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gltransformation: normalize translations

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=744763

* Lubosz: use maxfloat for transformation range
This commit is contained in:
Xavier Claessens 2015-02-18 21:21:01 -05:00 committed by Tim-Philipp Müller
parent 1250285b30
commit 7fac5085e6
1 changed files with 7 additions and 6 deletions
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13
ext/gl/gstgltransformation.c
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@ -167,19 +167,19 @@ gst_gl_transformation_class_init (GstGLTransformationClass * klass)
/* Translation */
g_object_class_install_property (gobject_class, PROP_TRANSLATION_X,
g_param_spec_float ("translation-x", "X Translation",
"Translates the video at the X-Axis.",
"Translates the video at the X-Axis, in universal [0-1] coordinate.",
-G_MAXFLOAT, G_MAXFLOAT, 0.0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TRANSLATION_Y,
g_param_spec_float ("translation-y", "Y Translation",
"Translates the video at the Y-Axis.",
"Translates the video at the Y-Axis, in universal [0-1] coordinate.",
-G_MAXFLOAT, G_MAXFLOAT, 0.0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TRANSLATION_Z,
g_param_spec_float ("translation-z", "Z Translation",
"Translates the video at the Z-Axis.",
"Translates the video at the Z-Axis, in universal [0-1] coordinate.",
-G_MAXFLOAT, G_MAXFLOAT, 0.0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
@ -230,9 +230,10 @@ static void
gst_gl_transformation_build_mvp (GstGLTransformation * transformation)
{
graphene_point3d_t translation_vector =
GRAPHENE_POINT3D_INIT (transformation->xtranslation,
transformation->ytranslation,
transformation->ztranslation);
GRAPHENE_POINT3D_INIT (transformation->xtranslation * 2.0 *
transformation->aspect,
transformation->ytranslation * 2.0,
transformation->ztranslation * 2.0);
graphene_matrix_t model_matrix;
graphene_matrix_t projection_matrix;