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feat: c model loading

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This commit is contained in:
Amy Retzerau
2026-04-03 12:40:19 +02:00
parent 064fcc4068
commit 363849ee0c
7 changed files with 1235 additions and 61 deletions
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17
parseObj.py
View File

@@ -37,23 +37,32 @@ for index, line in enumerate(content):
faces = content[startFaces:-1]
break
colors = ["vec3(" + ",".join(vert.split(" ")[4:7]) + ")" for vert in verts]
colors = ["{" + ",".join(vert.split(" ")[4:7]) + "}" for vert in verts]
verts = ["{" + ",".join(vert.split(" ")[1:4]) + "}" for vert in verts]
faces = [
",".join([str(int((d.split("/")[0])) - 1) for d in face.split(" ")[1:4]])
",".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]
normals = ["{" + ",".join(normal.split(" ")[1:4]) + "}" for normal in normals]
out = (
'#include "../renderer.h" \n const model testModel = {(vec3[]){'
+ ",".join(verts)
+ "},(int[]){"
+ ",".join(faces)
+ "},(vec3[]){"
+ ",".join(normals)
+ "},(vec3[]){"
+ ",".join(colors)
+ "},"
+ str(len(verts))
+ ","
+ str(len(faces) * 3)
+ str(len(faces) * 6)
+ "};"
)

727
plane.obj Normal file
View File

@@ -0,0 +1,727 @@
# Blender 5.1.0
# www.blender.org
mtllib plane.mtl
o Cylinder.002
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vt 0.222222 0.500000
vt 0.166666 0.500000
vt 0.111111 0.500000
vt 0.055555 0.500000
vt -0.000000 0.500000
vt 0.957846 0.370000
vt 0.595731 0.066149
vt 0.542154 0.370000
vt -0.000000 0.750000
vt 0.388889 0.750000
vt 0.500000 0.750000
vt 0.611111 0.750000
vt 0.666667 0.750000
vt 0.722222 0.750000
vt 0.777778 0.750000
vt 0.833333 0.750000
vt 0.888889 0.750000
vt 1.000000 0.750000
vt 0.000000 0.000000
vt 0.944444 1.000000
vt 0.666667 1.000000
vt 0.555555 1.000000
vt 0.444444 1.000000
vt 0.222222 1.000000
vt -0.000000 1.000000
vt 0.666680 0.742476
vt 0.722236 0.742476
vt 0.833345 0.628449
vt 0.666678 0.628449
vt 0.666680 0.742476
vt 0.833345 0.628449
vt 0.876294 0.742476
vt 0.777789 0.628449
vt 0.667915 0.475526
vt 0.750000 0.490000
vt 0.832085 0.475526
vt 0.904269 0.433851
vt 0.986354 0.291676
vt 0.986354 0.208324
vt 0.957846 0.130000
vt 0.904269 0.066149
vt 0.832085 0.024474
vt 0.750000 0.010000
vt 0.667915 0.024474
vt 0.542154 0.130000
vt 0.513646 0.208324
vt 0.513646 0.291676
vt 0.595731 0.433851
s 1
usemtl Material.001
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f 126/113/126 125/56/125 127/55/127
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f 147/115/147 144/59/144 133/59/133
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f 145/57/145 125/56/125 134/64/134
f 146/114/146 132/114/132 136/58/136
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f 141/118/141 148/116/148 126/113/126
f 58/61/58 57/113/57 148/116/148
f 42/112/42 43/111/43 147/115/147
f 60/114/60 146/114/146 143/58/143
f 40/56/40 145/57/145 140/117/140
f 57/113/57 56/65/56 139/63/139
f 43/111/43 44/59/44 144/59/144
f 59/60/59 142/60/142 146/114/146
f 56/65/56 39/64/39 140/117/140
f 42/112/42 138/62/138 137/55/137
f 58/61/58 141/118/141 142/60/142
f 61/58/61 143/58/143 144/59/144
f 41/55/41 137/55/137 145/57/145

