started switching to autotools

1 files changed, 0 insertions, 153 deletions

diff --git a/pixfb.cpp b/pixfb.cpp
deleted file mode 100644
index f84bf2f..0000000
--- a/pixfb.cpp
+++ /dev/null
@@ -1,153 +0,0 @@
-#include "pixfb.h"
-#include <array>
-#include <cmath>
-#include <vector>
-#include <cstdint>
-#include "math_vector.h"
-#include "vertex.h"
-#include "tri_vertex.h"
-#include "vertex_data.h"
-
-PixelFrameBuffer::PixelFrameBuffer(unsigned int w, unsigned int h) {
-    resize(w, h);
-}
-
-void PixelFrameBuffer::resize(unsigned int w, unsigned int h) {
-    this->w = w;
-    this->h = h;
-    pixels_vector.resize(w * h);
-    depth_buf.resize(w * h);
-    clear();
-}
-
-unsigned int PixelFrameBuffer::width() const {
-    return w;
-}
-
-unsigned int PixelFrameBuffer::height() const {
-    return h;
-}
-
-const uint32_t* PixelFrameBuffer::pixels() const {
-    return pixels_vector.data();
-}
-
-void PixelFrameBuffer::clear() {
-    std::fill(pixels_vector.begin(), pixels_vector.end(), 0x000000FF);
-    std::fill(depth_buf.begin(), depth_buf.end(), 1.f);
-    face_ind = -1;
-}
-
-void PixelFrameBuffer::_draw_cropped_triangle(TriangleVertex3 triangle) {
-    std::array<Vertex3*, 3> sorted_vs = { &triangle.vertex1, &triangle.vertex2, &triangle.vertex3 };
-
-#define SWAP_IF_LT(X,Y) ({\
-            if (sorted_vs[X]->point.y < sorted_vs[Y]->point.y) {\
-                Vertex3* temp = sorted_vs[X];\
-                sorted_vs[X] = sorted_vs[Y];\
-                sorted_vs[Y] = temp;\
-            }\
-        })
-    SWAP_IF_LT(1, 0);
-    SWAP_IF_LT(2, 1);
-    SWAP_IF_LT(1, 0);
-#undef SWAP_IF_LT
-
-    Vertex3 middle_vl = *sorted_vs[1];
-    float fac = (sorted_vs[1]->point.y - sorted_vs[0]->point.y) / (sorted_vs[2]->point.y - sorted_vs[0]->point.y);
-    Vertex3 middle_vr{
-        {
-            sorted_vs[0]->point.x + fac * (sorted_vs[2]->point.x - sorted_vs[0]->point.x),
-            sorted_vs[1]->point.y,
-            sorted_vs[0]->point.z + fac * (sorted_vs[2]->point.z - sorted_vs[0]->point.z)
-        },
-        VertexData::lerp(sorted_vs[0]->data, sorted_vs[2]->data, fac)
-    };
-    if (middle_vr.point.x < middle_vl.point.x) {
-        Vertex3 temp = middle_vr;
-        middle_vr = middle_vl;
-        middle_vl = temp;
-    }
-
-    // top triangle
-    {
-        if (sorted_vs[0]->point.y != sorted_vs[1]->point.y) {
-            int top_y = static_cast<int>(std::floor(sorted_vs[0]->point.y + 1.f));
-            int bottom_y = static_cast<int>(std::ceil(sorted_vs[1]->point.y - 1.f));
-            for (int y = top_y; y <= bottom_y; y++) {
-                float iy = static_cast<float>(y);
-                float s = (iy - sorted_vs[0]->point.y) / (sorted_vs[1]->point.y - sorted_vs[0]->point.y);
-                float xl = sorted_vs[0]->point.x + s * (middle_vl.point.x - sorted_vs[0]->point.x);
-                float xr = sorted_vs[0]->point.x + s * (middle_vr.point.x - sorted_vs[0]->point.x);
-                int left_x = static_cast<int>(std::ceil(xl));
-                int right_x = static_cast<int>(std::ceil(xr - 1.f));
-                for (int x = left_x; x <= right_x; x++) {
-                    float ix = static_cast<float>(x);
-                    float t = (ix - xl) / (xr - xl);
-                    // depth and vd don't take into account perspective
