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2 Commits

Author SHA1 Message Date
7ab3825598 feat: changed fov 2025-11-29 10:08:13 +01:00
efbde487cc feat: vertex colors 2025-11-29 10:07:59 +01:00
5 changed files with 29 additions and 12 deletions

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@@ -7,8 +7,10 @@
#include <vector>
struct model {
std::vector<vec3> verts;
// At 0 vertecie index, at 1 normal index
std::vector<std::tuple<uint16_t, uint16_t>> faces;
std::vector<vec3> normals;
std::vector<vec3> colors;
};
#endif

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@@ -37,11 +37,12 @@ for index,line in enumerate(content):
faces = content[startFaces:-1]
break
colors = ["vec3(" +",".join(vert.split(" ")[4:7]) + ")" for vert in verts]
verts = ["vec3(" +",".join(vert.split(" ")[1:4]) + ")" for vert in verts]
faces = [ ",".join(["{" + str(int((d.split("/")[0])) - 1) + "," + str(int((d.split("/")[2])) - 1) + "}" for d in face.split(" ")[1:4]]) for face in faces]
normals = ["vec3(" + ",".join(normal.split(" ")[1:4]) + ")" for normal in normals]
out = "#include \"model.hpp\" \n const model testModel({" + ",".join(verts) +"},{" + ",".join(faces) + "},{" + ",".join(normals) + "});"
out = "#include \"model.hpp\" \n const model testModel({" + ",".join(verts) +"},{" + ",".join(faces) + "},{" + ",".join(normals) + "},{"+ ",".join(colors)+"});"
with open("testModel.hpp", "w") as f:
f.write(out)

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@@ -11,6 +11,7 @@ struct polygon {
decimal bounding[4]; // min x, max x, min y, max y
vec3 normals[3];
vec3 colors[3];
polygon(const vec3 &v1, const vec3 &v2, const vec3 &v3)
: points{v1, v2, v3}, delta{} {}
@@ -84,6 +85,11 @@ struct polygon {
return result.normalize();
}
vec3 calcColor(vec3 barycentrics) {
return colors[0] * barycentrics[0] + colors[1] * barycentrics[1] +
colors[2] * barycentrics[2];
}
decimal calcDepth(vec3 barycentrics) {
return points[0].z() * barycentrics[0] +
points[1].z() * barycentrics[1] +

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@@ -20,9 +20,9 @@ class Renderer {
bool clearTarget = true;
void toScreenSpace(vec3 *p) {
p->x() = p->x() / p->z() * decimal(SCREEN_SPACE_SIZE) +
p->x() = p->x() / p->z() * decimal(2.0) * decimal(SCREEN_SPACE_SIZE) +
decimal(SCREEN_SPACE_SIZE);
p->y() = p->y() / p->z() * decimal(SCREEN_SPACE_SIZE) +
p->y() = p->y() / p->z() * decimal(2.0) * decimal(SCREEN_SPACE_SIZE) +
decimal(SCREEN_SPACE_SIZE);
p->z() = p->z();
}
@@ -58,16 +58,24 @@ class Renderer {
for (int f = 0; f < model->faces.size(); f += 3) {
for (int p = 0; p < 3; p++) {
testP.points[p] = verts[std::get<0>(model->faces[f + p])];
testP.colors[p] =
model->colors[std::get<0>(model->faces[f + p])];
testP.normals[p] =
model->normals[std::get<1>(model->faces[f + p])];
}
testP.calcDelta();
int startX = (testP.bounding[0] * invWidthScale).i >> SHIFT_AMOUNT;
int endX = (testP.bounding[1] * invWidthScale).i >> SHIFT_AMOUNT;
int startY = (testP.bounding[2] * invHeightScale).i >> SHIFT_AMOUNT;
int endY = (testP.bounding[3] * invHeightScale).i >> SHIFT_AMOUNT;
int startX = std::max(
(testP.bounding[0] * invWidthScale).i >> SHIFT_AMOUNT, 0);
int endX =
std::min((testP.bounding[1] * invWidthScale).i >> SHIFT_AMOUNT,
target->width - 1);
int startY = std::max(
(testP.bounding[2] * invHeightScale).i >> SHIFT_AMOUNT, 0);
int endY =
std::min((testP.bounding[3] * invHeightScale).i >> SHIFT_AMOUNT,
target->height - 1);
vec3 pos = vec3(testP.bounding[0], testP.bounding[2], 0.0);
for (int x = startX; x < endX; x++) {
@@ -78,17 +86,17 @@ class Renderer {
decimal depth = testP.calcDepth(factors);
if (depth < target->getDepth(x, y)) {
// std::cout << factors << std::endl;
vec3 normals = testP.calcNormal(factors);
vec3 normal = testP.calcNormal(factors);
vec3 color = testP.calcColor(factors);
decimal lightFac =
std::max(
normals *
normal *
(-vec3(1.0, -1.0, 1.0).normalize()),
decimal(0.0)) +
decimal(0.5);
target->setDepth(x, y, depth);
target->set(x, y,
(lightFac * vec3(1., 1., 1.)) *
decimal(120.0));
(color * decimal(120.0)) * lightFac);
// target->set(x, y,
// (normals + vec3(1.0, 1.0, 1.0)) *

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