diff options
Diffstat (limited to 'source/Render.cpp')
| -rw-r--r-- | source/Render.cpp | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/source/Render.cpp b/source/Render.cpp deleted file mode 100644 index 7aabc43..0000000 --- a/source/Render.cpp +++ /dev/null @@ -1,98 +0,0 @@ -#include <limits>
-
-#include "Render.h"
-
-Render::Render(int width_, int height_) : Bitmap(width_, height_)
-{
- zBuffer = new float[width * height];
- for (int i = 0; i < width * height; i++)
- zBuffer[i] = std::numeric_limits<float>::infinity();
-}
-
-float Render::edgeFun(const Vertice& A, const Vertice& B, const Vertice& P)
-{
- return ((P.x - A.x)*(B.y - A.y) - (P.y - A.y)*(B.x - A.x));
-}
-
-void Render::drawTriangle(Vertice t1, Vertice t2, Vertice t3, Bitmap& texture)
-{
- int maxx = fmax(t1.x, fmax(t2.x, t3.x));
- int minx = fmin(t1.x, fmin(t2.x, t3.x));
- int maxy = fmax(t1.y, fmax(t2.y, t3.y));
- int miny = fmin(t1.y, fmin(t2.y, t3.y));
-
- Vertice p((float)minx + 0.5f, (float)miny + 0.5f, 0.0f, 0.0f, 0.0f, 0.0f);
-
- int surface = edgeFun(t1, t2, t3);
- int w1_row = edgeFun(t2, t3, p); int w1xk = (t3.y - t2.y), w1yk = -(t3.x - t2.x);
- int w2_row = edgeFun(t3, t1, p); int w2xk = (t1.y - t3.y), w2yk = -(t1.x - t3.x);
- int w3_row = edgeFun(t1, t2, p); int w3xk = (t2.y - t1.y), w3yk = -(t2.x - t1.x);
-
- for (int y = miny; y < maxy; y++) {
- int w1_vertice = w1_row;
- int w2_vertice = w2_row;
- int w3_vertice = w3_row;
- for (int x = minx; x < maxx; x++) {
-
- float w1 = w1_vertice;
- float w2 = w2_vertice;
- float w3 = w3_vertice;
-
- if ((w3 >= 0 && w1 >= 0 && w2 >= 0) || (w3 <= 0 && w1 <= 0 && w2 <= 0))
- {
- w1 /= surface;
- w2 /= surface;
- w3 /= surface;
-
- float w = 1.0f / (w1 * t1.w + w2 * t2.w + w3 * t3.w);
- float z =/* w * */1.0f / ((w1 * t1.z + w2 * t2.z + w3 * t3.z) * w);
- if (zBuffer[(y * (width)) + x] > z) {
- zBuffer[(y * (width)) + x] = z;
- float u = w * (w1 * t1.u + w2 * t2.u + w3 * t3.u);
- float v = w * (w1 * t1.v + w2 * t2.v + w3 * t3.v);
-
- u = round((u * texture.width));
- v = round((v * (texture.height - 1)));
-
- int hlp = ((v * texture.width) + u) * 4;
- int r = texture.pixels[hlp + 0];
- int g = texture.pixels[hlp + 1];
- int b = texture.pixels[hlp + 2];
- setPixel(x, y, r, g, b);
- }
- }
-
- w1_vertice += w1xk;
- w2_vertice += w2xk;
- w3_vertice += w3xk;
- }
-
- w1_row += w1yk;
- w2_row += w2yk;
- w3_row += w3yk;
- }
-}
-
-
-void Render::renderModel(ObjModel& model, Bitmap& texture)
-{
- for (int i = 0; i < model.faces.size(); i++) {
-
- model.vertices[model.faces[i].p[0][0] - 1].u = model.uvcoo[model.faces[i].p[0][1] - 1].u * model.vertices[model.faces[i].p[0][0] - 1].w;
- model.vertices[model.faces[i].p[0][0] - 1].v = model.uvcoo[model.faces[i].p[0][1] - 1].v * model.vertices[model.faces[i].p[0][0] - 1].w;
-
- model.vertices[model.faces[i].p[1][0] - 1].u = model.uvcoo[model.faces[i].p[1][1] - 1].u * model.vertices[model.faces[i].p[1][0] - 1].w;
- model.vertices[model.faces[i].p[1][0] - 1].v = model.uvcoo[model.faces[i].p[1][1] - 1].v * model.vertices[model.faces[i].p[1][0] - 1].w;
-
- model.vertices[model.faces[i].p[2][0] - 1].u = model.uvcoo[model.faces[i].p[2][1] - 1].u * model.vertices[model.faces[i].p[2][0] - 1].w;
- model.vertices[model.faces[i].p[2][0] - 1].v = model.uvcoo[model.faces[i].p[2][1] - 1].v * model.vertices[model.faces[i].p[2][0] - 1].w;
-
-
- drawTriangle(model.vertices[model.faces[i].p[0][0] - 1], model.vertices[model.faces[i].p[1][0] - 1], model.vertices[model.faces[i].p[2][0] - 1], texture);
- }
-}
-
-void Render::resetZBuf() {
- for (int i = 0; i < width * height; i++)
- zBuffer[i] = std::numeric_limits<float>::infinity();
-}
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