From 78739a666a7031db16648c7d629f567442ea16bd Mon Sep 17 00:00:00 2001
From: rodri <rgl@antares-labs.eu>
Date: Thu, 26 Sep 2024 11:32:44 +0000
Subject: add an opacity parameter in OBJColor to discard non-colors.

---
 obj.c | 4 ++++
 obj.h | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/obj.c b/obj.c
index aa52515..95fa11f 100644
--- a/obj.c
+++ b/obj.c
@@ -425,6 +425,7 @@ objmtlparse(char *file)
 				m->Ka.g = strtod(f[2], nil);
 				m->Ka.b = strtod(f[3], nil);
 			}
+			m->Ka.a = 1;
 		}else if(strcmp(f[0], "Kd") == 0){
 			if(nf != 2 && nf != 4){
 				mterror("syntax error");
@@ -441,6 +442,7 @@ objmtlparse(char *file)
 				m->Kd.g = strtod(f[2], nil);
 				m->Kd.b = strtod(f[3], nil);
 			}
+			m->Kd.a = 1;
 		}else if(strcmp(f[0], "Ks") == 0){
 			if(nf != 2 && nf != 4){
 				mterror("syntax error");
@@ -457,6 +459,7 @@ objmtlparse(char *file)
 				m->Ks.g = strtod(f[2], nil);
 				m->Ks.b = strtod(f[3], nil);
 			}
+			m->Ks.a = 1;
 		}else if(strcmp(f[0], "Ke") == 0){
 			if(nf != 2 && nf != 4){
 				mterror("syntax error");
@@ -473,6 +476,7 @@ objmtlparse(char *file)
 				m->Ke.g = strtod(f[2], nil);
 				m->Ke.b = strtod(f[3], nil);
 			}
+			m->Ke.a = 1;
 		}else if(strcmp(f[0], "Ns") == 0){
 			if(nf != 2){
 				mterror("syntax error");
diff --git a/obj.h b/obj.h
index c819e8f..1a28613 100644
--- a/obj.h
+++ b/obj.h
@@ -48,7 +48,7 @@ union OBJVertex
 
 struct OBJColor
 {
-	double r, g, b;
+	double r, g, b, a;
 };
 
 struct OBJVertexArray
-- 
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