, 14 Apr 2003 17:11:56 +0000
Subject: [PATCH] better asserts

---
 panda/src/pnmimage/pnmImage.I   | 1 +
 panda/src/pnmimage/pnmImage.cxx | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/panda/src/pnmimage/pnmImage.I b/panda/src/pnmimage/pnmImage.I
index f8bdfc528d..7aced53f27 100644
--- a/panda/src/pnmimage/pnmImage.I
+++ b/panda/src/pnmimage/pnmImage.I
@@ -192,6 +192,7 @@ is_valid() const {
 ////////////////////////////////////////////////////////////////////
 INLINE void PNMImage::
 set_num_channels(int num_channels) {
+  nassertv(num_channels >= 1 && num_channels <= 4);
   set_color_type((ColorType)num_channels);
 }
 
diff --git a/panda/src/pnmimage/pnmImage.cxx b/panda/src/pnmimage/pnmImage.cxx
index 4aa57b8eff..8eafe3a7ca 100644
--- a/panda/src/pnmimage/pnmImage.cxx
+++ b/panda/src/pnmimage/pnmImage.cxx
@@ -54,6 +54,7 @@ void PNMImage::
 clear(int x_size, int y_size, int num_channels,
       xelval maxval, PNMFileType *type) {
   clear();
+  nassertv(num_channels >= 1 && num_channels <= 4);
 
   _x_size = x_size;
   _y_size = y_size;
@@ -273,6 +274,7 @@ write(PNMWriter *writer) const {
 ////////////////////////////////////////////////////////////////////
 void PNMImage::
 set_color_type(PNMImage::ColorType color_type) {
+  nassertv((int)color_type >= 1 && (int)color_type <= 4);
   if (color_type == get_color_type()) {
     return;
   }