LogalDeveloper/Minecraft-Overviewer
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depth-tinting, depth, and height-fading render primitives fixed for anvil

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This commit is contained in:
Aaron Griffith
2012-02-21 14:36:46 -05:00
parent 136ea70281
commit a8c298fe4e
4 changed files with 16 additions and 8 deletions
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6
overviewer_core/src/primitives/height-fading.c
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@@ -43,12 +43,16 @@ height_fading_finish(void *data, RenderState *state) {
static void
height_fading_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
PrimitiveHeightFading *self = (PrimitiveHeightFading *)data;
int y = 16 * state->chunky + state->y;
/* do some height fading */
PyObject *height_color = self->white_color;
/* current formula requires y to be between 0 and 127, so scale it */
y = (y * 128) / (16 * SECTIONS_PER_CHUNK);
/* negative alpha => darkness, positive => light */
float alpha = (1.0 / (1 + expf((70 - state->z) / 11.0))) * 0.6 - 0.55;
float alpha = (1.0 / (1 + expf((70 - y) / 11.0))) * 0.6 - 0.55;
if (alpha < 0.0) {
alpha *= -1;