Initial creation of j3d-core-utils sources in CVS repository

git-svn-id: https://svn.java.net/svn/j3d-core~svn/trunk@7 ba19aa83-45c5-6ac9-afd3-db810772062c

1 files changed, 168 insertions, 0 deletions

diff --git a/src/native/ogl/Lights.c b/src/native/ogl/Lights.c
new file mode 100644
index 0000000..89ab98e
--- /dev/null
+++ b/src/native/ogl/Lights.c
@@ -0,0 +1,168 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Use is subject to license terms.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <jni.h>
+
+#include "gldefs.h"
+
+#ifdef DEBUG
+/* Uncomment the following for VERBOSE debug messages */
+/* #define VERBOSE */
+#endif /* DEBUG */
+
+
+const float black[4] = { 0.0f, 0.0f, 0.0f, 1.0f };
+
+JNIEXPORT
+void JNICALL Java_javax_media_j3d_DirectionalLightRetained_updateLight(
+    JNIEnv *env, 
+    jobject light,
+    jlong ctxInfo,
+    jint lightSlot,
+    jfloat red,
+    jfloat green,
+    jfloat blue,
+    jfloat dirx,
+    jfloat diry,
+    jfloat dirz)
+{
+    int lightNum;
+    float values[4];
+    GraphicsContextPropertiesInfo *ctxProperties = (GraphicsContextPropertiesInfo *)ctxInfo;
+    jlong ctx = ctxProperties->context;
+
+#ifdef VERBOSE
+    fprintf(stderr, 
+            "Directional Light %d: %f %f %f direction, %f %f %f color\n", 
+	    lightSlot, dirx, diry, dirz, red, green, blue);
+#endif
+    lightNum = GL_LIGHT0 + lightSlot;
+    values[0] = red;
+    values[1] = green;
+    values[2] = blue;
+    values[3] = 1.0f;
+    glLightfv(lightNum, GL_DIFFUSE, values);
+    glLightfv(lightNum, GL_SPECULAR, values);
+    values[0] = -dirx;
+    values[1] = -diry;
+    values[2] = -dirz;
+    values[3] = 0.0f;
+    glLightfv(lightNum, GL_POSITION, values);
+    glLightfv(lightNum, GL_AMBIENT, black);
+    glLightf(lightNum, GL_CONSTANT_ATTENUATION, 1.0f);
+    glLightf(lightNum, GL_LINEAR_ATTENUATION, 0.0f);
+    glLightf(lightNum, GL_QUADRATIC_ATTENUATION, 0.0f);
+    glLightf(lightNum, GL_SPOT_EXPONENT, 0.0f);
+    glLightf(lightNum, GL_SPOT_CUTOFF, 180.0f);
+}
+
+JNIEXPORT
+void JNICALL Java_javax_media_j3d_PointLightRetained_updateLight(
+    JNIEnv *env, 
+    jobject light,
+    jlong ctxInfo,    
+    jint lightSlot,
+    jfloat red,
+    jfloat green,
+    jfloat blue,
+    jfloat attenx,
+    jfloat atteny,
+    jfloat attenz,
+    jfloat posx,
+    jfloat posy,
+    jfloat posz)
+{
+    int lightNum;
+    float values[4];
+
+#ifdef VERBOSE
+    fprintf(stderr, "Positional Light %d: %f %f %f position, %f %f %f color\n\t %f %f %f attenuation\n", 
+	    lightSlot, posx, posy, posz, red, green, blue, 
+	    attenx, atteny, attenz);
+#endif
+   
+    lightNum = GL_LIGHT0 + lightSlot;
+    values[0] = red;
+    values[1] = green;
+    values[2] = blue;
+    values[3] = 1.0f;
+    glLightfv(lightNum, GL_DIFFUSE, values);
+    glLightfv(lightNum, GL_SPECULAR, values);
+    glLightfv(lightNum, GL_AMBIENT, black);
+    values[0] = posx;
+    values[1] = posy;
+    values[2] = posz;
+    glLightfv(lightNum, GL_POSITION, values);
+    glLightf(lightNum, GL_CONSTANT_ATTENUATION, attenx);
+    glLightf(lightNum, GL_LINEAR_ATTENUATION, atteny);
+    glLightf(lightNum, GL_QUADRATIC_ATTENUATION, attenz);
+    glLightf(lightNum, GL_SPOT_EXPONENT, 0.0f);
+    glLightf(lightNum, GL_SPOT_CUTOFF, 180.0f);
+}
+
+JNIEXPORT
+void JNICALL Java_javax_media_j3d_SpotLightRetained_updateLight(
+    JNIEnv *env, 
+    jobject light,
+    jlong ctxInfo,    
+    jint lightSlot,
+    jfloat red,
+    jfloat green,
+    jfloat blue,
+    jfloat attenx,
+    jfloat atteny,
+    jfloat attenz,
+    jfloat posx,
+    jfloat posy,
+    jfloat posz,
+    jfloat spreadAngle,
+    jfloat concentration,
+    jfloat dirx,
+    jfloat diry,
+    jfloat dirz)
+{
+    int lightNum;
+    float values[4];
+
+#ifdef VERBOSE
+    fprintf(stderr, "Spot Light %d: %f %f %f position, %f %f %f color\n\t %f %f %f attenuation\n\t %f %f %f direction, %f spreadAngle, %f concentration\n",
+            lightSlot, posx, posy, posz, red, green, blue, 
+	    attenx, atteny, attenz, dirx, diry, dirz, 
+	    spreadAngle*180.0 / M_PI, concentration);
+#endif
+    lightNum = GL_LIGHT0 + lightSlot;
+    values[0] = red;
+    values[1] = green;
+    values[2] = blue;
+    values[3] = 1.0f;
+    glLightfv(lightNum, GL_DIFFUSE, values);
+    glLightfv(lightNum, GL_SPECULAR, values);
+    glLightfv(lightNum, GL_AMBIENT, black);
+    values[0] = posx;
+    values[1] = posy;
+    values[2] = posz;
+    glLightfv(lightNum, GL_POSITION, values);
+    glLightf(lightNum, GL_CONSTANT_ATTENUATION, attenx);
+    glLightf(lightNum, GL_LINEAR_ATTENUATION, atteny);
+    glLightf(lightNum, GL_QUADRATIC_ATTENUATION, attenz);
+    values[0] = dirx;
+    values[1] = diry;
+    values[2] = dirz;
+    glLightfv(lightNum, GL_SPOT_DIRECTION, values);
+    glLightf(lightNum, GL_SPOT_EXPONENT, concentration);
+    glLightf(lightNum, GL_SPOT_CUTOFF, (float) (spreadAngle * 180.0f / M_PI));
+}
+