26
src/gameObjs.h Normal file
View File

@@ -0,0 +1,26 @@
#include "models/plane.h"
#include "renderer.h"
typedef struct {
mat4x4 transform;
vec3 velocity;
model model;
} gameObj;
gameObj rocket = {
{{1., 0., 0., 0.}, {0., 1., 0., 0.}, {0., 0., 1., 0.}, {0., -1., -10., 0.}},
{0.0, 0.0, 0.0},
testModel};
const gameObj *allGameObjs[] = {&rocket};
int vertBufferSize() {
int count = sizeof(allGameObjs) / sizeof(void *);
int result = 0;
for (int i = 0; i < count; i++) {
if (result < allGameObjs[i]->model.vert_size) {
result = allGameObjs[i]->model.vert_size;
}
}
return result * sizeof(vec4);
}

12
src/linmath.h
View File

@@ -19,6 +19,7 @@
#define REPEAT_4(FN) REPEAT_3(FN) FN(3)
#define add(i) r[i] = a[i] + b[i];
#define set(i) r[i] = v;
#define sub(i) r[i] = a[i] - b[i];
#define scale(i) r[i] = v[i] * s;
#define add_scale(i) r[i] = v[i] * s;
@@ -29,6 +30,9 @@
#define LINMATH_H_DEFINE_VEC(n) \
typedef float vec##n[n]; \
LINMATH_H_FUNC void vec##n##_set(vec##n r, float const v) { \
REPEAT_##n(set); \
} \
LINMATH_H_FUNC void vec##n##_add(vec##n r, vec##n const a, vec##n const b) { \
REPEAT_##n(add); \
} \
@@ -87,6 +91,7 @@ LINMATH_H_DEFINE_VEC(2)
LINMATH_H_DEFINE_VEC(3)
LINMATH_H_DEFINE_VEC(4)
#undef set
#undef add
#undef sub
#undef scale
@@ -124,6 +129,13 @@ LINMATH_H_FUNC void vec4_reflect(vec4 r, vec4 const v, vec4 const n) {
}
typedef vec4 mat4x4[4];
LINMATH_H_FUNC void mat4x4_getPos(vec3 r, mat4x4 const M) {
r[0] = M[3][0];
r[1] = M[3][1];
r[2] = M[3][2];
}
LINMATH_H_FUNC void mat4x4_identity(mat4x4 M) {
int i, j;
for (i = 0; i < 4; ++i)

31
src/main.c
View File

@@ -1,5 +1,5 @@
#include "gameObjs.h"
#include "linmath.h"
#include "models/plane.h"
#include "renderer.h"
#include <signal.h>
#include <stdint.h>
@@ -102,14 +102,7 @@ int main(void) {
render_target target = {WIDTH, HEIGHT, malloc(PIX_COUNT * 4)};
clearTarget(&target);
// model m;
// m = create_model((vec3[]){{-2.0f, -2.0f, -10.0f},
// {-2.0f, 2.0f, -10.0f},
// {2.0f, 2.0f, -10.0f},
// {2.0f, -2.0f, -10.0f}},
// (int[]){0, 2, 1, 0, 3, 2}, 4, 6);
// vec3_print(m.verts[0]);
vec4 *buffer = malloc(sizeof(vec4) * testModel.vert_size);
vec4 *buffer = malloc(vertBufferSize());
mat4x4 projMat = {};
mat4x4 viewMat = {};
mat4x4 drawMat = {};
@@ -126,12 +119,14 @@ int main(void) {
clock_t now = clock();
clock_t renderC;
float deltaTime; // in seconds
while (!stop) {
now = clock();
printf("total time: %fms\n",
((float)(now - start)) / (0.001 * CLOCKS_PER_SEC));
printf("render time: %fms\n", ((float)renderC) / (0.001 * CLOCKS_PER_SEC));
deltaTime = ((float)(now - start)) / CLOCKS_PER_SEC;
start = now;
printf("total time: %fms\n", deltaTime * 1000);
printf("render time: %fms\n", ((float)renderC) / (0.001 * CLOCKS_PER_SEC));
if (read(STDIN_FILENO, &lastKey, 1) == -1) {
perror("read failed");
@@ -141,7 +136,7 @@ int main(void) {
switch (lastKey) {
case 'w':
mat4x4_translate_in_place(viewMat, 0, 0, -0.2);
rocket.velocity[1] = (rocket.velocity[1] * 0.9 + 20 * 0.1);
break;
case 's':
mat4x4_translate_in_place(viewMat, 0, 0, 0.2);
@@ -156,11 +151,17 @@ int main(void) {
lastKey = 0;
rocket.velocity[1] +=
(-4.0f + 0.5 * powf(MIN(rocket.velocity[1], 0.0), 2.0f)) * deltaTime;
mat4x4_translate_in_place(rocket.transform, rocket.velocity[0] * deltaTime,
rocket.velocity[1] * deltaTime,
rocket.velocity[2] * deltaTime);
// mat4x4_translate_in_place(viewMat, 0, 0, .1);
mat4x4_mul(drawMat, projMat, viewMat);
mat4x4_mul(drawMat, projMat, rocket.transform);
clearTarget(&target);
renderC = clock();
render(&target, &testModel, &drawMat, buffer);
render(&target, &rocket.model, &drawMat, buffer);
renderC = clock() - renderC;
base64encode(&target, encodeBuff);

