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-rw-r--r--dgedit/canvas.cc53
1 files changed, 48 insertions, 5 deletions
diff --git a/dgedit/canvas.cc b/dgedit/canvas.cc
index 36900a3..08005c7 100644
--- a/dgedit/canvas.cc
+++ b/dgedit/canvas.cc
@@ -79,11 +79,31 @@ Canvas::~Canvas()
if(data) delete[] data;
}
-
-#define VALL(x) (x*2)
-#define VALU(x) (x*2+1)
-#define POWL(x) (x*2+2)
-#define POWU(x) (x*2+3)
+#define VALL(x) (x*4)
+#define VALU(x) (x*4+1)
+#define POWL(x) (x*4+2)
+#define POWU(x) (x*4+3)
+/*
+static void genmipmap(float *in, size_t insz, float **out, size_t *outsz)
+{
+ *outsz = (insz / 2) * 4;
+ *out = new float[*outsz];
+ float *lookup = *out;
+
+ for(size_t i = 0; i < *outsz / 4; i++) {
+ lookup[VALL(i)] = 0.0;
+ lookup[VALU(i)] = 0.0;
+ lookup[POWL(i)] = 0.0;
+ lookup[POWU(i)] = 0.0;
+ for(size_t j = i * 2; j < i*2+2 && j < insz / 4; j++) {
+ if(in[VALU(j)] > lookup[VALU(i)]) lookup[VALU(i)] = in[VALU(j)];
+ if(in[VALL(j)] < lookup[VALL(i)]) lookup[VALL(i)] = in[VALL(j)];
+ if(in[POWU(j)] > 0) lookup[POWU(i)] += in[POWU(j)];
+ if(in[POWL(j)] < 0) lookup[POWL(i)] += in[POWL(j)];
+ }
+ }
+}
+*/
void Canvas::load(QString file)
{
if(data) {
@@ -132,7 +152,30 @@ void Canvas::load(QString file)
mipmaps[dev] = lookup;
}
+ /*
+
+ size_t sz = (size / 2) * 4;
+ mipmaps[2] = new float[sz];
+ float *lookup = mipmaps[2];
+ for(size_t i = 0; i < sz; i++) {
+ lookup[VALL(i)] = 0.0;
+ lookup[VALU(i)] = 0.0;
+ lookup[POWL(i)] = 0.0;
+ lookup[POWU(i)] = 0.0;
+ for(size_t j = i * 2; j < (i + 1) * 2; j++) {
+ if(data[j] > lookup[VALU(i)]) lookup[VALU(i)] = data[j];
+ if(data[j] < lookup[VALL(i)]) lookup[VALL(i)] = data[j];
+ if(data[j] > 0) lookup[POWU(i)] += data[j];
+ if(data[j] < 0) lookup[POWL(i)] += data[j];
+ }
+ }
+ size_t dev = 3;
+ do {
+ genmipmap(mipmaps[dev], sz, &mipmaps[dev], &sz);
+ dev++;
+ } while(sz > 2);
+ */
updateWav();
update();
}