-                    float depth = sorted_vs[0]->point.z + s * (middle_vl.point.z - sorted_vs[0]->point.z + t * (middle_vr.point.z - middle_vl.point.z));
-                    // VertexData vd = VertexData::bilerp(sorted_vs[0]->data, middle_vl.data, middle_vr.data, s, t);
-                    if (depth < depth_buf[x + y * w]) {
-                        depth_buf[x + y * w] = depth;
-                        pixels_vector[x + y * w] = face_color();
-                    }
-                }
-            }
-        }
-    }
-
-    // bottom triangle
-    {
-        if (sorted_vs[1]->point.y != sorted_vs[2]->point.y) {
-            int bottom_y = static_cast<int>(std::floor(sorted_vs[2]->point.y));
-            int top_y = static_cast<int>(std::ceil(sorted_vs[1]->point.y));
-            for (int y = top_y; y <= bottom_y; y++) {
-                float iy = static_cast<float>(y);
-                float s = (iy - sorted_vs[2]->point.y) / (sorted_vs[1]->point.y - sorted_vs[2]->point.y);
-                float xl = sorted_vs[2]->point.x + s * (middle_vl.point.x - sorted_vs[2]->point.x);
-                float xr = sorted_vs[2]->point.x + s * (middle_vr.point.x - sorted_vs[2]->point.x);
-                int left_x = static_cast<int>(std::ceil(xl));
-                int right_x = static_cast<int>(std::ceil(xr - 1.f));
-                for (int x = left_x; x <= right_x; x++) {
-                    float ix = static_cast<float>(x);
-                    float t = (ix - xl) / (xr - xl);
-                    // depth and vd don't take into account perspective
-                    float depth = sorted_vs[2]->point.z + s * (middle_vl.point.z - sorted_vs[2]->point.z + t * (middle_vr.point.z - middle_vl.point.z));
-                    // VertexData vd = VertexData::bilerp(sorted_vs[2]->data, middle_vl.data, middle_vr.data, s, t);
-                    if (depth < depth_buf[x + y * w]) {
-                        depth_buf[x + y * w] = depth;
-                        pixels_vector[x + y * w] = face_color();
-                    }
-                }
-            }
-        }
-    }
-}
-
-void PixelFrameBuffer::draw_triangle(TriangleVertex4 triangle) {
-    face_ind++;
-    for (auto t1 : triangle.crop_z_out(-1.f, 1.f)) {
-        for (auto t2 : t1.div_by_w().crop_xy_out(-1.f, 1.f, -1.f, 1.f)) {
-            MathVector2 pp1 = t2.vertex1.point.xy(),
-                        pp2 = t2.vertex2.point.xy(),
-                        pp3 = t2.vertex3.point.xy();
-            if ((pp2 - pp1).det(pp3 - pp1) >= 0.f) continue;
-            t2.vertex1.point = (t2.vertex1.point + MathVector3{1.f, 1.f, 0.f}) / 2.f;
-            t2.vertex2.point = (t2.vertex2.point + MathVector3{1.f, 1.f, 0.f}) / 2.f;
-            t2.vertex3.point = (t2.vertex3.point + MathVector3{1.f, 1.f, 0.f}) / 2.f;
-            float fw = static_cast<float>(w), fh = static_cast<float>(h);
-            t2.vertex1.point.x = t2.vertex1.point.x * fw - .5f;
-            t2.vertex1.point.y = t2.vertex1.point.y * fh - .5f;
-            t2.vertex2.point.x = t2.vertex2.point.x * fw - .5f;
-            t2.vertex2.point.y = t2.vertex2.point.y * fh - .5f;
-            t2.vertex3.point.x = t2.vertex3.point.x * fw - .5f;
-            t2.vertex3.point.y = t2.vertex3.point.y * fh - .5f;
-            _draw_cropped_triangle(t2);
-        }
-    }
-}
-
-uint32_t PixelFrameBuffer::face_color() const {
-    int n = face_ind / 2;
-    return ((n % 2 ? 0xFF000000 : 0x55000000) >> ((n % 6) / 2 * 8)) | 0xFF;
-}