357
src/models/plane.h
View File

@@ -1,2 +1,355 @@
#include "../renderer.h"
const model testModel = {(vec3[]){{1.000000,1.000000,-11.000000},{1.000000,-1.000000,-11.000000},{1.000000,1.000000,-9.000000},{1.000000,-1.000000,-9.000000},{-1.000000,1.000000,-11.000000},{-1.000000,-1.000000,-11.000000},{-1.000000,1.000000,-9.000000},{-1.000000,-1.000000,-9.000000}},(int[]){4,2,0,2,7,3,6,5,7,1,7,5,0,3,1,4,1,5,4,6,2,2,6,7,6,4,5,1,3,7,0,2,3,4,0,1},8,36};
#include "../renderer.h"
const model testModel = {
(vec3[]){
{0.698513, 0.757563, 0.000000}, {0.044645, 2.825787, 0.000000},
{0.656388, 0.757563, 0.238906}, {0.041953, 2.825787, 0.015270},
{0.535092, 0.757563, 0.448996}, {0.034200, 2.825787, 0.028697},
{0.349257, 0.757563, 0.604930}, {0.022323, 2.825787, 0.038664},
{0.121296, 0.757563, 0.687901}, {0.007753, 2.825787, 0.043967},
{-0.121296, 0.757563, 0.687901}, {-0.007753, 2.825787, 0.043967},
{-0.349257, 0.757563, 0.604930}, {-0.022323, 2.825787, 0.038664},
{-0.535092, 0.757563, 0.448996}, {-0.034200, 2.825787, 0.028697},
{-0.656388, 0.757563, 0.238906}, {-0.041953, 2.825787, 0.015270},
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{-0.3656, 0.6821, -0.6333}, {-0.1270, 0.6821, -0.7201},
{0.1270, 0.6821, -0.7201}, {0.3656, 0.6821, -0.6333},
{0.5601, 0.6821, -0.4700}, {0.6871, 0.6821, -0.2501},
{0.9437, 0.3307, -0.0000}, {-0.4719, 0.3307, -0.8173},
{-0.4719, 0.3307, 0.8173}, {-0.0000, 1.0000, -0.0000},
{-0.4787, 0.5258, 0.7031}, {-0.7169, 0.4126, 0.5620},
{-0.1342, 0.4369, 0.8895}, {0.1342, 0.4369, 0.8895},
{0.4787, 0.5258, 0.7031}, {0.7169, 0.4126, 0.5620},
{0.7577, 0.1650, 0.6315}, {-0.7577, 0.1650, 0.6315},
{0.4534, 0.1969, 0.8693}, {0.1663, 0.2444, 0.9553},
{-0.1663, 0.2444, 0.9553}, {-0.4534, 0.1969, 0.8693},
{0.4906, 0.3661, 0.7907}, {0.3424, -0.0553, 0.9379},
{0.1431, 0.4003, 0.9051}, {0.1012, -0.0377, 0.9942},
{-0.1431, 0.4003, 0.9051}, {-0.1012, -0.0377, 0.9942},
{-0.4906, 0.3661, 0.7907}, {-0.3424, -0.0553, 0.9379},
{-0.7362, 0.2805, 0.6159}, {0.7362, 0.2805, 0.6159},
{0.6174, 0.1400, 0.7741}, {-0.6174, 0.1400, 0.7741},
{0.1165, 0.7887, 0.6037}, {-0.1165, 0.7887, 0.6037},
{0.7537, 0.0880, 0.6512}, {0.8090, 0.3734, 0.4541},
{0.1400, -0.2577, 0.9560}, {-0.1400, -0.2577, 0.9560},
{-0.7537, 0.0880, 0.6512}, {-0.8090, 0.3734, 0.4541},
{0.5043, 0.6625, 0.5539}, {-0.4814, -0.2028, 0.8527},
{-0.5043, 0.6625, 0.5539}, {0.4814, -0.2028, 0.8527}},
(vec3[]){{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.8556, 0.8746, 1.0000}, {0.8556, 0.8746, 1.0000},
{0.8556, 0.8746, 1.0000}, {0.8556, 0.8746, 1.0000},
{0.8556, 0.8746, 1.0000}, {0.8556, 0.8746, 1.0000},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.8556, 0.8746, 1.0000},
{0.8556, 0.8746, 1.0000}, {0.8556, 0.8746, 1.0000},
{0.8556, 0.8746, 1.0000}, {0.8556, 0.8746, 1.0000},
{0.8556, 0.8746, 1.0000}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.9696, 1.0000, 0.0000}, {0.9695, 0.9999, 0.0005},
{0.9696, 1.0000, 0.0000}, {0.9696, 1.0000, 0.0000},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.0000, 0.4470, 0.0334}, {0.0000, 0.4470, 0.0334},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900},
{0.1450, 0.1371, 0.1900}, {0.1450, 0.1371, 0.1900}},
148,
1752,
20.f};

