67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
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#ifndef RENDERER_H
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#define RENDERER_H
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#include "fastmath.hpp"
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#include "model.hpp"
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#include "polygon.hpp"
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#include "rendertarget.hpp"
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#include <memory.h>
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class Renderer {
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public:
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Rendertarget *target;
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bool clearTarget = true;
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Renderer() : clearTarget(false) {}
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void toScreenSpace(polygon *p) {
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for (int i = 0; i < 3; i++) {
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p->points[i].x() =
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p->points[i].x() / p->points[i].z() * decimal(8.0) +
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decimal(8.0);
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p->points[i].y() =
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p->points[i].y() / p->points[i].z() * decimal(8.0) +
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decimal(8.0);
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p->points[i].z() = decimal(1.0);
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}
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}
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void render(const model *model) {
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decimal widthScale = decimal(16.0) / decimal((float)target->width);
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decimal heightScale = decimal(16.0) / decimal((float)target->height);
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// std::cout << widthScale << std::endl;
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if (clearTarget) {
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memset((wchar_t *)target->pixels, 0,
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target->height * target->width * sizeof(target[0]));
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}
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polygon testP;
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for (int f = 0; f < model->faces.size(); f += 3) {
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for (int p = 0; p < 3; p++) {
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testP.points[p] = model->verts[model->faces[f + p]];
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}
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toScreenSpace(&testP);
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testP.calcDelta();
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vec3 pos = vec3();
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for (int x = 0; x < target->height; x++) {
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for (int y = 0; y < target->height; y++) {
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if (testP.contains(pos)) {
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target->set(x, y, vec3(0.0, 255.0, 0.0));
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}
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pos.y() += heightScale;
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}
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pos.y() = decimal(0);
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pos.x() += widthScale;
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}
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}
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}
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};
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#endif
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