migrated cave mode into cave and depth-tinting primitives

overviewer_core/src/primitives/depth-tinting.c

@@ -0,0 +1,70 @@
+/* 
+ * This file is part of the Minecraft Overviewer.
+ *
+ * Minecraft Overviewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Minecraft Overviewer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../overviewer.h"
+#include <math.h>
+
+typedef struct {
+    /* list of colors used for tinting */
+    PyObject *depth_colors;
+} RenderPrimitiveDepthTinting;
+
+static int
+depth_tinting_start(void *data, RenderState *state, PyObject *support) {
+    RenderPrimitiveDepthTinting* self;
+    self = (RenderPrimitiveDepthTinting *)data;
+
+    self->depth_colors = PyObject_GetAttrString(support, "depth_colors");
+    if (self->depth_colors == NULL)
+        return 1;
+
+    return 0;
+}
+
+static void
+depth_tinting_finish(void *data, RenderState *state) {
+    RenderPrimitiveDepthTinting* self;
+    self = (RenderPrimitiveDepthTinting *)data;
+
+    Py_DECREF(self->depth_colors);
+}
+
+static void
+depth_tinting_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
+    RenderPrimitiveDepthTinting* self;
+    int z, r, g, b;
+    self = (RenderPrimitiveDepthTinting *)data;
+
+    z = state->z;
+    r = 0, g = 0, b = 0;
+
+    /* get the colors and tint and tint */
+    r = PyInt_AsLong(PyList_GetItem(self->depth_colors, 0 + z*3));
+    g = PyInt_AsLong(PyList_GetItem(self->depth_colors, 1 + z*3));
+    b = PyInt_AsLong(PyList_GetItem(self->depth_colors, 2 + z*3));
+    
+    tint_with_mask(state->img, r, g, b, 255, mask, state->imgx, state->imgy, 0, 0);
+}
+
+RenderPrimitiveInterface primitive_depth_tinting = {
+    "depth-tinting", sizeof(RenderPrimitiveDepthTinting),
+    depth_tinting_start,
+    depth_tinting_finish,
+    NULL,
+    NULL,
+    depth_tinting_draw,
+};