126
src/renderer.h
View File

@@ -6,11 +6,12 @@
typedef struct {
vec3 *verts;
// vec3 *normals;
// vec3 *color;
int *index;
vec3 *normals;
vec3 *color;
int vert_size;
int index_size;
float shininess;
} model;
typedef struct {
@@ -34,6 +35,8 @@ typedef struct {
// vec3_print(verts[0]);
// return m;
// };
//
const vec3 lightDir = {0.707, 0.707, 0.0f};
void initPoly(polygon *p) {
vec4 **points = p->points;
@@ -88,11 +91,24 @@ void calcBarycentrics(polygon *p, vec2 s, vec3 r) {
r[0] = 1.f - r[1] - r[2];
}
float applyBary(const vec3 bary, float a, float b, float c) {
// float result = 0;
float fApplyBary(const vec3 bary, float a, float b, float c) {
return bary[0] * a + bary[1] * b + bary[2] * c;
}
void vApplyBary(const vec3 bary, const vec3 a, const vec3 b, const vec3 c,
vec3 dst) {
vec3 tmp = {};
dst[0] = 0;
dst[1] = 0;
dst[2] = 0;
vec3_scale(tmp, a, bary[0]);
vec3_add(dst, dst, tmp);
vec3_scale(tmp, b, bary[1]);
vec3_add(dst, dst, tmp);
vec3_scale(tmp, c, bary[2]);
vec3_add(dst, dst, tmp);
}
void render(render_target *target, const model *model, mat4x4 *matrix,
vec4 *buffer) {
@@ -107,66 +123,96 @@ void render(render_target *target, const model *model, mat4x4 *matrix,
mat4x4_mul_vec4(buffer[i], *matrix, tmp);
vec4_scale(buffer[i], buffer[i], 1.0 / buffer[i][3]);
vec4_print(buffer[i]);
// vec4_print(buffer[i]);
}
polygon p = {};
for (int i = 0; i < model->index_size; i += 3) {
vec3 *normals[3] = {};
vec3 *colors[3] = {};
for (int i = 0; i < model->index_size; i += 6) {
p.points[0] = buffer + model->index[i];
p.points[1] = buffer + model->index[i + 1];
p.points[2] = buffer + model->index[i + 2];
p.points[1] = buffer + model->index[i + 2];
p.points[2] = buffer + model->index[i + 4];
initPoly(&p);
if (p.norm[2] > 0)
continue;
printf("baryFac: %f\n", p.baryFactor);
normals[0] = model->normals + model->index[i + 1];
normals[1] = model->normals + model->index[i + 3];
normals[2] = model->normals + model->index[i + 5];
// printf("min x :%f, min y: %f\nmax x: %f, max y: %f \n", p.bounding[0],
// p.bounding[2], p.bounding[1], p.bounding[3]);
colors[0] = model->color + model->index[i];
colors[1] = model->color + model->index[i + 2];
colors[2] = model->color + model->index[i + 4];
// int startX = floor((MAX(-1.0f, p.bounding[0])+1.0)*target->width*0.5);
// int startY = floor((MAX(-1.0f, p.bounding[2])+1.0)*target->height*0.5);
//
// int endX = floor((MIN(1.0f, p.bounding[1])+1.0f)*target->width*0.5);
// int endY = floor((MAX(1.0f, p.bounding[3])+1.0f)*target->height*0.5);
float texWidth = 2.0f / target->width;
float texHight = 2.0f / target->width;
float startX = MAX(-1.0f, p.bounding[0]);
float startY = MAX(-1.0f, p.bounding[2]);
float endX = MIN(1.0f, p.bounding[1]);
