26 lines
908 B
C++
26 lines
908 B
C++
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#include <symbols/minecraft.h>
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#include <libreborn/libreborn.h>
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#include "shading-internal.h"
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// PolygonQuad
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Vec3 vector_to(const Vec3 &a, const Vec3 &b) {
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return Vec3(a.x - b.x, a.y - b.y, a.z - b.z);
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}
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Vec3 vector_cross(const Vec3 &a, const Vec3 &b) {
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return Vec3(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x);
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}
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static void PolygonQuad_render_injection(PolygonQuad_render_t original, PolygonQuad *self, Tesselator &t, float scale, int buffer) {
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// Set Normal
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const Vec3 v0 = vector_to(self->vertices[1].pos, self->vertices[0].pos);
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const Vec3 v1 = vector_to(self->vertices[1].pos, self->vertices[2].pos);
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const Vec3 n = vector_cross(v1, v0).normalized();
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t.normal(n.x, n.y, n.z);
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// Call Original Method
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original(self, t, scale, buffer);
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}
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// Init
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void _init_normals() {
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overwrite_calls(PolygonQuad_render, PolygonQuad_render_injection);
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}
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