float endY = MIN(1.0f, p.bounding[3]);
// float startX = MAX(-1.0f, p.bounding[0]);
// float startY = MAX(-1.0f, p.bounding[2]);
// float endX = MIN(1.0f, p.bounding[1]);
// float endY = MIN(1.0f, p.bounding[3]);
float startX = (MAX(-1.0f, p.bounding[0]) + 1.0f) * 0.5f * target->width;
float endY = (-MAX(-1.0f, p.bounding[2]) + 1.0f) * 0.5f * target->height;
float endX = (MIN(1.0f, p.bounding[1]) + 1.0f) * 0.5f * target->width;
float startY = (-MIN(1.0f, p.bounding[3]) + 1.0f) * 0.5f * target->height;
// printf("min x :%f, min y: %f\n max x: %f, max y: %f \n", startX, startY,
// endX, endY);
//
vec2 sp = {};
vec3 bary = {};
vec4 val = {0};
vec3 nor = {};
vec3 color = {};
for (float y = startY; y < endY; y += texHight) {
for (float x = startX; x < endX; x += texWidth) {
sp[0] = x;
sp[1] = y;
vec3 viewDir = {};
vec3 halfWay = {};
for (int y = startY; y < endY; y += 1) {
for (int x = startX; x < endX; x += 1) {
// for (float y = startY; y < endY; y += texHight) {
// for (float x = startX; x < endX; x += texWidth) {
float fX = ((float)x) * texWidth - 1.0f;
float fY = 1.0f - ((float)y) * texHight;
sp[0] = fX;
sp[1] = fY;
calcBarycentrics(&p, sp, bary);
if (bary[0] >= 0.0f && bary[1] >= 0.0f && bary[2] >= 0.0f) {
uint8_t depth = (uint8_t)(255.0 * applyBary(bary, (*p.points[0])[2],
(*p.points[1])[2],
(*p.points[2])[2]));
int pX = (int)((x + 1.f) * target->width * 0.5f);
int pY = (int)((-y + 1.f) * target->height * 0.5f);
if (depth < getDepth(target, pX, pY)) {
vec3_dup(val, bary);
// val[0] = ((float)depth) / 255.0f;
// val[1] = ((float)depth) / 255.0f;
// val[2] = ((float)depth) / 255.0f;
val[3] = ((float)depth) / 255.0f;
uint8_t depth = (uint8_t)(255.0 * fApplyBary(bary, (*p.points[0])[2],
(*p.points[1])[2],
(*p.points[2])[2]));
// if (depth < getDepth(target, x, y)) {
vApplyBary(bary, (*normals[0]), (*normals[1]), (*normals[2]), nor);
vApplyBary(bary, (*colors[0]), (*colors[1]), (*colors[2]), color);
set(target, pX, pY, val);
}
viewDir[0] = fX;
viewDir[1] = -fY;
viewDir[2] = 2.144663;
vec3_norm(viewDir, viewDir);
vec3_add(halfWay, viewDir, lightDir);
vec3_norm(halfWay, halfWay);
vec3_dup(val, color);
float diffuse = MAX(vec3_dot(nor, lightDir), 0.0f);
// float l = powf(MAX(vec3_dot(halfWay, nor), 0.0), 2.0);
float spec = powf(MAX(vec3_dot(halfWay, nor), 0.0), model->shininess);
spec *= (model->shininess + 8.0) / 25.1327;
// val[0] = nor[0] * 0.5 + 0.5;
// val[1] = nor[1] * 0.5 + 0.5;
// val[2] = nor[2] * 0.5 + 0.5;
// val[0] = ((float)depth) / 255.0f;
// val[1] = ((float)depth) / 255.0f;
// val[2] = ((float)depth) / 255.0f;
vec3_scale(val, val, diffuse * 0.5 + spec + 0.5);
// vec3_set(val, l);
val[3] = ((float)depth) / 255.0f;
set(target, x, y, val);
// }
}
}
}